Journal articles: 'Impression directe'

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Wee, Alvin G. "Comparison of impression materials for direct multi-implant impressions." Journal of Prosthetic Dentistry 83, no. 3 (March 2000): 323–31. http://dx.doi.org/10.1016/s0022-3913(00)70136-3.

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Selvaraj, Sunantha, Jayashree Mohan, Paul Simon, and Jayachandran Dorairaj. "Comparison of Accuracy of Direct Implant Impression Technique using Different Splinting Materials." International Journal of Prosthodontics and Restorative Dentistry 4, no. 3 (2014): 82–89. http://dx.doi.org/10.5005/jp-journals-10019-1112.

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ABSTRACT Introduction The accuracy of an impression remains critical factor in achieving passive fit of an implant framework. The accuracy of the master cast would depend on the type of impression material, the implant impression technique and accuracy of die material. The different impression techniques advocated in the literature for implant impressions include direct (open tray) and indirect (closed tray) techniques. Direct technique use square impression copings that are picked up in the impressions which were used in this study. Objective To evaluate the accuracy of direct impression made with resin splinted and bis-GMA splinted open-tray impression coping. Thus to compare the accuracy of impressions obtained using different splinting materials. Materials and Methods A wax mandibular reference model was fabricated and four implants were placed in the mandibular anterior region using surveyor and acrylized with clear heat cure acrylic resin using injection molding technique. Spaced primary cast was fabricated with a uniform thickness of space about 2 mm. Ten custom trays were fabricated using the light curable resin sheets. Medium body polyether impression material was used. Pentamix was used to get a uniform mix. These trays were randomly divided among the two groups, with five trays in each group. Impression techniques were divided into two groups namely: Group A - direct impression technique with open tray impression copings splinted with autopolymerizing acrylic resin (GC pattern resin), group B - direct impression technique with open tray impression copings splinted with Protemp TM4 (bis- GMA) syringable temporisation material. Thus, final impressions were made. Total of 10 master casts were fabricated. Evaluation of casts using Dynascope-Vision engineering, Tesa Microhite 2D and coordinate measuring machine were used. Results Statistical comparisons were made using ANOVA test and post-hoc test. Same amount of deviation values obtained with resin splinted and bis-GMA splinted impression copings. The difference in the values might be because of the variation in the rigidity of the materials used. Conclusion Both the splinting material exhibit similar accuracy in impression, so bis-GMA can be used, which is easy to handle, less time consuming, less technique sensitive, rigid and readily available material in clinics, instead of resin splinted material which is technique sensitive, more time consuming and cumbersome. How to cite this article Selvaraj S, Mohan J, Simon P, Dorairaj J. Comparison of Accuracy of Direct Implant Impression Technique using Different Splinting Materials. Int J Prosthodont Restor Dent 2014;4(3):82-89.

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Pujari, Malesh, Pooja Garg, and D. R. Prithviraj. "Evaluation of Accuracy of Casts of Multiple Internal Connection Implant Prosthesis Obtained From Different Impression Materials and Techniques: An In Vitro Study." Journal of Oral Implantology 40, no. 2 (April 1, 2014): 137–45. http://dx.doi.org/10.1563/aaid-joi-d-10-00207.

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Movement of impression copings inside the impression material using a direct (open tray) impression technique during clinical and laboratory phases may cause inaccuracy in transferring the 3-dimensional spatial orientation of implants intraorally to the cast. Consequently, the prosthesis may require corrective procedures. This in vitro study evaluated the accuracy of 3 different impression techniques using polyether and vinyl polysiloxane (VPS) impression material to obtain a precise cast for multiple internal connection implants. A reference acrylic resin model with 4 internal connection implants was fabricated. Impressions of the reference model were made using 3 different techniques and 2 different impression materials. The study consisted of 24 specimens divided into 6 groups of 4 each. Impressions were poured with ADA type IV stone (Kalrock, Kalabhai Karson Pvt Ltd, Mumbai, India). All casts were evaluated for the positional accuracy (mm) of the implant replica heads using a profile projector. These measurements were compared to the measurements calculated on the reference resin model, which served as a control. Data were analyzed with 2-way analysis of variance (ANOVA) followed by Bonferroni multiple comparison procedures to evaluate group means. The results revealed significant difference for anterior implant distance between the 2 impression materials (P < .01) and also among the 3 different techniques (P < .05). The lowest mean variation was found with the polyether impression material and the splinted technique. For posterior implants, the results suggested no significant difference between the 2 impression materials (P ≥ .05). Although results were not statistically significant, the polyether impression material showed the lowest mean variation as compared to the VPS impression material. However, there was a significant difference among the 3 different techniques (P < .05). Among the 3 different techniques, the lowest mean variation between 2 posterior implants was found in the splinted technique. Casts obtained from impression techniques using square impression copings splinted together with autopolymerizing acrylic resin prior to the impression procedure were more accurate than casts obtained from impressions with nonmodified implant impression copings and with airborne particle–abraded, adhesive-coated copings. Casts obtained from polyether impression material were more accurate than casts obtained from vinyl polysiloxane impression material.

