Journal articles: 'Teeths'

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Ali, MM, MM Hossain, S. Akhter, MS Islam, and MA Hashem. "Effect of age on slaughterhouse by-products of indigenous cattle of Bangladesh." Bangladesh Journal of Animal Science 42, no. 1 (July 23, 2013): 62–66. http://dx.doi.org/10.3329/bjas.v42i1.15784.

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The present study was conducted to investigate the effect of age on slaughterhouse by-products and their chemical composition of indigenous cattle of Bangladesh. Live weight, warm carcass weight and dressing percentage of different age group (T1= 0 Tooth, T2= 2 Teeths, T3= 4 Teeths, T4= 6 Teeths and T5= 8 Teeths) of indigenous cattle were estimated. Average live weight and warm carcass weight of indigenous cattle was 167.64±79.93 kg and 84.83±47.88 kg, respectively on which age has significant effect. The average dressing percentage of indigenous cattle was 48.99±4.84. The average weight (kg) of inedible by-products eg. blood, hide, tail, scrotum, penis, cannon, horn, ear and tail was 6.35±0.69, 14.02±1.66, 0.34±0.03, 0.27±0.02, 0.28±0.03, 2.74±0.22, 0.33±0.04 and 0.17±0.02, respectively on which age has significant effect. The average weight (kg) of edible by-products eg. liver, heart, kidney, lung, brain, spleen, empty stomach, empty intestine, head and tongue was 2.40±0.22, 0.55±0.06, 0.35±0.04, 1.43±0.14, 0.33±0.01, 0.46±0.04, 6.32±0.74, 4.77±0.52, 8.21±0.78 and 0.48±0.04, respectively on which age has significant effect. The chemical composition of edible by-products was more or less similar to the main products of meat industry. DOI: http://dx.doi.org/10.3329/bjas.v42i1.15784 Bang. J. Anim. Sci. 2013. 42 (1): 62-66

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Wang, Chao, Zhen Hui Luan, and Wei Peng Gao. "Design of Pitch Curve of Internal-Curved Planet Gear Pump Strain in Type N-G-W Based on Three-Order Ellipse." Advanced Materials Research 787 (September 2013): 567–71. http://dx.doi.org/10.4028/www.scientific.net/amr.787.567.

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In N-G-W type non-circular planetary gear strain, the planetary gear is meshed both with the center wheel and the inner gear ring. The parameters which the design of the planetary wheel system required can be received according to the three-order elliptic equation which consist of continuous smooth closed curves as the pitch curve equation of the center wheel, and on the basis of planetary gear teeths relation, the closed condition of the pitch curve and the teeth uniformly distributed in the curve. This paper studied the design process of the pitch curve on an N-G-W type internal-curve planet gear pump by a practical example.

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Ashar, Fadli, and Evellyn Islami Abdurokhman. "Laporan Kasus: Dentinogenesis Imperfekta." STOMATOGNATIC - Jurnal Kedokteran Gigi 16, no. 1 (March 22, 2019): 12. http://dx.doi.org/10.19184/stoma.v16i1.19952.

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Dentinogenesis imperfecta is the one of most common hereditary disorder of dentin formation, especially at histodifferentiation stage. It reported have to an incidences of 1 in 8000. Dentinogenesis imperfecta is an autosomal dominant, affecting both the formation and mineralizatin of dentin. CASE: A 20-year-old female patient came to integrasi A RSGMP UNSOED with crown fracture of anterior teeth 11, after eating a solid food. A permanent filling was conducted on 21 with the same cause one year ago. Intraoral examination showed attrition, yellowish and translucent on both maxillary and mandibullary teeths. Radiography showed that obliterated pulp chamber and shrinked root canal. Porcelain fused to metal crown was planned for this case. Conclusion: Dentinogenesis imperfecta is a hereditary disorder of tooth development. It caused the teeth to be discoloured (blue-grey or yellow-brown color), and fragile. Treatment planning for patient with dentinogenesis imperfecta is restorative treatment that can be apply to deciduous or permanent teeth, because exposed dentin will increase the risk of caries and infection.

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Shevtsov, Alexandr Nikolayevich. "THE TRAJECTORY OF TEETHS RIPPER OF THE SOIL IN SPACE." Theoretical & Applied Science 2, no. 06 (June 30, 2013): 39–50. http://dx.doi.org/10.15863/tas.2013.06.2.5.

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Faluvegi, Erzsebet, Csaba Zoltan Mate, Cătălin Ionel Cobliş, and Luciana Cristea. "Measuring and Analyzing the Bevel Gears with Octoid I Teething." Applied Mechanics and Materials 325-326 (June 2013): 870–74. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.870.

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This paper presents the error determination on the teeths flanks of the bevel gears with straight teething using the theoretical profile. It summarizes the state-of-the-art of the profile verification. A coordinate measuring machine, type MITUTOYO Crista Plus was used for realizing the measurements. The theoretical profile is built by theoretical equations to identify the errors. The error distribution is presented by overlapping the suitable surfaces. So the bevel gears with straight teething can be evaluated in terms of the profile tolerance.

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Xie, Yulin, Yueling Li, Zhichuen Pan, Xueheng liu, Qi Ma, and Noriyuki Nakagi. "A Retrospective Clinical Study of Loading of JIAD(KOM) Implants with Nature Teeths." Journal of Hard Tissue Biology 14, no. 2 (2005): 214–15. http://dx.doi.org/10.2485/jhtb.14.214.

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Капитонов, Александр, Aleksandr Kapitonov, Виктор Пашкевич, and Viktor Pashkevich. "Research of operational characteristics of planetary eccentric transfers with the modified profile of teeths." Bulletin of Bryansk state technical university 2015, no. 3 (September 30, 2015): 34–39. http://dx.doi.org/10.12737/22985.

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Results of kinematics and durabilitycomputer modeling of details of planetary eccentric transfergearing are given. The technique of carrying out pilot studies of kinematic accuracy and smoothness of a reducerwork is described. The analysis of the schedule and an amplitude-frequency range of a kinematic error of transfer is carried out.

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Tridapalli, Luisa Piazzon, and Marina Steinbach. "The use of golden proportion in dentistry: a integrative review." Revista Odonto Ciência 33, no. 1 (December 30, 2018): 77. http://dx.doi.org/10.15448/1980-6523.2018.1.29703.

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OBJECTIVE: The purpose of this integrative review was assembling information about the golden ratio, improving a different sight to the theme.METHODS: Original articles were retrieved on databases Scielo, PubMed, Lilacs and Web of Science selecting proper articles published between the years of 2006-2017.RESULTS: 55 articles were included, in which 42% of the findings corresponded to aesthetic perception and 40% to golden ratio and ethnical groups.CONCLUSION: The findings suggest that there’s no relationship between golden ratio and natural teeths and this ratio isn’t a decisive factor to ensuring the smile attractiveness, however, if this proportion were individually applied for each patient, can become a useful guide.

