Journal articles on the topic 'Clear orthodontic aligner'
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Gold, Binu Punnoose, Suvetha Siva, Sangeetha Duraisamy, Azmina Idaayath, and Ravi Kannan. "Properties of Orthodontic Clear Aligner Materials - A Review." Journal of Evolution of Medical and Dental Sciences 10, no. 37 (September 13, 2021): 3288–94. http://dx.doi.org/10.14260/jemds/2021/668.
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BACKGROUND Clear aligners are orthodontic devices that are transparent, a plastic used to correct malaligned teeth. Here patient wears a series of customized clear, removable aligners that gradually move the teeth to the desired position. The clear aligner system is a modern adaptation of the systems described since the middle of the 20th century, therefore there were different devices and philosophies that have led to its creation and the system has evolved a lot over the decades. Clear aligner therapy has been a part of the orthodontic practice for years, but, popularity was increased since the introduction of Invisalign appliances (Align Technology) in 1998. There are almost 27 different clear aligner products currently on offer for orthodontic treatment. Nowadays, more people prefer clear aligner treatment because it is aesthetically superior to brackets and lingual orthodontics. The superiority of clear aligners lies in their aesthetics. The optical properties of the clear aligner material play a major role in aesthetics. The rising demand among adult patients for “invisible” orthodontic treatment has led to an exponential growth in the clear aligner market. Indeed, these aligners have a low aesthetic impact, as well as being able to effectively and progressively guide the teeth into their programmed positions. They are also removable and therefore do not hamper oral hygiene maintenance, in turn reducing the risk of white spots, caries, gingivitis and periodontal disease. All the materials do not possess the same chemical composition. The properties change before and after wear. In this article, we bring out the different materials used for the manufacture of clear aligners and their various properties. KEY WORDS Clear Aligners, Optical Properties, Thermoplastic Material, Mechanical Properties
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Shetty, Sanjana, and Naazia Shaikh. "Clear aligner therepy – A review." Journal of Dental Specialities 9, no. 2 (December 15, 2021): 46–52. http://dx.doi.org/10.18231/j.jds.2021.013.
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Aesthetics is a major factor in Orthodontic treatment and it is a primary concern among patients seeking orthodontic treatment. To meet the growing aesthetic desire for an alternative to traditional braces, researchers have created a variety of alternatives, including ceramic or composite braces, lingual orthodontics, and transparent aligners. Clear aligner therapy is a treatment that consists of a set of clear dental appliances that are custom-made to fit the contour of a patient's teeth. Clear Aligners are an alternative to traditional braces that are used to guide teeth into appropriate alignment. Clear aligners, like braces, utilise a progressive force to regulate tooth movement, but without the need of metal wires or brackets.
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Shetty, Sharath Kumar, Cecilia Wilson, Mahesh Kumar Y, and Vijayananda K. Madhur. "Orthodontic Treatment with Clear Aligners." Scholars Journal of Dental Sciences 8, no. 7 (August 13, 2021): 230–33. http://dx.doi.org/10.36347/sjds.2021.v08i07.008.
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The paradigm shift in orthodontics arrived with the introduction of Aligner System. It allows both dental practitioner and patient to develop a visual understanding of orthodontic tooth movement. The esthetic and practical advantages of the system have extended orthodontic services to a greater population. The transparency of the clear aligners enhances its esthetic appeal for those adult patients who are averse to wearing conventional labial fixed orthodontic appliances. Although guidelines about the types of malocclusions that this technique can treat exist, few clinical studies have assessed the effectiveness of the appliance.
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Налбандян, М. С., Г. Ю. Тер-Погосян, and Э. Р. Казарян. "ПЕРСПЕКТИВЫ ПРИМЕНЕНИЯ ЭЛАЙНЕРОВ В СОВРЕМЕННОЙ ОРТОДОНТИИ." MEDICINE, SCIENCE AND EDUCATION, no. 33 (May 2022): 122–24. http://dx.doi.org/10.56936/18291775-2022.33-122.
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The clear aligner treatment in the last years has been increasing its relevance and use. The use of aligners to treat malocclusion has had a remarkable surge in the last decades, a growing interest has been reported for such methods of invisible orthodontics, especially among adult patients. Clear aligners are orthodontic devices that use elastic thermoplastic material, applying pressure to the teeth to move into the aligner’s position, being an alternative to dental braces. They are esthetic, efficient, and comfortable compared to a traditional fixed appliance for mild-to-moderate malocclusion. A clinician should know strengths and weaknesses of aligners for a correct use, being guided by clinical indications. The present paper will highlight the increasing popularity of clear aligner appliances, as well as the clinical scope and the limitations of aligner therapy in general.
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Shah, Manan Jignesh, Ajay Kantilal Kubavat, Khyati Viral Patel, and Nikunj Harikrishna Prajapati. "Fabrication of in-house aligner- A review." Journal of Contemporary Orthodontics 6, no. 3 (September 15, 2022): 120–24. http://dx.doi.org/10.18231/j.jco.2022.022.
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As the demand for aesthetic treatments is increasing, more people are seeking alternatives to fixed orthodontic appliances. Clear aligners are aesthetically pleasing and comfortable option for orthodontic treatment and have gained immense popularity over the last decade. Moreover, with increasing demand there has been a constant attempt for cost reductions by number of aligner companies and laboratories. It will be beneficial not only to orthodontist but also to patients if aligners can be fabricated in-house itself. Thus, this review will highlight the fabrication of In-house aligners in detail.
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Wheeler, Timothy T. "Orthodontic clear aligner treatment." Seminars in Orthodontics 23, no. 1 (March 2017): 83–89. http://dx.doi.org/10.1053/j.sodo.2016.10.009.
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Drake, Carl T., Susan P. McGorray, Calogero Dolce, Madhu Nair, and Timothy T. Wheeler. "Orthodontic Tooth Movement with Clear Aligners." ISRN Dentistry 2012 (August 14, 2012): 1–7. http://dx.doi.org/10.5402/2012/657973.
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Clear aligners provide a convenient model to measure orthodontic tooth movement (OTM). We examined the role of in vivo aligner material fatigue and subject-specific factors in tooth movement. Fifteen subjects seeking orthodontic treatment at the University of Florida were enrolled. Results were compared with data previously collected from 37 subjects enrolled in a similar protocol. Subjects were followed prospectively for eight weeks. An upper central incisor was programmed to move 0.5 mm. every two weeks using clear aligners. A duplicate aligner was provided for the second week of each cycle. Weekly polyvinyl siloxane (PVS) impressions were taken, and digital models were fabricated to measure OTM. Initial and final cone beam computed tomography (CBCT) images were obtained to characterize OTM. Results were compared to data from a similar protocol, where subjects received a new aligner biweekly. No significant difference was found in the amount of OTM between the two groups, with mean total OTM of 1.11 mm. (standard deviation (SD) 0.30) and 1.07 mm. (SD 0.33) for the weekly aligner and biweekly control groups, respectively (P=0.72). Over eight weeks, in two-week intervals, material fatigue does not play a significant role in the rate or amount of tooth movement.
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Moon, Chiho, George K. Sándor, Edward Chengchuan Ko, and Yong-Deok Kim. "Postoperative Stability of Patients Undergoing Orthognathic Surgery with Orthodontic Treatment Using Clear Aligners: A Preliminary Study." Applied Sciences 11, no. 23 (November 25, 2021): 11216. http://dx.doi.org/10.3390/app112311216.
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Backgrond: Until now, there have been many studies on the postoperative stability of orthognathic patients treated with traditional fixed orthodontic appliances. Recently, the use of clear aligners as orthodontic appliances has increased in orthodontic treatment for aesthetic and patient convenience. The aim of this preliminary study was to investigate the stability and characteristics of patients undergoing orthognathic surgery using clear aligners. Patients and Methods: This study was performed on patients who underwent orthognathic surgery by one surgeon at Pusan National University Dental Hospital from April 2017 to August 2021. A comparative study was conducted on five patients treated with clear aligners during orthodontic treatment and ten patients treated with traditional fixed appliances as a control group. Postoperative skeletal changes and recurrence were evaluated by cone beam computed tomography and lateral cephalometric radiographs taken two days postoperatively and six months postoperatively. Several measurement variables were used to confirm the presence or absence of recurrence, preoperative and postoperative orthodontic treatment period, and the number of extracted teeth. Results: Postoperative stability for six months after surgery was not significantly different between the clear aligner group and the traditional fixed appliance group. The preoperative orthodontic treatment period was also shorter in the clear aligner group, and the number of extracted premolar teeth and impacted teeth were also fewer in the clear aligner group, but there was no significant difference. Conclusions: Orthodontic treatment using clear aligners continues to develop, and it is believed that there is no limit to what can be accomplished during orthodontic surgery accompanied by clear aligners.