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Sfondrini, Maria Francesca, Paola Gandini, Maurizio Malfatto, Francesco Di Corato, Federico Trovati, and Andrea Scribante. "Computerized Casts for Orthodontic Purpose Using Powder-Free Intraoral Scanners: Accuracy, Execution Time, and Patient Feedback." BioMed Research International 2018 (2018): 1–8. http://dx.doi.org/10.1155/2018/4103232.

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Introduction. Intraoral scanners allow direct images of oral situation, with fewer steps than conventional impressions. The purpose of this study was to compare the accuracy of digital impressions, traditional impressions, and digitalization of full-arch gypsum models, to evaluate timing of different methods and finally to study perception of patients about conventional and digital impression techniques. Methods. Dental arches of fourteen patients were evaluated by alginate impression, titanium dioxide powder-free intraoral scanning (Trios, 3Shape), and digitalization obtained from gypsum models using the same scanner. Conventional and digital techniques were evaluated through measurements (lower and upper arch anteroposterior length, lower and upper intercanine distance, and lower and upper intermolar distance) with a caliber for analogic models and using a computer software for digital models (Ortho Analyzer, Great Lakes Orthodontics). In addition, chairside and processing times were recorded. Finally, each patient completed a VAS questionnaire to evaluate comfort. Statistical analyses were performed with ANOVA and Tukey tests for accuracy measurements and paired t-test for times and VAS scores. Significance was predetermined at P<0.05. Results. The measurements obtained with intraoral scanning, gypsum models after conventional impression, and digitalized gypsum models were not significantly different. Both chairside and processing times of digital scanning were shorter than the traditional method. VAS reporting patients comfort were significantly higher when evaluating digital impression. Conclusions. Intraoral scanners used for orthodontic applications provide useful data in clinical practice, comparable to conventional impression. This technology is more time efficient than traditional impression and comfortable for patients. Further evolution with more accurate and faster scanners could in future replace traditional impression methods.

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Alikhasi, Marzieh, Hakimeh Siadat, Abbas Monzavi, and Fatemeh Momen-Heravi. "Three-Dimensional Accuracy of Implant and Abutment Level Impression Techniques: Effect on Marginal Discrepancy." Journal of Oral Implantology 37, no. 6 (December 1, 2011): 649–57. http://dx.doi.org/10.1563/aaid-joi-d-09-00112.1.

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Impression techniques should precisely represent the 3-dimensional status of implants to allow for the fabrication of passively fitting prostheses and subsequently the elimination of strain on supporting implant components and surrounding bone. The aim of this study was to compare the accuracy of an abutment level impression method with that of an implant level (direct and indirect) impression method using polyether impression material to obtain precise definitive casts and prostheses. A reference acrylic resin dentoform with 2 internal connection implants (Implantium) was made. A total of 21 medium-consistency polyether impressions of the dentoform, including 7 direct implant level, 7 indirect implant level, and 7 abutment level (after 2 straight abutments were secured), were made. Impressions were poured with American Dental Association (ADA) type IV stone, and the positional accuracy of the implant replica heads and abutment analogs in each dimension of x-, y-, and z-axes, as well as angular displacement (Δθ), was evaluated using a coordinate measuring machine. Noble alloy 3-unit castings were fabricated and seated on the abutments in 3 groups; marginal discrepancies were measured at 4 points between prostheses and abutments. Data were analyzed using Mann-Whitney U test, 1-way analysis of variance (ANOVA), and Kruskal-Wallis tests. In comparisons of different impression techniques, only significant statistical Δθ differences were noted between the abutment level method and other techniques (P < .001). Results of this study reveal that although the implant level impression method could better transfer the angular position of the implants (Δθ), the impression method could not affect Δy, Δx, and Δz coordinates of the implants or marginal discrepancy of the 3-unit fixed partial dentures (FPD).

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Wangchuk, Norbu Penden, Pornrachanee Sawaengkit, Passiri Nisalak, Sroisiri Thaweboon, and Boonyanit Thaweboon. "Antimicrobial Properties of Ag Nanoparticle-Incorporated Irreversible Hydrocolloid Impression Material." Materials Science Forum 909 (November 2017): 187–92. http://dx.doi.org/10.4028/www.scientific.net/msf.909.187.

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Irreversible hydrocolloid impressions are easily contaminated with saliva and blood that are potentially capable of cross-infection. Disinfection with addition of Silver (Ag) nanoparticles into the impression material has been explored recently. This research aims to evaluate the in-vitro efficacy of Ag nanoparticle-incorporated irreversible hydrocolloid impression material. Ag nanoparticles (AgZrPO4, National Direct Network Company, Thailand) at concentrations of 0.50%, 1.00% and 1.50% w/w were added to powder of impression material (Kromopan, Lascod, Italy). Impression material samples were prepared on sterile plate in accordance with manufacturer’s instruction. After setting, a 100 microliter of P. aeruginosa ATCC 6538 and C. albicans ATCC 13803 suspension (106 cells/mL) were inoculated on the surface of the impression sample and left for 10 minutes. The amount of the P. aeruginosa and C. albicans on the surface was quantified using imprint technique on the individual culture media respectively. Impression materials incorporated with AgZrPO4 showed antimicrobial property against microbes compared with control (impression material without AgZrPO4). This beneficial effect can be used to reduce cross contamination. However, further investigations are required to study the physical properties of the Ag nanoparticle-incorporated impression material.