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Behrens, Bernd Arno, Richard Krimm, and Valerian Salfeld. "Process-Machine Interaction in Sheet-Bulk Metal Forming." Key Engineering Materials 504-506 (February 2012): 999–1004. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.999.

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The present contribution deals with the process-machine interaction and its impacts on the workpiece quality by forming parts with sheet-bulk metal forming. It focuses on the manufacturing of complex asymmetrical parts with functional elements. The functional applications of these elements such as fixation, motion and load transmission require compliance with high geometrical accuracy as well as high precision regarding the final mechanical properties of the part. The high process forces in horizontal as well as in vertical direction to form these elements cause displacements of the tool and press components, which lead to workpiece defects retroactively. Although the interaction between the forming machine and process affects the quality of the finished part significantly, the machine influence is usually ignored in the analysis of the forming process with the Finite-Element-Method. The challenges mentioned are demonstrated by forming of a complex asymmetrical part with gear teeths and carrier elements. As typical for sheet-bulk metal forming, the dimensions of the finished gear teeths (4mm) are much higher as the initial thickness of the sheet metal (3mm). The displacements of the press components during the process have been determined by means of optical measuring systems. The results are presented in all three spatial directions. The conclusions about the acting process forces in horizontal and vertical direction have been made by analyzing the press displacements by means of a new developed three-axial load device. Finally, this paper introduces a suitable approach to represent the machine characteristics in order to improve the computational accuracy of sheet-bulk metal forming simulations and gives an overview about the possibilities to improve the process stability by improving the mechanical components of forming machines.

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Gudkov, Andrey, Vasiliy Sviridov, and D. Kutishchev. "Process of cutting of wood by a saw chain with modified G-shaped(-Shaped) teeths." Актуальные направления научных исследований XXI века: теория и практика 2, no. 3 (June 1, 2014): 231–34. http://dx.doi.org/10.12737/4377.

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Urinov, Nasullo, Muhabbat Saidova, Akbar Abrorov, and Navruz Kalandarov. "Technology of ionic-plasmic nitriding of teeths of disc saw of the knot of saw cylinder." IOP Conference Series: Materials Science and Engineering 734 (January 29, 2020): 012073. http://dx.doi.org/10.1088/1757-899x/734/1/012073.

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Zsuzsanna, Bardocz Veres, and Cerghizan Diana. "Clinical Evaluation of Cement Thickness Around Pre- Fabricated vs. Costume-Fabricated Posts." European Scientific Journal, ESJ 12, no. 27 (September 30, 2016): 39. http://dx.doi.org/10.19044/esj.2016.v12n27p39.

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Objectives: The purpose of this study was to evaluate the variation of cement thickness in different regions of the root in case of prefabricated and custom-fabricated posts. Material and methods: Totally twelve extracted human incisors and premolars with single tooth canals were distributed among 3 experimental groups of 4 specimens each. They were treated endodontically and restored with prefabricated fibre posts or custom-fabricated metallic posts, cemented with different adhesive cements. Each sample was immersed in 1% methylene blue solution and after 10 days the teeths were sectioned into horizontal slices,resulting in three slices for each specimen. The distances between the canal wall and the post perimeter were measured on images of each slice with digital caliper. Results: The costume-fabricated post groups (group 2,3) obtained statistically significant lower cement thicknesses,in particular in the apical third. The prefabricated post group (group 1) showed the highest cement thickness. Cement thickness was less for the specimens prepared using direct impression technique.

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Anwar, Khurram, Naveed Irfan, Mudassar Iqbal Arain, and Saira Shahnaz. "Prevalence of odontogenic infections and their risk factors among the general population of Hyderabad, Pakistan." Professional Medical Journal 26, no. 11 (November 10, 2019): 1931–36. http://dx.doi.org/10.29309/tpmj/2019.26.11.3295.

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Objectives: Oral health performs a central part in general health which is associated with good oral hygiene. Teeth and their supporting (periodontal) structures are considered most important to oral health. Therefore, Most prevalent oral diseases such as odontogenic infections (dental caries, gingivitis, periodontal disease) gum disease, oral mucosal and congenital dental problems are foremost oral health dilemma in general population. Objective: The main objective of current study was to find out the Prevalence of odontogenic infections and their risk factors among the general population. Study Design: This is a descriptive cross sectional study. Setting: Dental patients who came to different dental clinical settings of Hyderabad, Pakistan. Period: August to December 2018. Material and Methods: A total of 300 patient’s data were collected. In current study, the variables of interest are microbial odontogenic infections such as dental caries, gingivitis and periodontal disease were included in study. Following risk factors were explored: gender, age, residence, education level, disease duration, smoking, family history, and tooth paste habit. All information/data were personally collected by interview technique and oral cavity examination. The observational data were reported in the specific form and used descriptive statistics to find out the results. Results: A total of 300 dental patients having various infections such as gingivitis (47%), dental caries (20.7%) and periodontal infection (32.3%) were reported in this study. Of these, 162(54%) were females and 138(46%) of males. The most common age of patients i.e. 41.7% were from 41 to 60 years. Education status showed that 86% of the dental patients had education and 35.3% had family history of dental diseases. Factors such as mostly duration of diseases were > 6 months(33.7%) and almost 66% patients has habit of cleaning the teeths, However, Calculus and tarta deposited in 62.7% patients teeth. Smoking (21.3%) and 46.6% patients used sweet foods on daily purpose. Moreover, amoxicillin most frequently prescribed antimicrobial agent 39% followed by metronidazole 32.7%. Conclusion: Dental diseases are common public health problem among our society, poor oral hygiene & dietary habits and deposition of calculus are associated factors for odontogenic infections. Moreover, prescribing pattern shows that Amoxicillin and Metronidazole has been considered as first-line treatment for oral infections. Therefore, oral hygiene education, dietary and proper cleaning of teeth habits and dental visit at early stage of disease should be recommended for patients to avoid and cure dental odontogenic infections.

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Jiang, Jie, Yiyong Yang, Yongjian Li, and Weifeng Huang. "Theoretical and experimental investigation on maximum pressure loads of labyrinth seal’s teeth." Advances in Mechanical Engineering 10, no. 10 (October 2018): 168781401879434. http://dx.doi.org/10.1177/1687814018794348.