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Yaosen, Chen, A. M. Mohamed, Wang Jinbo, Zheng Ziwei, Maher Al-balaa, and Yang Yan. "Risk Factors of Composite Attachment Loss in Orthodontic Patients during Orthodontic Clear Aligner Therapy: A Prospective Study." BioMed Research International 2021 (January 23, 2021): 1–6. http://dx.doi.org/10.1155/2021/6620377.
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Background. The composite attachment loss during orthodontic clear aligner therapy is an adverse event that commonly happens in our daily practice. However, there is a lack of related statistical analysis and studies analyzing the related risk factors. Therefore, the aim of this study is to assess the incidence of attachment loss during orthodontic clear aligner therapy and to identify rick factors that may predict such event. Materials and Methods. The demographics and clinical variables of 94 patients undergoing clear aligner therapy (27 males and 67 females; average age: 27.60 ± 0.86 years ) were recorded. Both patient-related and tooth-related attachment loss was recorded. The chi-squared test and logistic regressive analysis were applied to identify the potential risk factors. SPSS for Mac (version 23.0, IBM, USA) was used for statistical analyses. P < 0.05 was considered statistically significant. Results. Our study suggested that the risk factors for attachment loss include frequent aligner removal (≥ 5 times a day) ( losing rate = 60.0 % , P = 0.005 ), aligner wear time less than 18 hours a day ( losing rate = 50.8 % , P = 0.014 ), eating without aligners inserted ( losing rate = 47.9 % , P = 0.034 ), utilizing aligner tray seaters ( losing rate = 48.2 % , P = 0.006 ), and unilateral mastication ( losing rate = 52.1 % , P = 0.002 ). The multivariable logistic regression analysis indicates that aligner wear time less than 18 hours a day ( P = 0.020 , B = 0.925 ), using aligner tray seaters ( P = 0.007 , B = 1.168 ), and unilateral mastication ( P = 0.034 , B = − 0.458 ) were considered independent factors that can predict the composite attachment loss in orthodontic clear aligner therapy. Conclusion. Wearing aligner less than 18 hours a day, using aligner tray seaters, and unilateral mastication may contribute to increased incidence of composite attachment loss during orthodontic clear aligner therapy.
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Saypeeva, M. M., E. V. Brusnitsyna, E. S. Bimbas, I. V. Gavrilov, T. V. Zakirov, and V. A. Trubina. "Orthodontic treatment with clear aligners and enamel remineralization in adolescents." Pediatric dentistry and dental profilaxis 21, no. 2 (July 17, 2021): 95–102. http://dx.doi.org/10.33925/1683-3031-2021-21-2-95-102.
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Relevance. The effectiveness of the new remineralizing agent PRESIDENT®PROFI REM "MINERALS GEL" was assessed at different stages of clear aligner orthodontic treatment in adolescents with reduced enamel resistance.Materials and methods. PRESIDENT®PROFI REM "MINERALS GEL" was evaluated in a one-month open, single center, non-comparative study where 20 adolescents took part (mean age 14.9 ± 1.1 years).Results. OHI-S decreased by 24.75%, PMA and ERT reduced by 44.33% and 17.11% respectively, after one month of the orthodontic treatment with clear aligners and simultaneous use of the remineralizing gel. The pH in the mixed saliva increased from 6.97 ± 0.16 to 7.69 ± 0.11, calcium went up by 48.5%, and the total antioxidant activity decreased by 29.36% (according to the mixed saliva biochemical parameters). The OHIP-14 questionnaire revealed that the quality of life decreased in 75% of adolescent patients during the orthodontic treatment with aligners due to "communication problems". The quality of life was significantly higher during the aligner treatment with simultaneous remineralizing therapy than during the conventional treatment with fixed appliances (4.25 ± 0.86 points in the aligner group versus 7.05 ± 1.16 points – the brackets group).Conclusions. The remineralizing gel PRESIDENT®PROFI REM "MINERALS GEL" has an anti-plaque and mineralizing effect. The quality of life is significantly higher during the clear aligner treatment with simultaneous remineralizing therapy than during the conventional treatment with fixed appliances.
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Bichu, Yashodhan M., Abdulraheem Alwafi, Xiaomo Liu, James Andrews, Björn Ludwig, Aditi Y. Bichu, and Bingshuang Zou. "Advances in orthodontic clear aligner materials." Bioactive Materials 22 (April 2023): 384–403. http://dx.doi.org/10.1016/j.bioactmat.2022.10.006.
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Mampieri, Gianluca, Roberta Condò, Giovanni Di Caccamo, Paola Pirelli, and Aldo Giancotti. "Clear Aligner Treatments in Orthoperio Patients." Case Reports in Dentistry 2022 (February 14, 2022): 1–17. http://dx.doi.org/10.1155/2022/8932770.
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Introduction. Orthodontic treatment is a recognized approach to support specific periodontal issues thanks to its capability to manipulate periodontal tissues. This concept is certainly not new, but the use of aligners in certain clinical conditions can be considered as being innovative when a multidisciplinary treatment is necessary. Moreover, aligners enable to plan 3D tooth movements, root placement, staging, and range of dental movements, alongside the improvement of oral hygiene. Thus, aligners can be suitable for the treatment of periodontal issues. In this article, the authors present two clinical cases with different periodontal issues: one with superficial periodontal problems and the other with a deep one. Both cases were successfully treated with aligners, highlighting how this invisible and comfortable tool can simplify the management of complex adult treatments. Conclusion. Digital workflow is the key for success in the aligner technique. The possibility to design a virtual plan of treatment and to transfer it in the real clinical world represents a way to limit errors and to reduce the time of orthodontic therapy.
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Seo, Jeong-Hee, Emmanuel Eghan-Acquah, Min-Seok Kim, Jeong-Hyeon Lee, Yong-Hoon Jeong, Tae-Gon Jung, Mihee Hong, Won-Hyeon Kim, Bongju Kim, and Sung-Jae Lee. "Comparative Analysis of Stress in the Periodontal Ligament and Center of Rotation in the Tooth after Orthodontic Treatment Depending on Clear Aligner Thickness—Finite Element Analysis Study." Materials 14, no. 2 (January 9, 2021): 324. http://dx.doi.org/10.3390/ma14020324.
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Lately, in orthodontic treatments, the use of transparent aligners for the correction of malocclusions has become prominent owing to their intrinsic advantages such as esthetics, comfort, and minimal maintenance. Attempts at improving upon this technology by varying various parameters to investigate the effects on treatments have been carried out by several researchers. Here, we aimed to investigate the biomechanical and clinical effects of aligner thickness on stress distributions in the periodontal ligament and changes in the tooth’s center of rotation. Dental finite element models comprising the cortical and cancellous bones, gingiva, teeth, and nonlinear viscoelastic periodontal ligaments were constructed, validated, and used together with aligner finite element models of different aligner thicknesses to achieve the goal of this study. The finite element analyses were conducted to simulate the actual orthodontic aligner treatment process for the correction of malocclusions by generating pre-stresses in the aligner and allowing the aligner stresses to relax to induce tooth movement. The results of the analyses showed that orthodontic treatment in lingual inclination and axial rotation with a 0.75 mm-thick aligner resulted in 6% and 0.03% higher principal stresses in the periodontal ligament than the same treatment using a 0.05 mm-thick aligner, respectively. Again, for both aligner thicknesses, the tooth’s center of rotation moved lingually and towards the root direction in lingual inclination, and diagonally from the long axis of the tooth in axial rotation. Taken together, orthodontic treatment for simple malocclusions using transparent aligners of different thicknesses will produce a similar effect on the principal stresses in the periodontal ligament and similar changes in the tooth’s center of rotation, as well as sufficient tooth movement. These findings provide orthodontists and researchers clinical and biomechanical evidence about the effect of transparent aligner thickness selection and its effect on orthodontic treatment.