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Rapone, Biagio, Cosimo Palmisano, Elisabetta Ferrara, Daniela Di Venere, Giovanni Albanese, and Massimo Corsalini. "The Accuracy of Three Intraoral Scanners in the Oral Environment with and without Saliva: A Comparative Study." Applied Sciences 10, no. 21 (November 2, 2020): 7762. http://dx.doi.org/10.3390/app10217762.

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Background: with the emergence of technological innovations in the dental industry, one emerging trend has been the intraoral digitizing of patients by using intraoral scanning systems. Compared to taking conventional impressions, the use of intraoral scanners (IOS) is suitable for capturing direct optical impressions, helping to improve diagnostic efficacy, save time, reduce patient discomfort, and simplify clinical procedures. Intraoral scanning systems appear to have a high potential for providing guidance on proper standards of care. However, one main disadvantage is breathing and saliva secretion, which causes deviations, interfering with the applicability and accuracy of the optical impression. The aim of this study was to compare the validity and accuracy of three commercially available intraoral scanners, performing an analysis exploiting a wet model. Methods: an in vitro experimental study of four permanent teeth (two molars and two premolars) on the accuracy of copings obtained by subgingival preparations was performed, using an oral wet environment model. Two hundred and forty digital impressions were produced from three digital scanners using four samples. Descriptive analysis was performed using mean, standard deviation, and median. ANOVA and F-tests were performed to assess the amount of variability between the groups. For statistical analysis a 95% significance level was chosen. Results: all differences between groups were statistically significant. Conclusions: the present data implicate a huge impact of the oral biological fluids on the accuracy of digital impression to corresponding images, implying a failure of accurate impression under wetness conditions.

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Kannan, Sheela, Chalakuzhiyil Abraham Mathew, and Roseline Savarimuthu Paulraj. "INTRAORAL SCANNING SYSTEMS - A CURRENT OVERVIEW." International Journal of Advanced Research 8, no. 10 (October 31, 2020): 1214–23. http://dx.doi.org/10.21474/ijar01/11956.

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Intraoral scanners (IOSs) are devices used for capturing direct optical impressions in dentistry. IOS eliminates the errors that are encountered with the conventional impression making procedures. The last decade has seen an increasing number of optical IOS devices, and these are based on different technologies. The objective of this review article is to discuss intraoral scanners with regards to its technology, generation systems, scanning paths, necessity of a powdering medium, accuracy (Trueness and precision), intermaxillary relationship registration, commercially available IOS, clinical recommendations, advantages, disadvantages, indications and contraindications. Digital impressions with IOS is likely going to be a routine procedure in dentistry in the near future.

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Arieli, Adi, Maram Adawi, Mahmoud Masri, Evgeny Weinberg, Ilan Beitlitum, Raphael Pilo, and Shifra Levartovsky. "The Accuracy of Open-Tray vs. Snap on Impression Techniques in A 6-Implant Model: An In Vitro 3D Study." Materials 15, no. 6 (March 12, 2022): 2103. http://dx.doi.org/10.3390/ma15062103.

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To compare the three-dimensional accuracy of an open-tray and two snap on impression techniques (with and without connecting the plastic caps of the snap on impression transfers) in a full arch 6-implant model, a reference acrylic resin model of the maxilla with six implants was fabricated. Prominent geometrical triangles, in the palate area, served as reference points for a digital overlap between scans. Three impression transfer techniques were evaluated and compared: open-tray direct impression (DI), snap on impression (SpO), and connected snap on impression (SpOC). Polyether impression material was used to make 30 impressions (n = 10), and the master model and all casts were digitally scanned with a laboratory optical scanner. The obtained 3D data were converted and recorded as STL files, which were imported to a 3D inspection software program. Angular deviations (buccal, occlusal and interproximal planes) between the study casts and the reference model were measured. Data were analyzed using one-way analysis of variance (ANOVA) and Tukey post hoc test, with 0.05 used as the level of significance. The 3D angular deviations from the master model revealed no significant differences between the DI and SpO impression groups, but there were significant differences in the SpOC impression group, particularly in the buccal and occlusal planes. In all groups, the 3D angular deviation between the most distal scan abutments on each side of the model was significantly different from all other areas when compared to the master model. Within the limits of this study, it is possible to conclude that the indirect closed tray snap on impression technique with unconnected plastic caps exhibited the same three-dimensional accuracies as the direct open tray technique. The indirect closed tray snap on impression technique with connected plastic caps was less accurate than either the indirect closed tray snap on impression technique with unconnected plastic caps or the direct open tray technique. In the case of full arch implant supported prostheses, inaccuracies may be expected in the most distal implants for all the three impression techniques evaluated in this study. Further in vitro and in vivo research is required.

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Hassan, Nurul Huda, BudiAslinie Md. Sabri, and Mohamed Ibrahim Abu Hassan. "Accuracy of In-Vivo Digital Impressions of Complete Arch with Intraoral Scanner Vs Conventional Impression - A Review." Journal of Evolution of Medical and Dental Sciences 11, no. 1 (January 31, 2022): 283–92. http://dx.doi.org/10.14260/jemds/2022/53.