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The pressure loads acting on the teeth of a labyrinth seal are usually not uniform. Sometimes, one tooth would take almost half of the total pressure difference, which is detrimental to the teeth’s working life and sealing effect. Therefore, the estimation of maximum pressure load on the teeth is helpful to design a sound structure of labyrinth seal. This article analyzes the influence of teeth number, boundary condition, clearances, and structure parameters on maximum pressure loads of labyrinth seal teeth in low pressure ratio conditions ( PR≤ 0.5, PR = Pout/ Pin). Both the computational fluid dynamics model and test results show that teeth number and pressure load are main factors influencing the maximum pressure load on teeth. Finally, a fitting equation is given to estimate the maximum pressure load on labyrinth seal teeth and its results are in good agreement with the computational fluid dynamics model.

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Costa, George Moreira, Suelleng Maria Santos Soares, Paula Cristina Pelli Paiva, Flaviana Dornela Verli, Patrícia Furtado Gonçalves, Sangela Maria da Silva Pereira, Rudys Rodolfo De Jesus Tavarez, Janir Alves Soares, and Etevaldo Matos Maia Filho. "Factors Affecting the Periapical Status of Root-Filled Canals: A Cross-Sectional Study at the Undergraduate Level." International Journal of Dentistry 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/7413204.

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Objective. The aim was to evaluate the influence of multiple factors on the periapical status of endodontically treated (ET) teeth. Methods. The patients were clinically and radiographically reevaluated after root canal therapy. The quality of the root-filled canals, coronal restorations, intraradicular posts, dental caries, and periodontal parameters were associated with the teeth’s periapical status. Results. The 122 patients provided 154 ET teeth; 97.4% teeth were asymptomatic, and 75.5% had a normal periapical status. The percentage of perfect, satisfactory, and deficient root-filled canals was of the order of 41.6%, 46.1%, and 12.3%, respectively. The percentage of adequate and inadequate coronal restorations was 31.2% and 68.8%, respectively. A total of 14.9% teeth had intraradicular posts, and 29.2% had cavitated carious lesions in the dentin. Gingival bleeding was observed in 31.8% of teeth, and dental biofilm was visible in 58.4%. A total of 11.7% showed pathologic tooth mobility, and 22.1% teeth were diagnosed with periodontal disease. Conclusions. Carious lesions, gingival bleeding, and tooth mobility were significantly associated with the occurrence of periapical lesions in root-filled canals.

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Huang, Rui, Guoqing Chen, Ting Li, and Quanke Feng. "Evaluation standard and improvement method for multi-column envelope profile in single screw compressors." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 234, no. 6 (February 23, 2020): 900–916. http://dx.doi.org/10.1177/1350650120908106.

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Multi-column envelope profile is the newly proposed engagement pair’s profile for single screw compressors. Based on hydrodynamic lubrication theory, a calculation model of the oil film moments for star wheel teeth with multi-column envelope profile was established. In order to balance the total oil film moments of the teeth, a profile evaluation standard and improvement method for the multi-column envelope profile were proposed. Then, the profile for a single screw compressor was optimized. The meshing pair with optimized profile is loaded into a prototype to carry out the running test. Results show that the optimization method improves the wear resistance of the star wheel teeth, especially the teeth’s front side, and enhances the running stability of the compressor.

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Mesquita, Gabriela Campos, Priscilla Barbosa Ferreira Soares, Camilla Christian Gomes Moura, Marina Guimarães Roscoe, Saul Martins Paiva, and Carlos José Soares. "A 12-Year Retrospective Study of Avulsion Cases in a Public Brazilian Dental Trauma Service." Brazilian Dental Journal 28, no. 6 (December 2017): 749–56. http://dx.doi.org/10.1590/0103-6440201701610.

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Abstract This study assessed the epidemiological characteristics and management of the permanent teeth avulsion cases attended in a Brazilian dental trauma service from December 2005 to August 2016. A retrospective study was conducted of case records of 93 patients involving 139 avulsed teeth. Data included sex, age, trauma etiology, location of the accident, number and position of avulsed teeth, and presence and type of associated traumatic lesions. Management of the avulsed teeth was addressed as: time elapsed until teeth were retrieved from the accident’s location; teeth’s cleaning method and storage media; time elapsed until seeking treatment and replantation. The majority of the patients were children from 6-10 (31.2%) and 11-15 years old (26.9%). Male patients were more affected than female. Bicycle accident was the main etiological factor (31.2%). In 56 (60.2%) cases, traumatic lesions to neighboring teeth were present. In 55 (59.1%) cases, lesions to adjacent soft tissues were reported. In 82 (88.2%) cases, patients requested treatment at the same day of the accident. Sixty-four teeth (46.0%) were immediately retrieved and 28 (20.1%) were not found. Forty-two teeth (30.2%) were kept dry. Only one tooth (0.7%) was immediately replanted at the accident’s site, while 51 teeth (36.7%) were not replanted. Numerous avulsed teeth were inappropriately managed and immediate replantation was not frequent. Public policies must be created to raise awareness towards the particularities of avulsion cases.

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Malchiodi, Luciano, Francesca Zotti, Tommaso Moro, Daniele De Santis, and Massimo Albanese. "Clinical and Esthetical Evaluation of 79 Lithium Disilicate Multilayered Anterior Veneers with a Medium Follow-Up of 3 Years." European Journal of Dentistry 13, no. 04 (October 2019): 581–88. http://dx.doi.org/10.1055/s-0039-1700371.

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Abstract Objectives Primary aim of this study was to evaluate survival rate of lithium disilicate veneers in upper and lower anterior teeth. Secondary aims were to evaluate changing in proportions of teeth before and after restorations and to assess mean thickness of the veneers. Materials and Methods Seventy-nine upper and lower lithium disilicate veneers were made in 13 patients with worn teeth. Mean follow-up was 3 years. To perform anterior definitive rehabilitations, malocclusions and loss of vertical dimension were treated by full mouth rehabilitations to obtain proper occlusal conditions. Veneers were made of lithium disilicate core and fluorapatite-based ceramic stratification. Survival rate was calculated by Kaplan–Meier analysis. Changing in teeth proportion before and after restorations was analyzed by a paired t-test. Descriptive statistics of thickness values were also performed. Results One case of detachment was observed with a 98.7% survival rate. Teeth’s proportions were preserved although the first upper right incisor and canine changed in dimension. Conclusions Lithium disilicate veneers in esthetical rehabilitations of worn teeth proved to be an effective way of treatment in a medium follow-up of 3 years. Proportions seemed to be maintained with a minimum dental removal.

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Samad, Rasmidar. "RISIKO HIPERTENSI KARENA KEHILANGAN GIGI PADA LANSIA." Journal of Dentomaxillofacial Science 1, no. 1 (December 4, 2016): 6. http://dx.doi.org/10.15562/jdmfs.v1i1.122.