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Seo, Jeong-Hee, Emmanuel Eghan-Acquah, Min-Seok Kim, Jeong-Hyeon Lee, Yong-Hoon Jeong, Tae-Gon Jung, Mihee Hong, Won-Hyeon Kim, Bongju Kim, and Sung-Jae Lee. "Comparative Analysis of Stress in the Periodontal Ligament and Center of Rotation in the Tooth after Orthodontic Treatment Depending on Clear Aligner Thickness—Finite Element Analysis Study." Materials 14, no. 2 (January 9, 2021): 324. http://dx.doi.org/10.3390/ma14020324.
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Lately, in orthodontic treatments, the use of transparent aligners for the correction of malocclusions has become prominent owing to their intrinsic advantages such as esthetics, comfort, and minimal maintenance. Attempts at improving upon this technology by varying various parameters to investigate the effects on treatments have been carried out by several researchers. Here, we aimed to investigate the biomechanical and clinical effects of aligner thickness on stress distributions in the periodontal ligament and changes in the tooth’s center of rotation. Dental finite element models comprising the cortical and cancellous bones, gingiva, teeth, and nonlinear viscoelastic periodontal ligaments were constructed, validated, and used together with aligner finite element models of different aligner thicknesses to achieve the goal of this study. The finite element analyses were conducted to simulate the actual orthodontic aligner treatment process for the correction of malocclusions by generating pre-stresses in the aligner and allowing the aligner stresses to relax to induce tooth movement. The results of the analyses showed that orthodontic treatment in lingual inclination and axial rotation with a 0.75 mm-thick aligner resulted in 6% and 0.03% higher principal stresses in the periodontal ligament than the same treatment using a 0.05 mm-thick aligner, respectively. Again, for both aligner thicknesses, the tooth’s center of rotation moved lingually and towards the root direction in lingual inclination, and diagonally from the long axis of the tooth in axial rotation. Taken together, orthodontic treatment for simple malocclusions using transparent aligners of different thicknesses will produce a similar effect on the principal stresses in the periodontal ligament and similar changes in the tooth’s center of rotation, as well as sufficient tooth movement. These findings provide orthodontists and researchers clinical and biomechanical evidence about the effect of transparent aligner thickness selection and its effect on orthodontic treatment.
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Abay, Feridun, S. Kutalmış Buyuk, and Yasemin Nur Korkmaz. "Prevalence of white spot lesions during clear aligner therapy: a systematic review." Australasian Orthodontic Journal 38, no. 2 (January 1, 2022): 368–79. http://dx.doi.org/10.2478/aoj-2022-0035.
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Abstract Objectives: To determine if an association exists between the prevalence of white spot lesions (WSLs) and orthodontic treatment using clear aligners. Methods: Electronic databases were searched with no restrictions on year. Article selection criteria included human clear aligner studies conducted during the permanent dentition and with a full description of the applied technique and oral hygiene status. Results: The search strategy resulted in a total of 4177 articles. After title and abstract screening, 156 relevant articles were identified from which five remained after the application of the exclusion criteria. The articles were mostly classified as having a low risk of bias. Conclusions: Clear aligner therapy induces a lower development rate of new WSLs than orthodontic treatment by fixed appliances. In patients who have poor oral hygiene and/or existing WSLs, clear aligner treatment could be recommended.
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Tartaglia, Gianluca M., Andrea Mapelli, Cinzia Maspero, Tommaso Santaniello, Marco Serafin, Marco Farronato, and Alberto Caprioglio. "Direct 3D Printing of Clear Orthodontic Aligners: Current State and Future Possibilities." Materials 14, no. 7 (April 5, 2021): 1799. http://dx.doi.org/10.3390/ma14071799.
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The recent introduction of three-dimensional (3D) printing is revolutionizing dentistry and is even being applied to orthodontic treatment of malocclusion. Clear, personalized, removable aligners are a suitable alternative to conventional orthodontic appliances, offering a more comfortable and efficient solution for patients. Including improved oral hygiene and aesthetics during treatment. Contemporarily, clear aligners are produced by a thermoforming process using various types of thermoplastic materials. The thermoforming procedure alters the properties of the material, and the intraoral environment further modifies the properties of a clear aligner, affecting overall performance of the material. Direct 3D printing offers the creation of highly precise clear aligners with soft edges, digitally designed and identically reproduced for an entire set of treatment aligners; offering a better fit, higher efficacy, and reproducibility. Despite the known benefits of 3D printing and the popularity of its dental applications, very limited technical and clinical data are available in the literature about directly printed clear aligners. The present article discusses the advantages of 3D printed aligners in comparison to thermoformed ones, describes the current state of the art, including a discussion of the possible road blocks that exist such as a current lack of approved and marketed materials and limited existence of aligner specific software. The present review suggests the suitability of 3D direct printed aligners is superior to that of thermoformed manufactured aligners because of the prior’s increased accuracy, load resistance, and lower deformation. It is an overall more stable way to produce an aligner where submillimeter movements can make a difference in treatment outcome. Direct 3D printing represents a complex method to control the thickness of the aligner and therefore has a better ability to control the force vectors that are used to produce tooth movement. There is currently no other approved material on the market that can do this. The conclusion of this article is that we encourage further in vitro and in vivo studies to test these new technologies and materials.
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Kafle, Dashrath, Ravi Kumar Mahato, Abhisek Giri, Sanjiv Luintel, and Arjun Karki. "Treatment of generalized spacing with clear aligner therapy: Report of a case." Orthodontic Journal of Nepal 11, no. 2 (December 31, 2021): 67–71. http://dx.doi.org/10.3126/ojn.v11i2.43281.
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Clear Aligners are becoming popular among patients in recent years because of its invisible nature , comfort to wear, less orthodontic emergencies and better hygiene control. However proper case selection is vital for the success. With the better understanding of aligner biomechanics and improvement in aligner materials and attachment design, more complex teeth movement is also possible with clear aligners. As there is always controversy on whether aligners cause tipping or bodily tooth movement, In this case report, a skeletal class I patient with generalized spacing in maxilla and mandible is presented which is treated effectively by bodily movement of incisors.
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Borda, Alissa F., Judah S. Garfinkle, David A. Covell, Mansen Wang, Larry Doyle, and Christine M. Sedgley. "Outcome assessment of orthodontic clear aligner vs fixed appliance treatment in a teenage population with mild malocclusions." Angle Orthodontist 90, no. 4 (April 28, 2020): 485–90. http://dx.doi.org/10.2319/122919-844.1.
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ABSTRACT Objective To assess the efficacy and efficiency of treatment in adolescents presenting with mild malocclusions, comparing outcomes using clear aligners to fixed appliances. Materials and Methods Patients identified retrospectively and consecutively from one private practice had been treated with either clear aligners (Invisalign, Align Technology, Santa Clara, Calif) or fixed appliances (0.022 Damon, Ormco, Orange, Calif; n = 26/group). Assessments of occlusion were made using the American Board of Orthodontics Discrepancy Index (DI) for initial records and Cast-Radiograph Evaluation (CRE) for final records. Number of appointments, number of emergency visits, and overall treatment time were determined from chart reviews. Data were analyzed using Pearson's correlation, Wilcoxon rank tests, unpaired t-tests, and Chi-square tests, with significance set to P ≤ .05. Results Pretreatment, the aligner and fixed groups showed no significant difference in overall severity (DI: 11.9 ± 5.3 vs 11.6 ± 4.8) or in any individual DI category. Posttreatment scores showed finishes for the aligner group had fewer discrepancies from ideal relative to the fixed appliance group (CRE: 30.1 ± 8.3 vs 37.0 ± 9.3; P < .01). Patients treated with aligners had fewer appointments (13.7 ± 4.4 vs 19.3 ± 3.6; P < .0001), fewer emergency visits (0.8 ± 1.0 vs 3.6 ± 2.5; P < .0001), and shorter overall treatment time (16.9 ± 5.7 vs 23.4 ± 4.4 months; P < .0001). Conclusions Outcomes for treatment of mild malocclusions in adolescents showed equivalent effectiveness of clear aligners compared to fixed appliances, with significantly improved results for clear aligner treatment in terms of tooth alignment, occlusal relations, and overjet. Assessment of the number of appointments, number of emergency visits, and overall treatment time showed better outcomes for treatment with clear aligners.