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BACKGROUND We intend to evaluate the accuracy of in vivo conventional and digital methods in generating complete-arch dental models for measuring tooth dimension. METHODS Search was conducted through an electronic database in Medline, Cochrane Library, ResearchGate, PubMed and Google Scholar using query terms such as intraoral scanning; digital impression; accuracy in vivo full arch digital impression; analog impression; accuracy conventional impression; in vivo intraoral scanning; alginate impression; accuracy of plaster models; digital models; and complete arch accuracy. The outcomes were the accuracy of teeth dimension measurements in plaster models in comparison to digitized and digital models in vivo. RESULTS Nine studies matched the inclusion criteria. Two papers compared teeth measurements through plaster models and direct digital models, four papers compared plaster models and digitized models, one paper compared plaster models, digitized and direct digital models, one paper compared four different methods of direct intraoral, plaster models, direct digital and digitized models and one study reported teeth measurements from directly measured intraoral, plaster models, and direct digital models. Neither digital nor plaster models could be considered to replicate exactly the dentition, however it was agreed by the authors that intraoral scanning could represent the intraoral situation more accurately on digital models due to the lesser procedural steps, hence fewer source of error. CONCLUSIONS According to the results of the present review, although there were slight differences in readings of the measurements made on all the methods, the differences were neither statistically nor clinically significant and it is acceptable in clinical application. This review was registered in PROSPERO at CRD42020208662. KEY WORDS Intraoral Scanning, Digital Impression, Analog Impression, Digitized Model, Digital Model, Digital Impression Accuracy, Stl files, Conventional Impression Accuracy, Tooth Dimension Accuracy, Digital Model Accuracy

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Sato, Taku, and Yoshiaki Nihei. "Contrasting tactics in deceptive impression management." Social Behavior and Personality: an international journal 37, no. 2 (March 31, 2009): 267–71. http://dx.doi.org/10.2224/sbp.2009.37.2.267.

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The deceptive tactics used to manipulate impressions people gave to others of themselves and other individuals were investigated. In the first phase, all participants told about the most memorable event that happened yesterday. In the second phase, one group of participants in the self-aggrandizement condition were asked to distort the original statement to give the impression that they were competent or socially desirable. Another group of participants assigned to the other-belittlement condition were asked to distort the original statement to give an impression that other individuals in the original telling were incompetent or socially undesirable. The results show that participants in both conditions used two deceptive tactics. One is a direct tactic, which is a direct manipulation of the target's evaluation. The other is an indirect tactic, which is indirect manipulation of the target's evaluation by contrasting with a nontarget person.

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GORDIUCHYK, E. G., and К. O. KOSTETSKA. "THEORETICAL PRINCIPLES OF FORMATION OF EXPERIENCE ECONOMY IN THE CONTEXT OF GENERAL GROWTH." Economic innovations 21, no. 4(73) (December 20, 2019): 46–56. http://dx.doi.org/10.31520/ei.2019.21.4(73).46-56.

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Topicality. In today's socio-economic development, companies are finding the way to find new ways to increase their competitiveness. Also, in view of the global development trends and the latest documents, the socio-economic elements are becoming more and more relevant, which give a new experience to the person and provide an increase in quality of life parameters. Formation of modern trends and the transition to a new type of management, characterized by the increasing importance for a person to gain a special impression (experience) in the acquisition of a particular product or service, through the use of material or intangible production. Price competition changes weight, because a person is ready to spend big money to gain special experience, incl. from natural diversity. Therefore, the economy of impressions / experience, which is focused on consumer sensations and reflects the latest processes and phenomena of the post-industrial stage of development of society, is becoming increasingly relevant. Aim and tasks. The purpose of the article is to determine the theoretical basis for shaping the situation of the experience economy in light of the world trends and goals of the Millennium Development, defined in international documents. Research results. Taking into account the current trends of world development, the experience economy should become a component of inclusive growth on the basis of harmonization of interaction between society and the natural environment, social inclusion. Such guidelines can also be noted as key in the document Basic Principles of State Environmental Policy of Ukraine until 2030. At present, there is a mismatch between state legislative documents and regional development strategies. There is no clear detail of actions at the level of regional development plans. Thus it is necessary to distinguish priority directions of development of the economy of impressions in the structure of development of territories taking into account its functional features (recreational tourism, industrial, agricultural) and introduction of ecosystem approach for all directions of socio-economic development. To this end, it is necessary to highlight the basic principles of the economy of experience, taking into account the basic principles of sustainable development adopted at the UN Conference on Environment and Development.Conclusion. The study identified the origins and prerequisites of forming an impression economy. The author defined the essence of the notion of impression as a component of the impression economy, investigated existing approaches to determining the category of impression economy, analyzed the global trends in the development of the economy in terms of impressions, substantiated the use of natural resources to obtain positive impressions and improve quality of life. According to the authors, modeling the preconditions for the development of the economy of impressions can be understood as ensuring the health and socio-aesthetic development of man, the inclusion of society, the introduction of ecosystem approach that will promote inclusive growth and conservation of its natural resource potential. All kinds of natural resources (mineral, climatic, aquatic, land, forest, recreational, etc.) have a direct influence on forming an impression in the process of consuming the service and in the perception of the quality of life of a person. Therefore, it can be stated that natural resources are an essential component of the impression economy.