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Changing dietary patterns in elderly as a result ofchange in dental status, such as a loss of teeth anddenture wearing they are may cause reductions of someessential foods and may be cause various healthdisorders. The purpose of this study was to investigate thecorrelation between loss of teeth, denture wearing andhypertension and they are relative risk. Study design is across sectional (n = 131 elderly). We performed a linermultiple regression to analysis between loss of teeth,wearing denture and hypertension (CI: 95%) Result: onehundred thirty-one sample were recruited. Mean age63,37in institutional elderly 62,2% and 64% non institutionalwaslossofposteriorteeth.Theysuggested have a correlation between loss of teethR2 : 0.31 (p:0.043), wearing denture (p. 0.000, RR. 1.72,CI 95%) . and hypertension.

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Farrimond, Katherine. "‘Being a horror fan and being a feminist are often a conflicting business’: Feminist horror, the opinion economy and Teeth’s gendered audiences." Horror Studies 11, no. 2 (October 1, 2020): 149–68. http://dx.doi.org/10.1386/host_00016_1.

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Horror has long been understood as a ‘bad object’ in relation to its audiences. More specifically, this presumed relationship is a gendered one, so that men are positioned as the genre’s natural audience, while women’s engagement with horror is presented as more fractious. However, those horror films framed as feminist require a reorientation of these relations. This article foregrounds the critical reception of a ‘conspicuously feminist’ horror film in order to explore what happens to the bad object of horror within an opinion economy that works to diagnose the feminism or its absence in popular culture. Reviews of Teeth (2007), a ‘feminist horror film’ about vagina dentata, illustrate the push and pull of gendered power attached to feminist media, where empowerment is often understood in binary terms in relation to its gendered audiences. The assumed disempowerment of male audiences takes precedence in many reviews, while other narratives emerge in which Teeth becomes an educational tool that might change gendered behaviours, which directly empowers female audiences or which dupes women into believing they have been empowered. Finally, Teeth’s reviews expose a language of desire and fantasy around vagina dentata as an automated solution to the embodied experiences of women in contemporary culture. Teeth’s reviews, I argue, offer a valuable case study for interrogating the tensions in discourse when the bad object of horror is put to work for feminism.

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DE SMET, WILLEM H. "Asciaporrectidae, a new family of Rotifera (Monogononta: Ploima) with description of Asciaporrecta arcellicola gen. et sp. nov. and A. difflugicola gen. et sp. nov. inhabiting shells of testate amoebae (Protozoa)." Zootaxa 1339, no. 1 (October 19, 2006): 31. http://dx.doi.org/10.11646/zootaxa.1339.1.2.

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A new family of monogonont rotifers, Asciaporrectidae, is proposed for Asciaporrecta arcellicola gen. et sp. nov., A. difflugicola gen. et sp. nov. and A. hyalina (Wulfert, 1939) comb. nov. for Pleurotrocha hyalina. The new family is characterized by its trophi organized for grasping, with long rod-shaped manubria bearing an axe-shaped head; unci lying in a plane perpendicular to the plane of the incus, with 2–3 large teeth and well developed subunci composed of 3–5 teeth; and the unci/subunci pivoting on the broad, not pointed tips of the flat rami. Asciaporrecta arcellicola gen. et sp. nov. has 3-teethed unci; rami tips straight cut off, slightly expanded outwardly; and right ramus bearing a series of small knobs on inner margin distally; inhabiting shells of live Arcella discoides Ehrbg. (testate amoebae). Asciaporrecta difflugicola gen. et sp. nov. has 2-teethed unci; rami tips blunt, concave, reinforced and knobbed inwardly; inner margins of rami smooth; inhabiting shells of live Difflugia spp. (testate amoebae).

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Fernandes, Thais Maria Freire, Renata Sathler, Gabriela Letícia Natalício, José Fernando Castanha Henriques, and Arnaldo Pinzan. "Comparison of mesiodistal tooth widths in Caucasian, African and Japanese individuals with Brazilian ancestry and normal occlusion." Dental Press Journal of Orthodontics 18, no. 3 (June 2013): 130–35. http://dx.doi.org/10.1590/s2176-94512013000300021.

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OBJECTIVE: To observe the presence of sexual dimorphism and compare the mesiodistal width of the teeth in Caucasian, African and Japanese individuals with Brazilian ancestry not orthodontically treated and with normal occlusion. METHODS: One hundred pairs of dental casts were used. It was measured, from first molar to first molar in both arches, the teeth's mesiodistal widths, using a digital caliper. For the statistical analysis of results Kolmogorov-Smirnov, t test, ANOVA and Tukey's test (p < 0.05) were used. RESULTS: Sexual dimorphism occurred on the three evaluated groups, and the highest mesiodistal widths were found in males. There was statistically significant difference between racial groups in all evaluated teeth in males. However, in females, this same difference was found only on upper lateral incisor and first molar; and lower lateral incisor, canine, first premolar and first molar. CONCLUSION: Most of mesiodistal measures present particular characteristics in relation to gender, with higher values for males, and to race, with a tendency for African to present greater mesiodistal distance of the teeth, followed by Japanese and Caucasians, respectively, important for the correct diagnosis and orthodontic planning.

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Borges, Ana Carolina Guimarães, Mayra Reis Seixas, and Andre Wilson Machado. "Influence of different width/height ratio of maxillary anterior teeth in the attractiveness of gingival smiles." Dental Press Journal of Orthodontics 17, no. 5 (October 2012): 115–22. http://dx.doi.org/10.1590/s2176-94512012000500016.

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OBJECTIVE: To evaluate, among laypersons and orthodontists, the influence of the width/height proportions of upper anterior teeth on the smile attractiveness, in photographs of close up smile from three adult Caucasian women, with 4 mm of gingival exposure. METHODS: The photographs of close up smiles were digitally manipulated and six images were created from each smile with teeth's width/height proportions in 65%, 70%, 75%, 80%, 85% and 90%. Then, all these images were manipulated again and a black mask covering all teeth from the lower arch was created. The figures were then assessed by 60 evaluators, 30 orthodontists and 30 laypersons, who assigned, in a visual analog scale, the level of attractiveness of each image. RESULTS: The obtained results, in general, showed that the proportions of 75%, 80% and 85% received the highest scores while the proportion of 65% received the lowest scores, for both groups of examiners (p < 0.05). When orthodontists and laypersons were compared, it was not found, in most situations, a significant statistical difference between their assessments (p > 0.05). Yet, the comparison between scores assigned to smiles with and without inferior teeth showed that, for all situations, there was no statistically significant difference between them (p > 0.05). CONCLUSION: For patients with gingival smile, the width/height proportions of upper anterior teeth considered more esthetic were the ones of 75%,80% and 85% for laypersons and orthodontists, and the presence or absence of inferior teeth did not affect the attractiveness level of the assessed smiles.