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Caruso, Silvia, Atanaz Darvizeh, Stefano Zema, Roberto Gatto, and Alessandro Nota. "Management of a Facilitated Aesthetic Orthodontic Treatment with Clear Aligners and Minimally Invasive Corticotomy." Dentistry Journal 8, no. 1 (February 15, 2020): 19. http://dx.doi.org/10.3390/dj8010019.
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Accelerating orthodontic tooth movement has become a topical issue and the corticotomy seems to be the only effective and safe technique reported in the literature. Simultaneously, aesthetic orthodontic treatment with removable clear aligners has become commonly requested. The aim of this paper is to illustrate the management of facilitated aesthetic orthodontic treatment, a combined approach including piezocision corticotomy and clear aligners for orthodontic treatment. Orthodontic planning for traditional clear aligners should be modified to take advantage of the corticotomy technique in order to facilitate the most difficult orthodontic movements needed to achieve treatment completion, where each aligner will be used for four days rather than 15 days for a total time of four months. A corticotomy with a modified minimally invasive flapless piezocision technique should be performed in both jaws at the same time, before the time window of the orthodontic treatment, where the most difficult orthodontic movements are planned. Treatment planning where difficult orthodontic movements, such as anterior open-bite closure and extraction space closure, are easily managed with clear aligners and are presented as examples of facilitated aesthetic orthodontic treatment application. The combination between aesthetic treatment with clear aligners and modified piezocision corticotomy, if carefully planned, seems to represent a synergy that achieves the current goals of orthodontic treatment. The primary objectives of this combination should be facilitating difficult orthodontic movements and reducing treatment duration.
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Tao, Tianjin, Hengyan Liang, Xinyu Yan, Qi Fan, Qingsong Jiang, Fan Jian, Hu Long, and Wenli Lai. "Comparison of Root Parallelism in Extraction Cases Treated with Clear Aligners vs. Fixed Appliances." Applied Sciences 12, no. 22 (November 18, 2022): 11756. http://dx.doi.org/10.3390/app122211756.
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In the process of orthodontic treatment, root parallelism is related to the relapse of extraction spaces, black triangles, and periodontal health. However, there are few studies on root parallelism in extraction cases with different types of appliances. The objective was to compare the root parallelism in extraction cases treated with clear aligners vs. those treated with fixed appliances by measuring the differences per extraction site and to access the root-movement control capacity of both orthodontic appliances. A retrospective study was conducted on cases in which the first premolars were extracted, treated by clear aligner appliance (“Invisalign” system, 28 patients) or fixed appliance (30 patients). The angulations of the tooth axis (canines, the second premolars, the first molars, and the second molars) were measured to analyze and compare the difference in root parallelism between the two orthodontic appliances. The percentage of root parallelism between the canine and second premolar in both groups had no significant difference. However, judging from the average angle difference value, the fixed appliance might have a greater range in root angulation adjustment than the aligner. In the angulation categories, the aligner mainly showed root apical divergence, while the fixed appliance mainly showed root apical convergence. The dental crown of the molars was mainly non-tipping in both groups, but it could be observed that the dental crown of the maxillary molars had a tendency toward mesial inclination. In conclusion, the same root parallelism and root inclination were obtained in tooth extraction cases whether treated by clear aligners or fixed appliances. This study provides clinicians with more information on the performance of clear aligners and fixed appliances.
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Cortona, Andrea, Gabriele Rossini, Simone Parrini, Andrea Deregibus, and Tommaso Castroflorio. "Clear aligner orthodontic therapy of rotated mandibular round-shaped teeth: A finite element study." Angle Orthodontist 90, no. 2 (August 30, 2019): 247–54. http://dx.doi.org/10.2319/020719-86.1.
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ABSTRACT Objective: To evaluate, using the finite element method, the orthodontic rotational movement of a lower second premolar obtained with clear aligners, analyzing different staging and attachment configurations. Materials and Methods: A CAD model including a complete lower dental arch (with element 4.5 mesially rotated 30°) and the corresponding periodontal ligaments, attachments, and aligner was designed and imported to finite element software. Starting from the CAD model, six projects were created to simulate the following therapeutic combinations for correcting element 4.5 position: (1) without attachments, (2) single attachment placed on the buccal surface of element 4.5, (3) three attachments placed on the buccal surfaces of teeth 4.4 to 4.6. For each project, both 1.2° and 3° of aligner activation were considered. Results: All the analyzed configurations revealed a clockwise rotation movement of element 4.5 on the horizontal plane. Models with attachments showed a greater tooth displacement pattern than models without attachments. Simulations with attachments and 3° of aligner activation exhibited the best performance concerning tooth movement but registered high stresses in the periodontal ligaments, far from the ideal stress levels able to produce tooth rotational movement. Conclusions: The model with a single attachment and 1.2° of aligner activation was the most efficient, followed by the three attachment model with the same degree of activation. Aligner activation should not exceed 1.2° to achieve better control of movement and reasonable stress in periodontal structures.
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Cooper-Kazaz, Rena, Inbal Ivgi, Laura Canetti, Eytan Bachar, Boaz Tsur, Stella Chaushu, and Miriam Shalish. "The impact of personality on adult patients' adjustability to orthodontic appliances." Angle Orthodontist 83, no. 1 (May 11, 2012): 76–82. http://dx.doi.org/10.2319/010312-6.1.
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Abstract Objective: To evaluate the impact of psychological traits on patients' choice of orthodontic appliances and their adjustability to orthodontic treatment. Materials and Methods: The sample consisted of 68 adult patients divided into three groups (28 buccal, 19 lingual, and 21 clear aligners). Prior to treatment participants filled out the Brief Symptom Inventory to assess symptoms of mental distress and the Narcissistic Vulnerability Scale to assess narcissistic personality traits. During the first week after appliance delivery and on day 14, patients completed a Health-Related Quality of Life questionnaire to assess their perception of pain and four areas of dysfunction. The correlation between personality traits and patients' reaction to treatment was evaluated. Results: Somatization was the only trait that affected the choice of lingual and clear aligner appliance. Reduced self-esteem regulation was associated with increased pain in all patients, while exploitation was associated with pain in lingual patients. Narcissistic vulnerability slightly influenced patients' adaptability to orthodontic appliances. Although adjustability to lingual appliances was the most difficult, only two parameters were affected by personality features. In the buccal group, adjustability was affected by numerous parameters. Adaptation to the clear aligner appliance was relatively uneventful and least affected by psychological features. Conclusion: Anxious individuals tend to prefer lingual and clear aligner appliances. The selection of lingual and clear aligner appliances governs the patient's response and recovery process, leaving little room for the effect of psychological features. On the other hand, the buccal appliance allows for greater impact of personality traits on adjustability.
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Nemec, Michael, Hans Magnus Bartholomaeus, Christian Wehner, Christian Behm, Hassan Ali Shokoohi-Tabrizi, Xiaohui Rausch-Fan, Oleh Andrukhov, and Erwin Jonke. "Behavior of Primary Human Oral Keratinocytes Grown on Invisalign® SmartTrack® Material." Applied Sciences 11, no. 6 (March 22, 2021): 2826. http://dx.doi.org/10.3390/app11062826.
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Orthodontic clear aligner treatment is gaining tremendous popularity. The world market leader is Align Technology® and its product Invisalign®. Although numerous patients are treated with Invisalign® aligners, only little is known about the cellular effects of aligner material on oral epithelial cells. In the present study, we aimed to investigate the effects of SmartTrack® clear aligner material on directly cultured primary human oral keratinocytes (HOKs). Cell morphology and behavior were investigated by scanning electron microscopy and bright field microscopy. Aligner effects on viability were detected by cell-counting-kit (CCK)-8 and live/dead staining. Gene expression of several inflammatory and barrier proteins was assessed by qPCR. Cells cultured on tissue culture plastic served as control. Cell proliferation/viability was significantly lower in cells cultured on aligner material (p < 0.05) in comparison to control. Live/dead staining did not reveal an increase in the number of dead cells on aligner surfaces. After two and seven days of incubation, interleukin (IL)-6 expression decreased, and IL-8 expression increased in HOKs cultured on aligner surfaces. The expression of intercellular adhesion molecule 1 (ICAM-1) significantly decreased after seven days. Gene expression of epithelial barrier markers showed that integrin (ITG)-α6 significantly decreased after two and seven days. A significant decrease in ITG-β4 and E-cadherin expression levels compared to control could only be seen after seven days. We did not find any cytotoxic effect, but alterations in the cell’s barrier functions and inflammatory reaction were obvious. Clinical studies are required to give further insights into clinical reactions on the underlying aligner material of this quickly expanding orthodontic appliance.