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Hallier Willi, Christine, Bang Nguyen, T. C. Melewar, Suraksha Gupta, and Xiaoyu Yu. "Localization of computer-mediated communication and corporate impression on online communities." Internet Research 29, no. 4 (August 5, 2019): 940–69. http://dx.doi.org/10.1108/intr-05-2016-0126.

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Purpose The purpose of this paper is to investigate the importance of localizing online communities (OCs) and examines how OC members form impressions of organizations that use OCs in their communication activities. A conceptual framework and measurement scale are developed that consist of complex latent constructs. Design/methodology/approach A sequential multi-method approach is adopted with both qualitative and quantitative investigations. Using Structural equation modeling, the research refines and validates the measurement scales of impression formation in OCs. Findings Findings reveal that comprehensive messages have a direct effect on the impressions that an OC member forms. In particular, social context cues are an important predictor of online community corporate impression (OCCIP). Source credibility, affiliation, characteristics and interpersonal communication are all critical to OCCIP, which in turn, influence members’ attitudes toward the company and the intention to use it again. Surprisingly, relevance, timeliness, accuracy and perceived similarity did not have any significant effect on the corporate impression. Originality/value Three contributions are offered: First, the study provides reliable scales for measuring OCCIP. Second, support is given to the conceptual model that links OCCIP to a set of consequences, namely, attitudes toward the company, intention to use the company, and word-of-mouth. Finally, the study is conducted across two different and unique types of OC contexts, stipulating further insights into the localization of OCs.

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Gogushev, K., M. Abadzhiev, and Z. Valcheva,. "COMPARISON OF ACCURACY OF THREE-UNIT ZIRCONIA FIXED PARTIAL DENTURES MADE FROM CONVENTIONAL AND DIGITAL IMPRESSIONS – IN VITRO STUDY." EurasianUnionScientists 2, no. 3(84) (April 15, 2021): 11–17. http://dx.doi.org/10.31618/esu.2413-9335.2021.2.84.1278.

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ABSTRACT INTRODUCTION: Nowadays, the improvement of intraoral scanning systems aims to overcome some limitations of the conventional methods and to eliminate the mistakes that can be made during the production technology and to achieve a more precise design of prosthetic restorations [7]. AIM: The aim of the present study is to evaluate and compare the marginal adaptation and the internal fit of zirconium dioxide fixed partial dentures, made by direct and indirect digital approach. MATERIALS AND METHODS: To perform the in vitro study, a model-sample of the upper jaw was used, on which two artificial plastic teeth 24 and 26 were prepared and tooth 25 was removed. 30 virtual models were created from the prepared model. To obtain the virtual models in the first group (CIS group), 10 conventional impressions (n = 10) were taken with additive silicone impression material using a two-stage two-phase impression technique with a standard metal impression tray. For the second group (PCS group) the conventional impressions were casted wtih IV class high quality hard plaster. The ten digital impressions from the third group (ISG group) were obtained using an intraoral TRIOS scanner. RESULTS: The highest mean value in P1 was measured in the CIS group (155.1 ± 69.96 µm), followed by the PCS group (135.62 ± 78.7 µm). The highest mean value in P2 was obtained in the CIS group (138.32 ± 63.08 µm), followed by the ISG group (117.2 ± 32.48 µm). The highest mean value in point P3 was found in the CIS group (94.525 ± 23.03 µm), while the highest mean value in point P4 was measured in the PCS group (86.34 ± 26.99 µm). CONCLUSION: The obtained mean values regarding the marginal adaptation in all studied groups are within the clinically acceptable range. The highest values in terms of the marginal adaptation indicator were obtained in the PCS group, and the lowest - in the ISG group.

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Britt, Lory, and David R. Heise. "Impressions of Self-Directed Action." Social Psychology Quarterly 55, no. 4 (December 1992): 335. http://dx.doi.org/10.2307/2786951.

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Alikhasi, Marzieh, Hakime Siadat, Alireza Nasirpour, and Mahya Hasanzade. "Three-Dimensional Accuracy of Digital Impression versus Conventional Method: Effect of Implant Angulation and Connection Type." International Journal of Dentistry 2018 (June 4, 2018): 1–9. http://dx.doi.org/10.1155/2018/3761750.