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Leite, Katiane Vieira Menezes, Gustavo Ross Kinder, Leonardo Fernandes da Cunha, Gisele Maria Correr, Carla Castiglia Gonzaga, and Roberta Santos Domingues. "Zircônia e resina composta nanoparticulada em dentes anteriores fraturados: relato de caso clínico Zirconia and nanoparticulate composite resin on fractured anterior teeth: a clinical case report." RSBO 1, no. 1 (September 13, 2018): 60. http://dx.doi.org/10.21726/rsbo.v1i1.591.

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Introduction: Fractures at upper anterior teeth are common. In root fracture cases, a dental implant approach proves to be a viable alternative sometimes. Several materials can be used in implant rehabilitation processes. Zirconia, a proven material for restorative purposes, is being employed for biological, functional, and aesthetic ends. In other situations, only the fractured teeth’s restoration with composite resin can rehabilitate their aesthetics and use. Objective: The purpose hereof is to report the use of the immediate implantinstallation technique after an upper incisor extraction with the diagnosis of root fracture, and a coronary fracture zirconia rehabilitation and restoration with a composite resin. Case report: A 24-year-old patient fractured the left central and lateral upper incisors. Tooth 21 received a zirconia crown implant and tooth22 was treated with a composite resin made with nanotechnology. Conclusion: Zirconia and composite resin are materials that present satisfactory biological, functional, and aesthetic features to restore fractured anterior teeth.

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Шириязданов, Rustem Shiriyazdanov, Пикмуллин, Gennadiy Pikmullin, Юнусов, Rafail Yunusov, Булгариев, and Gumar Bulgariev. "MOTION EQUATION OF TOOTH BLADE OF SPIRAL-PLATE WORKING UNIT IN SPACE." Vestnik of Kazan State Agrarian University 11, no. 1 (March 25, 2016): 66–69. http://dx.doi.org/10.12737/19327.

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The article deals with the spiral-plate working unit, configured with teeth, the cutting edge (blade) of which is made on site (curve) of the logarithmic spiral. Each helix of studied working unit (taking into account properties of a helical surface or a line) is set at an angle and lift the helix has an angle of rotation generator (i.e., the helix angle of twist). In this case, to create the motion equation of any point of the teeth’s motion, the working unit is in the spatial coordinate system 0xyz so that the origin was in his heart.

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Heo, Narang, Kwanghee Lee, Soyoun An, Jihyun Song, and Jiyoung Ra. "Cariogenic Potential of Nutritional Supplements for Children on Bovine Teeth." JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY 41, no. 3 (August 31, 2014): 233–40. http://dx.doi.org/10.5933/jkapd.2014.41.3.233.

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Imran, Tanzeela, Naseer Ahmed, and Bushra Nazeer. "Pattern of occlusal contacts in intercuspal position of natural teeth." International Journal of Dental Research 4, no. 1 (May 2, 2016): 19. http://dx.doi.org/10.14419/ijdr.v4i1.5671.

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The purpose of this study was to determine the patterns of occlusal contacts and location in intercuspal position of natural teeth.A cross-sectional study was conducted with a sample size of around seventy patients within a span of seven months, complete mouth impressions were made of each patient with hydrocolloid material and the impressions were poured in dental stone. The contact areas of the teeth in the maximum intercuspation position were determined by wax. Three distinct types of indentations were noted on the wax interocclusal record. Then similarly the centric occlusion contacts of the teeth on the cast were determined by interposing a new piece of wax, approximating the casts in the maximum intercuspation position by hand, and applying pressure. The oral and cast wax recordings were then compared. The occlusal relation for each individual tooth was then classified and recorded in a Performa.Following wax interocclusal record of natural teeth in intercuspation an ideal occlusion was absent, a difference in morphology of anterior and posterior teeth was also evident that inevitably affects the nature of occlusal contacts.The ideal occlusion was not found in any of the patient’s investigation.

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Mohapatra, Mounabati, Priyanka Sarangi, and Sukanta Satapathy. "Supernumerary Teeth: A Literature Review." Indian Journal of Dental Education 10, no. 3 (2017): 173–77. http://dx.doi.org/10.21088/ijde.0974.6099.10317.4.

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Khawaja, Naveen, Ramesh Lal, Mujeeb Rehman, and Suneel Kumar Punjabi. "ENDODONTICS PROCEDURAL ERRORS." Professional Medical Journal 23, no. 12 (December 10, 2016): 1537–40. http://dx.doi.org/10.29309/tpmj/2016.23.12.1813.

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The rationale of this study was to assess the results of training endodontic topostgraduates. This study was assumed to evaluate the procedural quality of root canalobturation and occurrence of ritual errors in the root canal treatment cases performed bypostgraduates in the department of Operative Dentistry. Study Design: Cross sectional caseseries study. Setting: Department Operative Dentistry, Liaquat University of Medical HealthScience, Jamshoro. Period: May 2014 to Apr 2016. Methodology: Total two hundreds eightyeight cases were evaluated, out of which 144 were prepared using Pro-taper universal (Dentsply)rotary system and 144 were prepared using conventional hand file system. Each group of teethwas evaluated by radiograph for the occurrence or lacking of procedural errors i-e overfill, underfill, instrument separation. Results: Among 288 cases, out of 144 conventionally treated teeth58 (49%) had procedural errors. Whereas out of 144 teeth treated with Pro-taper next rotarysystem, 61 (51%) had technical errors. Most of errors seen in both groups but farthest wereoverfill. Chi square test showed P value > 0.05 (0.416) which illustrate an irrelevant relationshipamong the systems applied & the incidence of errors. Conclusion: There was variation amongoverfill & under fill prevalence of practical errors in both systems; nonetheless, there was adisparity in the nature of error produced. It is accomplished that even though rotary systems arenot as simple to use as formerly alleged.

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Flesch, Jeffrey M., Joy R. Lile, and Mary E. Arnold. "Choose Health Action Teens: A Review of a Teens as Teachers Nutritional Education Training Curriculum." Journal of Youth Development 11, no. 1 (December 15, 2016): 116–19. http://dx.doi.org/10.5195/jyd.2016.438.

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This review draws from published research related to the best practices for the utilization of teens as teachers to examine Choose Health Action Teens (CHAT), a teen’s as teachers (TAT) training curriculum. Research shows that there are various components necessary to build a high quality TAT program. Most of these components fall under four areas in which training is necessary for teens and adults: Teaching strategies, youth/child development, subject matter to be taught, and youth-adult partnerships. These four areas provide a framework to review the Choose Health Action Teens (CHAT) (Crosiar & Wolfe, 2013) teens as teachers training program curriculum.