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Sawan, Nozha M. "Clear Aligners in Patients with Amelogenesis and Dentinogenesis Imperfecta." International Journal of Dentistry 2021 (December 23, 2021): 1–8. http://dx.doi.org/10.1155/2021/7343094.
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Dentinogenesis imperfecta (DI) and amelogenesis imperfecta (AI) are hereditary abnormalities of dental hard tissues. Dental abnormalities may also be accompanied by symptoms of disorders such as osteogenesis imperfecta. AI and DI have a significant burden on socializing, function, and comfort; therefore, frequent screening and accurate diagnosis is the cornerstone of managing such conditions. Both AI and DI could be treated with many strategies, including restorative, prosthetic, periodontal, surgical, and orthodontics treatment. The interdisciplinary combination of orthodontic, prosthodontic, and periodontic treatment has been proven to improve the prognosis of AI and DI. Regarding orthodontic treatment, the most difficult element of orthodontic therapy may be maintaining a high level of motivation for what might be a prolonged form of treatment spanning several years. There are many forms of orthodontic management for AI and DI, including removable appliances, functional appliances, and fixed appliances. Clear aligner therapy (CAT) contains a broad range of equipment that works in different ways, has different construction processes, and is compatible with different malocclusion procedures. The application of CAT in patients with AI and DI is favorable over the fixed applicants. However, the available evidence regarding the application of CAT in AI is weak and heterogeneous. In this review, we discussed the current evidence regarding the application of clear CAT in patients with AI and DI.
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Grünheid, Thorsten, Sara Gaalaas, Hani Hamdan, and Brent E. Larson. "Effect of clear aligner therapy on the buccolingual inclination of mandibular canines and the intercanine distance." Angle Orthodontist 86, no. 1 (May 22, 2015): 10–16. http://dx.doi.org/10.2319/012615-59.1.
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ABSTRACT Objective: To compare the changes in buccolinugal inclination of mandibular canines and intercanine distance in patients treated with clear aligners to those treated with preadjusted edgewise appliances. Materials and Methods: The buccolingual inclination of mandibular canines and the intercanine distance were measured on pre- and posttreatment cone-beam computed tomograms of 30 patients who had been treated with clear aligners and 30 patients who had been treated with fixed preadjusted edgewise appliances. Differences between the aligner and fixed appliance groups and between pre- and posttreatment measurements were tested for statistical significance. Results: In both groups, most of the mandibular canines had positive buccolingual inclinations (ie, their crowns were positioned lateral to their roots) both before and after treatment. While there was no difference between the groups pretreatment, the posttreatment buccolingual inclination was significantly greater in the aligner group. In the fixed appliance group, the canines became more upright with treatment, while the buccolingual inclination did not change significantly in the clear aligner group. The intercanine distance did not differ between the groups either before or after treatment. However, it increased significantly over the course of treatment in the aligner group, whereas it did not change significantly in the fixed appliance group. Conclusions: Orthodontic treatment with clear aligners tends to increase the mandibular intercanine distance with little change in inclination in contrast to treatment with fixed appliances, which leaves the intercanine distance unchanged but leads to more upright mandibular canines.
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Shipley, Thomas. "Effects of High Frequency Acceleration Device on Aligner Treatment—A Pilot Study." Dentistry Journal 6, no. 3 (July 12, 2018): 32. http://dx.doi.org/10.3390/dj6030032.
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Evaluation of the effect of a high frequency acceleration device (HFA) on clear aligner exchange intervals and treatment time required to achieve prescribed tooth movements. Sixteen subjects with similar Class I malocclusions, ≤5 mm crowding, and treated with aligner orthodontic therapy (Invisalign) were divided into two groups. Group 1 (experimental; n = 8) underwent aligner treatment in conjunction with daily use of the HFA device and exchanged aligners every five days. Group 2 (controls; n = 8) underwent aligner treatment without use of the device and exchanged aligners every 14 days according to the manufacturer’s recommended interval. All subjects were treated by one investigator, and results—total number of aligners used, and number of refinements required—were evaluated by both prior to final mobile retention (Vivera) scan. A significant decrease in both treatment time and number of aligners required to complete treatment was observed by HFA subjects vs. controls. In addition, no refinements were required by HFA subjects, whereas six of eight control subjects required one or more refinements. The results of the present preliminary report showed that the use of the HFA device in conjunction with aligner orthodontic treatment resulted in a significant decrease in the length of treatment. Moreover, the number of patients requiring refining treatment was significantly lower.
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Pariyatdulapak, Natnicha, Pornkiat Churnjitapirom, Toemsak Srikhirin, and Nita Viwattanatipa. "Bond strength of orthodontic buttons on clear aligner materials." Orthodontic Waves 80, no. 4 (October 2, 2021): 224–31. http://dx.doi.org/10.1080/13440241.2021.1972243.
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Nguyen, Minh Truong, Tien Thuy Vu, and Quang Ngoc Nguyen. "Advanced Digital 3D Technology in the Combined Surgery-First Orthognathic and Clear Aligner Orthodontic Therapy for Dentofacial Deformity Treatment." Processes 9, no. 9 (September 8, 2021): 1609. http://dx.doi.org/10.3390/pr9091609.
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Orthognathic surgery and orthodontic treatment are required for patients with dentofacial deformities to obtain an ideal facial esthetic with good functioning. Recently, characterized by the surgery-first approach, an integrated orthodontic–surgical treatment has been introduced as an emerging solution to dentofacial deformity treatment. The surgery-first approach is regarded to have less treatment time and quicker enhancement of a facial profile than the conventional orthodontic–surgical treatment. Moreover, the recent advances in computing and imaging have allowed the adoption of 3-dimensional (3D) virtual planning protocols in orthognathic surgery as well as digital orthodontic treatment, which enables a paradigm shift when realizing virtual planning properly. These techniques then allow the surgeon and orthodontist to collaborate, plan, and simulate the dentofacial deformity treatment before performing the whole procedure. Along this line, in this research article, we present an integrated treatment method for the realization of an effective deformity treatment. Specifically, we implemented the integrated 3D technique by combining it with the surgery-first orthognathic approach (SFOA) as a novel treatment method for the patients. The outcomes from the combined treatments of the patients with dentofacial deformity, in practice, have demonstrated that our proposed 3D technique in orthognathics and orthodontics using clear aligner therapy (e.g., Invisalign) can enhance the satisfactory level of the patient since the start of treatment then improve their quality of life. As a result, the combined techniques realize the novel integrated treatment method using 3D technology with the use of 3D imaging and modeling as a promising development trend of dentistry, which fits into the context of Dentistry 4.0 as a key enabler to the concept of sustainable dentistry development.
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Meto, Aida, Bruna Colombari, Anna Castagnoli, Mario Sarti, Lucia Denti, and Elisabetta Blasi. "Efficacy of a Copper–Calcium–Hydroxide Solution in Reducing Microbial Plaque on Orthodontic Clear Aligners: A Case Report." European Journal of Dentistry 13, no. 03 (July 2019): 478–84. http://dx.doi.org/10.1055/s-0039-1695653.
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AbstractThe aim of this study was to investigate the ability of a copper–calcium–hydroxide-based compound to remove microbial plaque naturally produced onto orthodontic clear aligners. A commercially available dental paste, named Cupral, based on copper–calcium–hydroxide, was used. A healthy volunteer (female, 32 years old), undergoing orthodontic treatment with thermoplastic clear aligners was enrolled. By conventional/confocal microscopy and colony-forming unit (CFU) assay, 2-week used aligners were examined for microbial plaque, prior and following exposure to Cupral. Confocal microscopy revealed abundant plaque irregularly distributed onto the aligner surface. Following Cupral treatment, a drastic decrease occurred in plaque thickness and matrix presence. As assessed by the CFU assay, total microbial load approached 109 CFUs/aligner, with slight differences in aerobiosis and anaerobiosis culture conditions; six macroscopically different types of colonies were detected and identified by matrix-assisted laser desorption ionization-time of flight mass spectrometry. Following Cupral treatment, microbial load dropped to undetectable levels, irrespectively of the conditions considered. Exposure of clear aligners to Cupral results in the elimination of contaminating microorganisms; the antimicrobial activity is retained up to 1.25% concentration. Overall, our data describe a novel use of Cupral, a copper–calcium–hydroxide-based compound, in daily hygiene practices with promising results.