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Purpose. The aim of this in vitro study was to compare the accuracy of different implant impression techniques of the maxillary full arch with tilted implants of two connection types. Materials and Methods. Two maxillary edentulous acrylic resin models with two different implant connections (internal or external) served as a reference model. Each model had two anterior straight and two posterior angulated implants. Ninety impressions were made using an intraoral scanner (Trios 3Shape) with scan bodies for digital impression (groups DII and DIE), a custom open tray with additional silicone for the conventional direct group (groups CDI and CDE), and a custom closed tray with additional silicone for the conventional indirect group (groups CII and CIE) from both internal and external models, respectively. A coordinate-measuring machine (CMM) was used to measure linear and angular displacement for conventional specimens. For digital groups, an optical CMM was used to scan the reference model. STL data sets from the digital specimen were superimposed on STL reference data sets to assess angular and linear deviations. Data were analyzed with three-way ANOVA and t-test at α=0.05. Results. There were significant angular and linear distortion differences among three impression groups (P<0.001), angular distortion differences between internal and external connections (P<0.001), and between straight and tilted implants for either linear (P<0.001) or angular (P=0.002) distortion. The type of the connection and implant angle did not have any effect on linear and angular distortion of the digital technique (p>0.05). Minimum angular and linear distortion was seen for tilted implants in DII and DIE groups (0.36° ± 0.37 and 0.16 ± 0.1 mm). Conclusion. Impression techniques (digital versus conventional) affected the transfer accuracy. Digital techniques demonstrated superior outcome in comparison with conventional methods, and the direct technique was better than the indirect conventional technique. Connection type and implant angulation were other factors that influenced accuracy. However, when digital impression was applied, accuracy was not affected by the type of connection and angulation.

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Haje, Emad El. "Direct impression coping for an implant system." Journal of Prosthetic Dentistry 74, no. 4 (October 1995): 434–35. http://dx.doi.org/10.1016/s0022-3913(05)80389-0.

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ElNaghy, Rahma, Sara A. Amin, and Majd Hasanin. "Evaluating the accuracy of intraoral direct digital impressions in 2 infants with unilateral cleft lip and palate compared with digitized conventional impression." American Journal of Orthodontics and Dentofacial Orthopedics 162, no. 3 (September 2022): 403–9. http://dx.doi.org/10.1016/j.ajodo.2021.09.015.

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Lykina, Vira, and Serhiy Potapenko. "Rhetoric of direct and indirect notation of concepts: the procedure of transformation of an idea into an effect." Revista Amazonia Investiga 11, no. 50 (March 10, 2022): 152–60. http://dx.doi.org/10.34069/ai/2022.50.02.15.

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The paper dwells on the textual ways direct and indirect references to concepts transform into particular effects. The topicality of the publication is brought about by the necessity to study the impact on the audience achieved by verbal formation of particular impressions. The goal of the article is to reveal how the direct reference to the democracy concept or its absence creates the desired effect in the inaugurals by American Presidents Obama and Biden. The paper applies the rhetorical methodology of idea-turned-impression to explain the way the concept named in the beginning of a speech transforms into a particular effect meant to influence the audience. It is found that the indirect reference to the democracy concept is implemented by the units of two groups: basic-level, indicating the people and the government, and axiological, naming freedom, equality, unity etc. The direct reference by the noun ‘democracy’ performs compositional and persuasive – existential and metaphorical – functions. The methodology of the article includes methods of analysis and synthesis, as well as special methods of knowledge, which are typical for philology.

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Auroy, Pascal, Emanuel Nicolas, and Yvan Bedouin. "Torque resistance of impression copings after direct implant impression: An in vitro evaluation of impression materials with and without adhesive." Journal of Prosthetic Dentistry 117, no. 1 (January 2017): 73–80. http://dx.doi.org/10.1016/j.prosdent.2016.05.002.

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Gilmore, Jim. "Use of Vicryl Mesh in Prevention of Postrhinoplasty Dorsal Irregularities." American Journal of Cosmetic Surgery 11, no. 3 (September 1994): 171–73. http://dx.doi.org/10.1177/074880689401100303.

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Small, palpable, and visible dorsal irregularities may occur in as many as 5–10% of rhinoplasties. They can be unacceptable to both the surgeon and patient and can lead to unwanted secondary surgery. In 88 patients treated over an 18-month period, VICRYL mesh implants consisting of one to three layers of VICRYL were placed under direct vision over the dorsal cartilage; care was taken to avoid disturbing any cartilage implants. Early results were impressive; there was an absence of palpable dorsal irregularities. This report describes the surgical technique and impressions during the 18-month period.

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Singh, Kunwarjeet. "Modified Direct Transfer Coping Technique for Making Impression of Closely Placed Implants." Journal of Dentistry And Oral Implants 2, no. 2 (August 19, 2019): 18–22. http://dx.doi.org/10.14302/issn.2473-1005.jdoi-19-2908.

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The main purpose of the impression is to record and transfer the relationship between implants and to reproduce this relationship as accurately as possible. But, Unplanned placement of the implants may result in close approximation of the implants, thereby posing tough challenge to the restorative dentist, to first accurately record the impression and later on fabricate the prosthesis with satisfactory esthetics and function. This article presents a modified direct impression coping procedure for precise making of impression of closely placed implants which otherwise may be difficult to replicate the exact position of the implants by conventional direct or indirect technique.

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URAL, Çağrı, and Necati KALELİ. "Direct Digitalization Devices in Today’s Dental Practice: Intra Oral Scanners." Journal of Experimental and Clinical Medicine 38, SI-2 (May 19, 2021): 136–42. http://dx.doi.org/10.52142/omujecm.38.si.dent.10.