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Fathima, Syeda Aafia. "Effect of Cariogens on Primary Teeth." Indian Journal of Dental Education 11, no. 4 (2018): 103–5. http://dx.doi.org/10.21088/ijde.0974.6099.11418.4.

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Feng, Xiao Ning. "Study on Numbers of Multi-Tooth Meshing Teeth Pairs for Involute Internal Gear Pairs with Small Tooth Number Difference." Advanced Materials Research 655-657 (January 2013): 578–85. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.578.

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This article has carried out systematic research on the multi-tooth meshing problem of involute internal gear pairs with small tooth number difference of normal gear. It firstly establishes the entity assembly model of internal gear pairs with precise tooth profile, then determines the number of multi-tooth meshing teeth pairs with finite element software and finally analyzes the main factors and reason affecting the number of meshing teeth pairs. In the range of tooth number of internal gear equal to 40-200, the conclusion is that when tooth number difference equal to 1 the number of effective meshing teeth pairs is 3-15,when tooth number difference equal to 5 the number of effective meshing teeth pairs is 3-11. The main factors affecting the number of meshing teeth pairs are tooth number and tooth number difference. The fewer tooth number is and the greater tooth number difference is, the fewer the number of meshing teeth pairs is. The reason is that when tooth number is obviously reduced or tooth number difference is obviously increased, the clearance of adjacent gear surface will be greatly increased, which will cause the decrease of the number of meshing teeth pairs. Within the normal value scope of modification coefficient difference of involute internal gear pairs with small tooth number difference, the influence of modification coefficient difference and modification coefficient is very small. When the torque increases, the number of effective contacting teech pairs will keep unchanged. The research in this article provides reference for the calculation of loading capacity of multi-tooth meshing of internal gear pairs with small tooth number difference of normal gear.

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Feng, Xiao Ning. "Study on Multi-Tooth Meshing Problem for Involute Internal Gear Pairs with Small Tooth Number Difference of Stub Gear." Advanced Materials Research 631-632 (January 2013): 971–77. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.971.

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This article has carried out systematic research on the multi-tooth meshing problem of involute internal gear pairs with small tooth number difference of stub gear. It firstly establishes the entity assembly model of internal gear pairs with precise tooth profile, then determines the number of multi-tooth meshing teeth pairs with finite element software and finally analyzes the main factors and reason affecting the number of meshing teeth pairs. In the range of tooth number of internal gear equal to 40-150, the conclusion is that when tooth number difference equal to 1 the number of effective meshing teeth pairs is 2-10,when tooth number difference equal to 5 the number of effective meshing teeth pairs is 2-8. The main factors affecting the number of meshing teeth pairs are tooth number and tooth number difference. The fewer tooth number is and the greater tooth number difference is, the fewer the number of meshing teeth pairs is. The reason is that when tooth number is obviously reduced or tooth number difference is obviously increased, the clearance of adjacent gear surface will be greatly increased, which will cause the decrease of the number of meshing teeth pairs. Within the normal value scope of modification coefficient difference of involute internal gear pairs with small tooth number difference, the influence of modification coefficient difference and modification coefficient is very small. When the torque increases, the number of effective contacting teech pairs will keep unchanged. The research in this article provides reference for the calculation of loading capacity of multi-tooth meshing of internal gear pairs with small tooth number difference of stub gear

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Sheikh, Md Abdul Hannan, Abdul Kader Shaikh, Kamrunnahar, and Sultana Parveen. "Management of Non-vital Maxillary Central Incisors with Open Apices by MTA Plugging." Journal of Bangladesh College of Physicians and Surgeons 35, no. 4 (November 30, 2017): 196–99. http://dx.doi.org/10.3329/jbcps.v35i4.34741.

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The major challenge of performing root canal treatment in an open apex pulp-less tooth is to obtain a good apical seal. An 11 year old boy was presented with pain in his upper anterior teeth. On clinical examination both the maxillary central incisors revealed slight discoloration and fracture of the crown. Radiographic evaluation revealed radiolucency and open apices of both central incisors. Apexification with MTA apical plug was carried out before obturation with gutta-percha and sealer and the treatment was completed within 3 consecutive appointments. In twelve months follow up both the teeth were clinically and radiographically asymptomatic and the healing of the apical area was continued. The positive clinical outcome may encourage the future use of mineral trioxide aggregate (MTA) as an apical plug material in case of non-vital open apex teeth.J Bangladesh Coll Phys Surg 2017; 35(4): 196-199

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Craig, G. G. "Teeth." Medical Journal of Australia 152, no. 8 (April 1990): 442. http://dx.doi.org/10.5694/j.1326-5377.1990.tb125280.x.

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McCabe, Victoria. "Teeth." College English 49, no. 7 (November 1987): 770. http://dx.doi.org/10.2307/377502.

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Witte, John. "Teeth." Iowa Review 46, no. 1 (March 2016): 157. http://dx.doi.org/10.17077/0021-065x.7711.

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DiPerna, Regina. "Teeth." Missouri Review 38, no. 3 (2015): 156–57. http://dx.doi.org/10.1353/mis.2015.0042.

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Soares, Christine. "Teeth." Scientific American 301, no. 3 (September 2009): 77. http://dx.doi.org/10.1038/scientificamerican0909-77a.

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Slowik, Mary. "Teeth." Iowa Review 37, no. 1 (April 2007): 124–41. http://dx.doi.org/10.17077/0021-065x.6582.

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Grine, Frederick E. "Teeth." Journal of Human Evolution 18, no. 1 (February 1989): 100–101. http://dx.doi.org/10.1016/0047-2484(89)90028-6.

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Pozur, T. P. "Computer-tomographic vestibular-tongue sizes of teeth in boys and girls with normal occlusion depending on face types." Biomedical and Biosocial Anthropology, no. 30 (March 29, 2018): 50–55. http://dx.doi.org/10.31393/bba30-2018-07.