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Khan, Mahamad Irfanulla, Laxmikanth SM, Tarika Gopal, and Praveen Kumar Neela. "Artificial intelligence and 3D printing technology in orthodontics: future and scope." AIMS Biophysics 9, no. 3 (2022): 182–97. http://dx.doi.org/10.3934/biophy.2022016.
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<abstract> <p>New digital technologies, like in other fields, have revolutionized the health care field and orthodontic practice in the 21<sup>st</sup> century. They can assist the health care professionals in working more efficiently by saving time and improving patient care. Recent advances in artificial intelligence (AI) and 3D printing technology are useful for improving diagnosis and treatment planning, creating algorithms and manufacturing customized orthodontic appliances. AI accomplishes the task of human beings with the help of machines and technology. In orthodontics, AI-based models have been used for diagnosis, treatment planning, clinical decision-making and prognosis prediction. It minimizes the required workforce and speeds up the diagnosis and treatment procedure. In addition, the 3D printing technology is used to fabricate study models, clear aligner models, surgical guides for inserting mini-implants, clear aligners, lingual appliances, wires components for removable appliances and occlusal splints. This paper is a review of the future and scope of AI and 3D printing technology in orthodontics.</p> </abstract>
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Guo, Runzhi, Yunfei Zheng, Hao Liu, Xiaobei Li, Lingfei Jia, and Weiran Li. "Profiling of subgingival plaque biofilm microbiota in female adult patients with clear aligners: a three-month prospective study." PeerJ 6 (January 2, 2018): e4207. http://dx.doi.org/10.7717/peerj.4207.
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Background Clear aligners are well known for facilitating oral hygiene maintenance and decreasing susceptibility to periodontal diseases as compared to conventional fixed appliances. However, few research studies focus on the subgingival microbial community during clear aligner treatment (CAT). Hence, this study investigates changes of the subgingival microbial community and its association with clinical characteristics during the first three months of CAT. Methods Ten female patients with clear aligners were enrolled in this study. Subgingival plaque samples were obtained at three time points: before orthodontic treatment (T0), one month after orthodontic treatment (T1) and three months after orthodontic treatment (T2). DNA was then extracted from plaque samples and analyzed by 16S rRNA gene sequencing. Periodontal examinations, including plaque index (PI) and gingival bleeding index (GBI) measurements were also recorded. Results The plaque indices (PIs) and gingival bleeding indices (GBIs) were slightly increased at T1 and T2, but no statistically significant difference was found. The alpha diversity indices, including the ACE, Chao1, Shannon indices, all showed a declining trend without significance, and a rising trend in the Simpson diversity index was observed. The weighted UniFrac distance was significantly higher at T1 and T2 compared with T0. Principal Coordinates Analysis (PCoA) demonstrated that the communities at T0 tended to cluster apart from the communities at T1 and T2. The relative abundance of the phylum Firmicutes and genus Mycoplasma was significantly increased at T0 compared with T2. There was no significant difference in the relative abundance of periodontal pathogens at the genus and species levels or core microorganisms at the genus level. Conclusion A slightly decreasing microbial diversity with a significant change of microbial structure was found during the first three-month clear aligner treatment (CAT). However, subjects receiving clear aligner treatment were free from periodontal diseases with relatively stable levels of periodontal microorganisms and core microorganisms. Thus, our preliminary findings indicated that clear aligners induced nonpathogenic changes of the subgingival microbiome in the first three-month treatment.
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Ustdal, Gokay, and Ayca Ustdal Guney. "YouTube as a source of information about orthodontic clear aligners." Angle Orthodontist 90, no. 3 (February 11, 2020): 419–24. http://dx.doi.org/10.2319/072419-491.1.
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ABSTRACT Objectives To evaluate the content, reliability, and quality of videos about orthodontic clear aligners on YouTube. Materials and Methods Researchers used the Google Trends website to determine that the most frequently used search term for orthodontic clear aligners on the Internet was: “Invisalign.” A search was then conducted on YouTube using the key word “Invisalign.” From the first 140 results, 100 videos were selected for analysis. A 13-point content score was used to classify poor-content and rich-content videos, and the global quality scale (GQS) was used to examine quality of the videos. To evaluate reliability of the information, a five-question scale was used. The Mann-Whitney U-test, χ2 test, and Pearson correlation coefficients were used for statistical evaluations. Results Of the YouTube videos, 33 were classified as rich content and 67 as poor content. Most videos (73%) were uploaded by laypeople, and most uploaders (71%) were women. The most commonly discussed content was instructions (65%), followed by procedure (57%) and pain (52%). Regarding the GQS, most of the videos were evaluated as moderate quality (51%). Compared with the poor-content video group, the rich-content video group had a significantly higher GQS score (P = .004). There was no significant difference between the poor-content and rich-content groups regarding information reliability (P > .05). Conclusions Video content on YouTube relating to aligner orthodontics was generally insufficient. The quality of videos was moderate, but the reliability of information was generally poor. Specialists should refer patients to reliable sources of information.
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Akram, Sana, Muhammad Zeeshan, Mariyam Masood, Daud Anthoney, Nadia Irshad, and Mahrukh Anwar. "The Impact of Orthodontic fixed appliance and clear plastic aligner in periodontal health; A comparative clinical study." Pakistan Journal of Medical and Health Sciences 16, no. 4 (April 26, 2022): 305–7. http://dx.doi.org/10.53350/pjmhs22164305.
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Objective: To find out the periodontal health of patients with fixed orthodontic and clear aligner treatment with a follow-up of three months supportive periodontal therapy. Study Setting: After receiving approval from the hospital's ethical committee the study was conducted at Department of Dentistry Faryal Dental College, Sheikhupura from September 2021 to February 2022. Material and Methods: For this study 40 individuals were selected and divided them into 2 different groups regarding age and mode of treatment. In Group E, 20 individuals were of age in between 15-30 years and they used multi-bracket fixed therapy while in Group F, 20 individuals of age in between 15- 30 years were used treatment with clear aligners. Results: Results of current study were significant (P < 0.05) regarding logistic regression model of descriptive statistics of dependent variables measured for periodontal therapy after 3 month follow-up respectively. Percentage standard mean deviation (Mean±SD) levels of recovery rate, patient compliance, probing depth, plaque index, bleeding on probing and gingival recession for fixed appliance brackets and clear aligners were (56.21± 11.11, 31.14± 11.11, 13.04± 10.01, 26.10± 3.10, 15.21± 10.12, 01.12± 13.11),( 59.22± 1.01, 43.11± 01.10, 14.01± 11.21, 22.10± 3.10, 6.11± 10.11, 06.12± 14.11) noted respectively. Conclusion: The results of current study were significant (P < 0.05) regarding logistic regression model of descriptive statistics of dependent variables measured for periodontal therapy after 3 month follow-up respectively. Patient compliance with clear aligner treatment was higher than fixed appliance brackets. Key words: Fixed orthodontic appliance, clear aligner, periodontal diseases
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Harippriya Karthikeyan, Remmiya Mary Varghese, and Visalakshi Ramanathan. "Patients Preference to Clear Aligner Therapy Over Conventional Orthodontic Therapy." International Journal of Research in Pharmaceutical Sciences 11, SPL3 (December 28, 2020): 1990–96. http://dx.doi.org/10.26452/ijrps.v11ispl3.3718.
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Malocclusion is defined as irregularity of the teeth or a mal-relationship of the dental arches beyond the range of what is accepted as normal occlusion. Maloccluded teeth can cause psychological problems that are related to impaired dentofacial esthetics. Malocclusion may also cause serious problems related to oral health. This is a multifactorial defect caused by factors such as environment, lifestyle, health, genetics, socio-economic status etc. Clear aligners are orthodontic therapeutic options which are preferred for the correction of maloccluded teeth. The main aim of the study was to find out the awareness of the patients towards the preference of clear aligners as orthodontic treatment options. A University based setting was conducted. A sample size of hundred patients was taken for the survey. The survey was done by distributing an online questionnaire through Google forms consisting of 11 questions and circulated among the participants. The participants comprise both male and female patients. To eliminate bias, a randomized sampling method was used. The data was collected over a period of one week. All the 11 questions of the survey were close ended questions. Chi square test was applied to find the association between the parameters and the level of significance. This study shows the patients have a moderate understanding of clear aligners and their acceptance of it as an orthodontic treatment option.