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Rapidly developing technologies and new changes in modern dentistry have led to more effective solutions to be used in our clinical practice. The digital workflow includes some steps, such as data acquisition, digitalization, designing, and subsequently manufacturing by using digital devices. In this process, acquiring the images from patients mouth, which is named computer-aided impression (CAI), is the first step of the digital workflow and named as digitalization. The need to skip many time-consuming intermediate steps and reduce the possibility of fabrication errors has made the digital workflow a popular choice for dentists and dental technicians. The popularity of intraoral scanners has increased rapidly since the 1980s. With the development of camera systems and software engineering, many companies have presented many different IOS devices, which are based on different software systems. This situation causes dentists to get confused due to the formation of a very large data cluster. IOS devices are used to capture the digital data and they are an effective alternative to conventional impressions in many ways, such as increased patient comfort, time efficiency, hygiene, predictability, and precise results. Clinicians should have enough technical information about the IOS they use to obtain optimal results in fabricated restorations. The aim of this review is to evaluate the scanning technologies of intraoral scanners, their advantages and disadvantages in clinical practice, scanning strategies, accuracy of scanning processes, and software protocols.

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Mańka-Malara, Katarzyna, Dominika Gawlak, Robert Łojszczyk, Maciej Trzaskowski, and Elżbieta Mierzwińska-Nastalska. "Direct modelling of mouthguard pattern using modified impression tray." Prosthodontics 70, no. 1 (March 2, 2020): 23–32. http://dx.doi.org/10.5114/ps/116967.

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Lee, Ju-Hyoung, and In-Sook Park. "An extended guide pin for a direct implant impression." Journal of Prosthetic Dentistry 116, no. 5 (November 2016): 826–27. http://dx.doi.org/10.1016/j.prosdent.2016.03.011.

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Ward, Russell E. "Rituals, First Impressions, and the Opening Day Home Advantage." Sociology of Sport Journal 15, no. 3 (September 1998): 279–93. http://dx.doi.org/10.1123/ssj.15.3.279.

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Durkheim’s discussion on ritual and Goffman’s theoretical work on first impressions are used to predict superior performance among home teams on opening day. Information on opening day game outcomes is compiled and compared with the results of regular season and championship play. The analysis reveals a greater home advantage for teams playing in opening day games than for home teams competing in regular season or championship games. When controlling for the effect of stadium attendance on the home advantage, the opening day home advantage exceeds that of championship competition. The results suggest that ritual activity and concerns for first impression management may be factors that condition home team performance, offering support for the assertion that performance is partly a social product. Further home advantage research can direct attention to cross-cultural differences in the opening day home advantage and focus on qualitative data collection to supplement the current abundance of archival data.

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Prasetyo, Priambudi Dwi, and Ari Widyati Purwantiasning. "Kajian Konsep Arsitektur Maskulin Pada Bangunan Museum Guggenheim, Bilbao." Journal of Architectural Design and Development 2, no. 2 (December 16, 2021): 166. http://dx.doi.org/10.37253/jad.v2i2.5354.

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Architecture is closely related to masculine traits due to the intervention of experts in the modern era. Existence became greatly reduced because of the feminism movement in architecture that had taken the attention of activists of architectural practice. Therefore, to bring back insights on the concept of masculine architecture, this research was conducted. In this study, qualitative descriptives were used as a method, as was the concept of masculine architecture that was not expected to be measured through quantitative data. In this method is very focused on the literature data due to the current conditions that can not make a direct visit to the site of the case study. The preferred case study is the Guggenheim museum in Bilbao, Spain. In data collection of course refers to the principles of masculine architecture. These principles include natural impressions on elements, color selection, industrial-style ornaments, and the use of steel materials. Some of these principles are further identified in the architectural elements that are considered capable of displaying a masculine architectural impression on this Guggenheim museum building. The result of this identification proves that every principle of masculine architecture is able to be presented very well to the building elements of this Guggenheim museum. In addition, we also find about the implementation strategy that is considered optimal to bring the impression of masculine architecture to a museum building, while still presenting something innovative but still has its own characteristics.

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Chon, Hye Sook, Seon Kyung Lee, and Seung Bo Kim. "The accuracy of Colposcopic impression among patients undergoing directed biopsy." Korean Journal of Gynecologic Oncology and Colposcopy 13, no. 2 (2002): 116. http://dx.doi.org/10.3802/kjgoc.2002.13.2.116.

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Massad, L. S., Y. C. Collins, and H. E. Cejtin. "The Accuracy of Colposcopic Impression Among Women Undergoing Directed Biopsy." Journal of Lower Genital Tract Disease 3, no. 1 (January 1999): 57. http://dx.doi.org/10.1097/00128360-199901000-00058.

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Evangelisti, E., C. Monaco, N. Ragazzini, A. Llukacej, P. Baldissara, and R. Scotti. "Repeatability of dental impressions: Direct vs. indirect digitalization." Dental Materials 30 (2014): e94. http://dx.doi.org/10.1016/j.dental.2014.08.192.

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DENEHY, GERALD, and DEBORAH COBB. "Impression Matrix Technique for Cusp Replacement Using Direct Composite Resin." Journal of Esthetic and Restorative Dentistry 16, no. 4 (July 2004): 227–33. http://dx.doi.org/10.1111/j.1708-8240.2004.tb00040.x.

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Ritter, Andre V. "IMPRESSION MATRIX TECHNIQUE FOR CUSP REPLACEMENT USING DIRECT COMPOSITE RESIN." Journal of Esthetic and Restorative Dentistry 16, no. 4 (July 2004): 234. http://dx.doi.org/10.1111/j.1708-8240.2004.tb00041.x.