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Research of computed-tomographic size of teeth in representatives with differenttypes of faces and physiological occlusion allows dentists to make the correct approach toorthodontic treatment of patients in the clinic of orthodontics, orthopedic dentistry andmaxillofacial surgery. The purpose of the work is to establish the limits of the percentilescope and the peculiarities of the computed-tomographic vestibular-tongue sizes of teethin young boys and girls with physiological bite, depending on the type of face. Primarycomputer-tomographic dimensions of the width of the crowns of teeth, the width of theteeth at the anatomical neck, the distance from the anatomical neck to the apex of the rootand the distance from the middle of the cutting edge to the apex of the root of the teeth inthe vestibular-tongue direction, as well as the cephalometric parameters of 44 boys and 50girls with normal occlusion close to the orthognathic bite received from the data bank of theresearch center of the National Pirogov Memorial Medical University, Vinnytsya. Face typewas determined using the Garson morphological index. The statistical processing of theobtained results was carried out using the statistical software package "Statistica 6.0" usingnon-parametric estimation methods. In boys and girls with physiological bite with differenttypes of face the boundaries of the percentile width of the crowns width, the width of theteeth at the level of the anatomical neck, the distance from the anatomical neck to theapex of the root and the distance from the middle of the cutting edge to the apex of the rootin the vestibular-tongue direction are determined. The analysis of gender differences inthe size of the teeth showed that all the indicators of the distance from the anatomical neckto the apex of the root and the distance from the middle of the cutting edge to the apex ofthe root of the corresponding teeth in the vestibular-tongue direction in young boys with abroad face are significantly higher than that of girls with a wide face; the vast majority of thesize of the width of the crowns of teeth and the width of the teeth at the level of theanatomical neck in the vestibular-tongue direction in the young boys with a broad face arealso significantly higher than that of girls with a wide face. Reliable or tendentious differencesin computed-tomographic sizes of the teeth in the vestibular-tongue direction betweengirls with a very wide and wide face are not established. The results broaden theunderstanding of the anatomical structure of permanent teeth in young boys and girls ofPodillia with a physiological bite with different types of faces, which will allow dentists toimprove the efficiency of treatment of defects in teeth and dentitions.

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Haba, Danisia, Yllka Decolli, Emilia Marciuc, and Ana Elena Sîrghe. "Teeth Impaction and Structural Teeth Anomalies." Seminars in Musculoskeletal Radiology 24, no. 05 (October 2020): 523–34. http://dx.doi.org/10.1055/s-0040-1709210.

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AbstractDentists and oral and maxillofacial radiologists have used periapical, occlusal, panoramic, and cephalometric radiographs for many years for diagnosing dental anomalies, especially before orthodontic or surgical treatment. Cone beam computed tomography was developed in recent years especially for the dental and maxillofacial region. Thus it has become the imaging modality of choice for many clinical situations, such as the assessment of dental impaction and structural teeth anomalies or other associated diseases and disorders (e.g., Gardner's syndrome, cleidocranial dysplasia). This article reviews different aspects of dental impaction and its possible effects on adjacent structures such as external root resorption, marginal bone loss, as well as describing structural dental anomalies. It provides a systematic analysis of their characteristic features and imaging findings for general radiologists to achieve a precise diagnosis and an optimal interpretation.

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Brown, Jennie. "From milk teeth to wisdom teeth." Dental Nursing 5, no. 3 (March 2009): 168–70. http://dx.doi.org/10.12968/denn.2009.5.3.39826.

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Wulansari, Indah, Maria Goreti Widiastuti, and Prihartiningsih Prihartiningsih. "AUTOTRANSPLANTASI GIGI-GIGI IMPAKSI INSISIVUS MAKSILA KANAN DISERTAI KISTA DENTIGEROUS DENGAN PENAMBAHAN GRAFT KOLAGEN KARBONAT APATIT." ODONTO : Dental Journal 5, no. 1 (July 7, 2018): 9. http://dx.doi.org/10.30659/odj.5.1.9-17.

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Background: Autotransplantation is a surgical movement to reposition teeththat have been erupted, partially erupted or not yet erupted from one place to another in the same individual, either on post-extraction sockets or artifcial sockets made by surgery. Dental folicle from impacted teeth may develope dentigerous cysts that will result in destruction of the jaw bone. There are many factors that inﬂuence the success of autotransplantation, one of which is adequate bone support.The purpose of this poster is to present the successful autotransplantation treatment of impacted right maxillary incisor teeth associated with dentigerous cyst and bone support replacement after cyst enucleation using a carbonate apatite collagen graft, GAMACHA®, at RSUP Dr. Sardjito.Case management: A 9-year-old girl, referred to the Oral and MaxillofacialSurgery Department of RSUP Dr. Sardjito with the complaint of right deciduous maxillary incisor persistence. Radiological examination showing persistent of 51 and 52 radices and impaction of teeth 11 and 12 in a horizontal position above radix 53. Also visible radiolucent image with a frm limit around the crown of 11 that supports the image of cyst. This patient performed cyst enucleation under general anesthesia, removal of impacted 11 and 21, followed by an artifcial socket drilling at the alveolar bone that could support all aspects of the root wall although only on the apical part of the tooth root for teeth 11 and 12 placement. Autotransplantation of teeth11 and 12 followed by the application of GAMACHA® and wire fxation, strengthen with acrylic splint.Conclusion: Two years follow up after surgery, patient have no complaintseither from aesthetic or functional and the result of clinical and radiologicalexamination did not found existence of any pathological abnormalities around teeth 11 and 12.

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Priyatama, Andhika, Poerwati Soetji Rahajoe, and Rahardjo Rahardjo. "Intrusi Berat dengan Keterlibatan Multipel Gigi Insisivus Maksila akibat Trauma pada Anak." Majalah Kedokteran Gigi Indonesia 20, no. 2 (December 1, 2015): 155. http://dx.doi.org/10.22146/majkedgiind.7677.