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Khashashneh, Majd, Jithendra Ratnayake, Joanne Jung Eun Choi, Li Mei, Karl Lyons, and Paul A. Brunton. "The Effectiveness of Dental Bleaching during Orthodontic Treatment with Clear Aligners: A Systematic Review." Applied Sciences 12, no. 21 (November 7, 2022): 11274. http://dx.doi.org/10.3390/app122111274.
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The objective of this article was to systematically review the literature to determine how effective tooth whitening procedures are when carried out in tandem with orthodontic clear aligners. This systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Online searches of PubMed, Medline via Ovid, Science Direct, the Cochrane database of systematic reviews via Ovid, Scopus, and Google Scholar as well as manual searches of the references of the selected articles were conducted. Clinical studies which assessed the efficacy of dental bleaching using orthodontic clear aligners were included in the present study. Data from the included studies were extracted and assessed for risk of bias using the Cochrane risk of bias tool. Three studies met the inclusion and exclusion criteria and were included in this study. One study compared the efficiency of tooth bleaching between clear aligners and conventional bleaching trays. One study evaluated the effectiveness of dental bleaching using clear aligners by comparing the tooth shade of those patients to a control group of patients who did not receive dental bleaching during orthodontic clear aligner treatment. One study evaluated the effectiveness of different concentrations of different bleaching agents using clear aligners. All the included studies showed an improved tooth shade when using clear aligners as bleaching trays.
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Ciavarella, Domenico, Claudia Cianci, Michele Laurenziello, Giuseppe Troiano, Francesco De Cillis, Michele Tepedino, Graziano Montaruli, Vincenzo Grassia, Lorenzo Lo Muzio, and Carmine Pappalettere. "Comparison of the Stress Strain Capacity between Different Clear Aligners." Open Dentistry Journal 13, no. 1 (January 31, 2019): 41–47. http://dx.doi.org/10.2174/1874210601913010041.
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Background: The rife use of aesthetic appliance in orthodontic treatment requires the study of the properties of the materials they are made of. Objective: The aim of the present study was to evaluate the dimensional stability of clear aligners made of three different materials after the application of in-vivo dynamic stress and in-vitro static stress. Methods: Three different aligners made of different materials (PET-G; PET; SmartTrack®), prepared on the dental arch of the same patient, were tested. For each material, three aligner samples were manufactured: one to be used in-vivo, one to be tested in-vitro, and one to be used as a control. To evaluate the effects of the dynamic stress produced in-vivo, each aligner was worn by a single patient 22 hours per day, followed by a wash-out period of two weeks. To evaluate the effects of static stress, each aligner was exposed to the in-vitro continuous force of 50N. The tested and control aligners were scanned, then linear measurements were taken to evaluate their dimensional stability after different types of stresses. Results: PET seems to have the lowest percentage of deformation; PET-G and SmartTrack® showed a reduced deformation going from the posterior to the anterior area. The contact with human saliva induces a greater deformation. Conclusion: Different materials show different behavior following application of static stresses and dynamic stresses in the oral cavity. PET showed the highest dimensional stability.
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Fountoulaki, Georgia, and Andrej Thurzo. "Change in the Constricted Airway in Patients after Clear Aligner Treatment: A Retrospective Study." Diagnostics 12, no. 9 (September 11, 2022): 2201. http://dx.doi.org/10.3390/diagnostics12092201.
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This retrospective study evaluated changes in the pharyngeal portion of the upper airway in patients with constricted and normal airways treated with clear aligners (Invisalign, Align). Additionally, we assessed the change of tongue position in the oral cavity from a lateral view. Evaluation was performed with specialized software (Invivo 6.0, Anatomage) on pretreatment and post-treatment pairs of cone beam computed tomography imaging (CBCT) data. The level of airway constriction, volume, cross-section minimal area and tongue profile were evaluated. Patients with malocclusion, with pair or initial and finishing CBCT and without significant weight change between the scans, treated with Invisalign clear aligners were distributed into two groups. Group A consisted of fifty-five patients with orthodontic malocclusion and constricted upper airway. Control group B consisted of thirty-one patients with orthodontic malocclusions without any airway constriction. In the group with airway constriction there was a statistically significant increase in volume during therapy (p < 0.001). The surface of the most constricted cross-section of the airway did not change significantly after treatment in any of the groups. The final tongue position was different from the initial position in 62.2% of all clear aligner treatments. The position of the smallest clearance of the airway in the pharynx was similar for both groups localized at the level of 2nd cervical vertebra.
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Hong, Kyungjae, Won-Hyeon Kim, Emmanuel Eghan-Acquah, Jong-Ho Lee, Bu-Kyu Lee, and Bongju Kim. "Efficient Design of a Clear Aligner Attachment to Induce Bodily Tooth Movement in Orthodontic Treatment Using Finite Element Analysis." Materials 14, no. 17 (August 30, 2021): 4926. http://dx.doi.org/10.3390/ma14174926.
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Clear aligner technology has become the preferred choice of orthodontic treatment for malocclusions for most adult patients due to their esthetic appeal and comfortability. However, limitations exist for aligner technology, such as corrections involving complex force systems. Composite attachments on the tooth surface are intended to enable active control of tooth movements. However, unintended tooth movements still occur. In this study, we present an effective attachment design of an attachment that can efficiently induce tooth movement by comparing and analyzing the movement and rotation of teeth between a general attachment and an overhanging attachment. The 3D finite element modes were constructed from CBCT data and used to analyze the distal displacement of the central incisor using 0.5- and 0.75-mm-thick aligners without an attachment, and with general and overhanging attachments. The results show that the aligner with the overhanging attachment can effectively reduce crown tipping and prevent axial rotation for an intended distal displacement of the central incisor. In all models, an aligner with or without attachments was not capable of preventing the lingual inclination of the tooth.
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Johal, Ama, and Lars Bondemark. "Clear aligner orthodontic treatment: Angle Society of Europe consensus viewpoint." Journal of Orthodontics 48, no. 3 (April 16, 2021): 300–304. http://dx.doi.org/10.1177/14653125211006423.
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Orthodontics has witnessed not only an exponential rise in demand from adult patients but accompanying this, the emergence of alternate aesthetic treatment options to the more traditional fixed labial appliance. The concept of using clear aligners as a means of achieving tooth movement has increased in popularity among both patients and clinicians alike. However, the question over best research evidence as to their clinical effectiveness to treat a range of malocclusion traits remains elusive and controversial among the profession. In an attempt to offer the profession some clear guidance, The Angle Society of Europe reviewed and discussed the current published evidence (2005–2018) on their clinical use, during the annual meeting in January 2020, to help formulate a consensus viewpoint on the clinical applications.
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Azeem, Muhammad, and Waheed Ul Hamid. "Incidence of white spot lesions during orthodontic clear aligner therapy." Journal of the World Federation of Orthodontists 6, no. 3 (September 2017): 127–30. http://dx.doi.org/10.1016/j.ejwf.2017.07.001.
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Rossini, Gabriele, Matteo Schiaffino, Simone Parrini, Ambra Sedran, Andrea Deregibus, and Tommaso Castroflorio. "Upper Second Molar Distalization with Clear Aligners: A Finite Element Study." Applied Sciences 10, no. 21 (November 1, 2020): 7739. http://dx.doi.org/10.3390/app10217739.
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Among orthodontists and scientists, in the last years, upper molar distalization has been a debated topic in the orthodontic aligner field. However, despite that few clinical studies have been published, no insights on aligners’ biomechanics regarding this movement are available. The aim of this study was to assess, through finite element analysis, the force system resulting in the upper arch during second maxillary molar distalization with clear aligners and variable attachments settings. The average tooth distalization was found to be 0.029, with buccal flaring of the upper incisors in all attachment configurations. The mesial deformation of the aligner was registered to be 0.2 mm on average. Different pressure areas on the interface between aligners and upper molars were registered, with the mesial attachment surface to be directly involved when present. Periodontal ligament pressure was reported to range between 67 g/cm2 and 132 g/cm2. Configurations with rectangular attachments from second molar-to-canine and from first molar-to-canine present, in an in silico environment, almost equal efficiency in distalizing the upper second molar. However, attachments from the second molar to the canine are suggested to be adopted in clinical environments due to greater feasibility in everyday practice.
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Macrì, Monica, Silvia Medori, Giuseppe Varvara, and Felice Festa. "A Digital 3D Retrospective Study Evaluating the Efficacy of Root Control during Orthodontic Treatment with Clear Aligners." Applied Sciences 13, no. 3 (January 25, 2023): 1540. http://dx.doi.org/10.3390/app13031540.
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This study aimed to investigate the efficacy of torque movement and the incidence of root resorption in the maxillary and mandibular teeth with clear aligner therapy using cone-beam computed tomography. The sagittal root positions, the faciolingual inclinations, and the root lengths of 672 teeth, from central incisors to first molars for each arch, were measured and compared on virtual cross sections from pre-treatment and post-treatment cone-beam computed tomography of 28 patients who received comprehensive orthodontic treatment with clear aligners. An improvement of root position was found in incisors, canines, and premolars of the upper and lower arches: over 78% of their root was centered in the alveolus at the end of orthodontic treatment. There was a statistically significant torque increase for incisors, canines, and first premolars at the end of therapy. The most considerable torque changes were achieved in incisors and canines, while the lowest was in posterior teeth. The maxillary and mandibular central incisors achieved 3.26 ± 1.95° and 2.97 ± 2.53° of mean torque increase, respectively. The root length loss was greater in the upper and lower central incisors. All teeth showed mild resorption (<10%) except for two upper lateral incisors, which showed moderate resorption (10.79% and 10.23%). Comprehensive treatment with clear aligners improved sagittal root position and increased torque, especially in the anterior teeth. Most teeth showed mild resorption after clear aligner therapy, and only two showed moderate resorption.
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Chami, Vitória de Oliveira, Livia Nunes, and Jonas Capelli Júnior. "Expression of cytokines in gingival crevicular fluid associated with tooth movement induced by aligners: a pilot study." Dental Press Journal of Orthodontics 23, no. 5 (October 2018): 41–46. http://dx.doi.org/10.1590/2177-6709.23.5.041-046.oar.
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ABSTRACT Introduction: The search for more aesthetic and comfortable orthodontic devices has led to an increase in the use of clear aligners. Objective: To increase knowledge on biological mechanisms of orthodontic tooth movement using Invisalign aligners. Methods: This study included 11 patients with a mean age of 23.6 ± 4.8 years. Cases planning included alignment and leveling of lower incisors using Invisalign aligners. Gingival crevicular fluid samples were collected from the lower incisors on the day of delivery of aligner number 1 (T0) and after 1 (T24h), 7 (T7d), and 21 (T21d) days. During the observation period of the study, the patients used only the aligner number 1. Levels of nine cytokines were quantified using Luminex’s multi-analysis technology. Non-parametric tests were used for comparisons between cytokine expression levels over time. Results: Cytokine expression levels remained constant after 21 days of orthodontic activation, except those of MIP-1β, which presented a statistical difference between T24h and T21d with a decrease in the concentration levels. IL-8, GM-CSF, IL-1β, MIP-1β, and TNF-α showed the highest concentrations over time. Conclusions: The different behavior in the levels of the investigated cytokines indicates a role of these biomarkers in the tissue remodeling induced by Invisalign.
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Khera, AmitKumar, Shrestha Bisht, and Pradeep Raghav. "White spot lesions during orthodontic clear aligner therapy: A scoping review." journal of orthodontic science 11, no. 1 (2022): 9. http://dx.doi.org/10.4103/jos.jos_170_21.
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Robertson, Lindsay, Harsimrat Kaur, Nathalia Carolina Fernandes Fagundes, Dan Romanyk, Paul Major, and Carlos Flores Mir. "Effectiveness of clear aligner therapy for orthodontic treatment: A systematic review." Orthodontics & Craniofacial Research 23, no. 2 (May 2020): 133–42. http://dx.doi.org/10.1111/ocr.12353.
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Hwang, Da-Hey, Hyun-Kyung Yun, and Tae-Yoon Hwang. "Knowledge and self care behaviors of orthodontic patients using clear aligner." Journal of Korean society of Dental Hygiene 14, no. 4 (August 30, 2014): 539–45. http://dx.doi.org/10.13065/jksdh.2014.14.04.539.
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Alansari, Sarah, Maria Isabel Atique, Juan Pablo Gomez, Mohammad Hamidaddin, Soumya Narayani Thirumoorthy, Chinapa Sangsuwon, Edmund Khoo, and Jeanne M. Nervina. "The effects of brief daily vibration on clear aligner orthodontic treatment." Journal of the World Federation of Orthodontists 7, no. 4 (December 2018): 134–40. http://dx.doi.org/10.1016/j.ejwf.2018.10.002.
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Lim, Seung-Weon. "Non-Extraction Orthodontic Treatment with Sequential Distalization Strategy of Clear Aligner." Clinical Journal of Korean Association of Orthodontists 12, no. 4 (December 30, 2022): 275–90. http://dx.doi.org/10.33777/cjkao.2022.12.4.275.
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Daniele, Valeria, Ludovico Macera, Giuliana Taglieri, Loredana Spera, Giuseppe Marzo, and Vincenzo Quinzi. "Color Stability, Chemico-Physical and Optical Features of the Most Common PETG and PU Based Orthodontic Aligners for Clear Aligner Therapy." Polymers 14, no. 1 (December 21, 2021): 14. http://dx.doi.org/10.3390/polym14010014.
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It is difficult to find research papers collecting comparative results about characterization studies of clear aligners. Therefore, the aim of this paper is to provide the first comparative analysis of most commercial clear aligners, in terms of their stability towards intra-oral staining agents, their physicochemical and optical properties, as well as their water absorption behavior. Five types of aligners, characterized by different techniques, are considered: Erkodur, Essix Plastic, Ghost Aligner, Zendura, and Invisalign. The obtained results show that clear aligners are made up of PETG, semi rigid PU, and a mixture of PU and PETG, with different degrees of crystallinity which affect the transparency of each aligner. In particular, the PETG-based materials reveal the highest value of short-range order and the highest properties in terms of transparency in the visible range. After 14 days of immersion into red wine and coffee, PETG and PU-based aligners reveal a perceivable change in color (NBS values from 1.5 to 3), corresponding to a loss of transparency due to the deposition of impurities on the surface. These results are particularly marked for Invisalign, showing changes towards other colors (NBS up to 35), probably due to the thermoforming process which led to the formation of a wrinkled surface entrapping the impurities.
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Kirlys, Robertas, Rugilė Nedzinskaitė, Roberto Rongo, Marco Severino, Algirdas Puisys, and Vincenzo D’Antò. "Digital Planning Technique for Surgical Guides for Prosthetic Implants before Orthodontic Treatment." Applied Sciences 12, no. 11 (May 30, 2022): 5566. http://dx.doi.org/10.3390/app12115566.
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Background: The use of digitalization allows clinicians to plan the position of dental implants in orthodontic patients treated with aligners in the beginning of their orthodontic treatment, instead of waiting until the end of orthodontic treatment, integrating implant restorations with orthodontic biomechanics. Aim: The aim of this case report is to describe a digital workflow for aligner treatment supported by implants, in which implants are placed at the beginning of the treatment and support the orthodontic treatment. Materials and Methods: Digital planning for orthodontic treatment with clear aligners and the preparation of surgical guides for implant surgery before orthodontic treatment are used to solve two multidisciplinary cases. Cone-beam computed tomography (CBCT) and virtual dental impressions are used for the virtual planning. Successively, a surgical guide for implant placement and aligners are used in the treatment plan. Results: The digital orthodontic setup with the integration of the root position allows the clinician to plan the position of dental implants on the final occlusion. The placement of the implant before the start of the orthodontic treatment allows the implants to be used as skeletal anchorage, thereby helping the orthodontic biomechanics. Conclusions: This study describes how to perform a digital workflow with orthodontic virtual planning and the design of surgical guides for implant placement. This technique is potentially promising for complex orthodontic cases.