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Trauma gigi anak merupakan kasus yang sering dijumpai. Intrusi gigi merupakan salah satu akibat trauma berupa perpindahan gigi ke dalam soket alveolaris. Intrusi gigi permanen anak dengan pertumbuhan akar sempurna perlu segera ditangani untuk menghindari kerusakan permanen gigi dan jaringan pendukung. Reposisi secara bedah dipilih dengan pertimbangan kondisi umum, lama kejadian, keparahan dislokasi, kondisi mahkota dan pertumbuhan akar. Tujuan laporan ini adalah melaporkan keberhasilan pembedahan pada kasus fraktur dentoalveolar dengan multipel gigi intrusi. Seorang anak laki-laki berusia 10 tahun datang ke RSGM Prof. Soedomo dengan keluhan gigi masuk ke langit-langit setelah terjatuh kurang lebih 30 menit sebelum kedatangan. Keadaan umum baik, compos mentis, GCS 15, tanda vital normal, rasa sakit pada gigi atas (VAS = 7), tidak dicurigai cedera kepala atau trauma di tempat lain. Pemeriksaan klinis menunjukkan vulnus laceratum pada gingiva anterior maksila, empat gigi incisivus maksila (12,11, 21, 22) mengalami intrusi. Gigi insisivus sentral dan lateral kanan terlihat sepertiga mahkota, gigi insisivus sentral dan lateral kiri mahkota tidak tampak. Pemeriksaan radiografis menunjukkan intrusi gigi insisivus maksila dengan kedalaman lebih dari 7 milimeter, akar gigi telah tumbuh sempurna, dan tidak terdapat fraktur akar, fraktur mahkota maupun fraktur rahang. Tindakan yang dilakukan adalah reposisi gigi intrusi dan fiksasi interdental maksila. Perawatan bedah dan fiksasi interdental memberikan hasil yang sangat baik. Hasil kontrol pasca perawatan didapatkan oklusi normal, pasien mampu membuka dan menutup mulut tanpa ada gangguan, gigi-gigi intrusi dalam kondisi vital, mastikasi normal, dan estetika baik.Severe Traumatic Intrusions of Multiple Maxillary Incisors In Children. Dental trauma is one of the most common traumas during childhood. The report will discuss about a treatment of multiple severe traumatically intruded maxillary incisors in children. A 10-year-old boy came to Prof. Soedomo Dental Hospital with a complaint of teeth intrusion after having accident in school thirty minutes before. The patient was in good general condition, compos mentis, the GCS score was 15, vital sign was normal, pain on anterior maxillary teeth (VAS was 7), no head injury or other traumas. The clinical examination showed that there was vulnus laceratum on maxillary gingival, and intrusion of the four maxillary incisors (12, 11, 21, 22). Only one-third crown of the right maxillary incisors was visible, meanwhile, the crowns of the left maxillary incisors were totally invisible. The supporting radiographic examination showed that the four maxillary incisors was apically intruded with more than seven millimeters in depth. The teeth’s root were well-developed (complete root formation), no fractures of the teeth’s root, crown, and the jaw. The patient underwent intruded teeth repositioning surgical treatment and maxillary inter dental fixation. Clinical evaluation (1 month and 2 months) after the treatments showed that the occlusion was achieved as the same as before the trauma. The patient was able to open and close the mouth normally without functional impairments. Furthermore, the intruded teeth were in a vital condition, no mastication pain, and with a good aesthetics.

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Ishii, Kazuo, Yoshinobu Maeda, Shigeru Idoji, Motofumi Sogo, Takao Mori, Masatoshi Okada, Takashi Nokubi, Yoshihiko Okuno, and Sadami Tsutsumi. "Teeth arrangement of anterior artificial teeth. Part 1. Age and teeth exposure." Nihon Hotetsu Shika Gakkai Zasshi 34, no. 2 (1990): 402–7. http://dx.doi.org/10.2186/jjps.34.402.

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Mehdi, Kamel, and Ali Zghal. "Numerical Model for Prediction of Cutting Force in Peripheral Milling Process Including Thrust and Tangential Damping." Advanced Materials Research 223 (April 2011): 122–32. http://dx.doi.org/10.4028/www.scientific.net/amr.223.122.

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A numerical model for prediction of cutting force components in peripheral milling process, including the cutting process damping, is proposed. The cutting process damping creates two components (thrust and tangential) of a dynamic cutting force. The total force model is obtained through numerical integration of the local forces. The effects of tool parameters (diameter, helix angle, number of teeth) on process damping and cutting force distributions are discussed. It is shown that the average value of the process damping and the amplitude of the cutting force increase with increasing the tool diameter. On the other hand, when the tool helix angle increases the process damping increases and the cutting force decreases. The number of tool teeth’s has not an influence on the variation of the damping process and cutting force but an influence on the number of cycles of the periodic cutting process.

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Federika, Aprillia Sonya, Mandojo Rukmo, and Setyabudi Setyabudi. "Antibiofilm activity of flavonoid mangosteen pericarp extract against porphyromonas gingivalis bacteria." Conservative Dentistry Journal 10, no. 1 (June 25, 2020): 27. http://dx.doi.org/10.20473/cdj.v10i1.2020.27-30.

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Background. Necrosis teeth need a procedure called the root canal treatment to eliminate microorganisms in root canal, so the inflammation process did not continue to the periapical.One of the microbes that exist in thenecrosis teethis Porphyromonas gingivalis, that capable of forming biofilm because it has the ability to communicate with bacteria signaling (quorum sensing). It is necessary to discover another antibiofilm agent as an irrigation material in root canal preparation deriving from nature. Flavonoidmangosteen pericarp extract can disrupt acyl-homoserine lactones (AHLs) thus quorum sensing bacteria will be disrupted and causing permanent attachment and the establishment of colonies on the surface of the teeth any barrier. Purpose. The aim of this study found out the antibiofilmactivity of flavonoid mangosteen pericarp extract against Porphyromonas gingivalis bacteria. Method. This studyhasa laboratory experimental with post-test only group design. Porphyromonas gingivalis ATCC 33277 was diluted according to Mc. Farland standard 106CFU/ml in Tryptic Soy Broth (TSB) medium and inserted into microtitterplate flexible U bottom. Porphyromonas gingivalis was incubatedfor 6x24 hour and checked with a simple staining to see the formation of biofilm. Flavonoid mangosteen pericarp extract was added in various concentrations and OD (optical density) readings done with a wavelength of 595 nm. Result. Flavonoid mangosteen pericarp extractshowed a decrease of OD value from control in all concentrations.Conclusion.Flavonoid mangosteen pericarp extract has antibiofilm activity against Porphyromonas gingivalis bacteria.

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Janosi, Kinga Mária, Aurița Albu, Adriana Crăciun, and Diana Cerghizan. "Rehabilitation of the frontal teeth with palatal veneers by using T-Scan occlusal analysis - case report." Acta Stomatologica Marisiensis Journal 3, no. 1 (June 1, 2020): 282–88. http://dx.doi.org/10.2478/asmj-2020-0006.

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AbstractPathological tooth wear occurs in young patients. The rehabilitation of these teeth must be performed accurately, considering the occlusal relationships and the correct distribution of the masticatory forces. The therapeutic approach must be as minimally invasive as possible.In this case presentation, six palatal veneers were realized for the aesthetic and functional rehabilitation of a young patient’s upper frontal teeth. The restorations were made on refractory casts, from feldspathic ceramics, allowing a proper esthetic. The occlusal rehabilitation involves the mounting of the casts in a semi-adjustable articulator. The six veneers were adapted functionally by using the Bio-Art A7 Plus articulator. Due to the adhesive techniques and the existing interocclusal space at this level, the teeth’s preparation was limited to the enamel. The deep chamfer was placed equigingivally. During the try-in of the restorations, the esthetic evaluation was done. The adhesive technique was used to bond the veneers to the tooth surfaces. After the cementation, the esthetical results were evaluated. During the prosthodontic treatment, T-Scan III digital analysis was performed to detect occlusal problems, to establish the treatment directions, and to evaluate the results.Conclusions: The use of the adhesively bonded feldspathic palatal veneers allows a successful esthetic and functional rehabilitation. The digital occlusal analysis, realized using the T-Scan system, improves the prosthodontic treatment quality and durability.

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Journal articles on the topic 'Teeths'

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