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Ren, Xi, Keunbada Son, and Kyu-Bok Lee. "Accuracy of Proximal and Occlusal Contacts of Single Implant Crowns Fabricated Using Different Digital Scan Methods: An In Vitro Study." Materials 14, no. 11 (May 26, 2021): 2843. http://dx.doi.org/10.3390/ma14112843.

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The purpose of this in vitro study was to compare the accuracy of the proximal and occlusal contacts of single implant crowns fabricated with four data capture methods. The resin models were mounted on an articulator, digitized using a laboratory scanner, and saved as a standard tessellation language (STL) file to serve as the master reference model (MRM). Two different intraoral scan body (ISB) systems were evaluated: polyetheretherketone (PEEK) short scan body (SSB) and PEEK long scan body (LSB) (n = 12). The digital impressions (SSB and LSB) were acquired using an intraoral scanner with ISB. Two different conventional techniques were also evaluated: PEEK short scan body with coping plastic cap (CPC) and pick-up coping (PUC) (n = 12). The implant impressions (CPC and PUC) were recorded using a conventional impression technique. The crown and abutment were fabricated with a milling machine and then placed on the resin model and scanned using a laboratory scanner. The scanned files were saved as STL files to serve as test datasets. The MRM and test datasets were superimposed, and the mesial, distal, and occlusal distances were calculated using a 3D inspection software and statistically analyzed using the Kruskal–Wallis H test (α = 0.05). The direct data capture group had more accurate contact points on the three surfaces, with mesial contact of 64.7 (12.8) µm followed by distal contact of 65.4 (15) µm and occlusal contact of 147 (35.8) µm in the SSB group, and mesial contact of 84.9 (22.6) µm followed by distal contact of 69.5 (19.2) µm and occlusal contact of 115.9 (27.7) µm in the LSB group (p < 0.001). The direct data capture groups are closer to the ideal proximal and occlusal contacts for single implant crowns than the indirect data capture groups. There was no difference in the accuracy between the two types of scan body (SSB and LSB).

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Wouters, F. R., C. Jon-And, N. Abramson, L. Olsson, L. Frithiof, P. Ö. Soder, and I. Dirtoft. "Measurement of Gingival Swelling from Dental Casts by Generation of a Moire Pattern with Laser Light." Journal of Dental Research 67, no. 8 (August 1988): 1118–21. http://dx.doi.org/10.1177/00220345880670081101.

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The aim of the study was to develop a sensitive measuring method enabling direct evaluation of gingival swelling to be made as registered on dental casts. On two separate occasions, when different degrees of severity of gingival inflammation were present in the same subject, reversible hydrocolloid impressions were taken of the mandible. The casts obtained were located successively in identical three-dimensional relationships in a field of interference fringes generated by two intersecting beams of collimated helium-neon laser light, and were photographed. The evaluation of the moiré pattern obtained directly by superimposition of the two images of the surface studied indicated that a decrease in gingival height of 0.38 mm in the direction of the camera had occurred between the two occasions. The use of a computer-based image-processing system considerably improved the visibility of the pattern. The reproducibility of the impression technique, as well as the relocation and superimposing techniques, proved satisfactory at the moiré resolution used (0.19 mm). The method has potential application in clinical experimental research, and therefore warrants further evaluation.

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Rothermich, Kathrin, Havan L. Harris, Kerry Sewell, and Susan C. Bobb. "Listener impressions of foreigner-directed speech: A systematic review." Speech Communication 112 (September 2019): 22–29. http://dx.doi.org/10.1016/j.specom.2019.07.002.

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Bobb, Susan C., Kristin Mello, Emily Turco, Larissa Lemes, Erika Fernandez, and Kathrin Rothermich. "Second Language Learners' Listener Impressions of Foreigner-Directed Speech." Journal of Speech, Language, and Hearing Research 62, no. 9 (September 20, 2019): 3135–48. http://dx.doi.org/10.1044/2019_jslhr-s-18-0392.

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Rajendran, Rohini, N. Chander, Kuttae Anitha, and Balasubramanian Muthukumar. "Dimensional accuracy of vinyl polyether and polyvinyl siloxane impression materials in direct implant impression technique for multiple dental implants." European Oral Research 55, no. 2 (May 27, 2021): 54–59. http://dx.doi.org/10.26650/eor.20210110.

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Tam, Jennifer, Anupma Wadhwa, Maria Athina Martimianakis, Oshan Fernando, and Glenn Regehr. "The role of previously undocumented data in the assessment of medical trainees in clinical competency committees." Perspectives on Medical Education 9, no. 5 (October 2020): 286–93. http://dx.doi.org/10.1007/s40037-020-00624-x.

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Abstract Introduction The clinical competency committee (CCC) comprises a group of clinical faculty tasked with assessing a medical trainee’s progress from multiple data sources. The use of previously undocumented data, or PUD, during CCC deliberations remains controversial. This study explored the use of previously undocumented data in conjunction with documented data in creating a meaningful assessment in a CCC. Methods An instrumental case study of a CCC that uses previously undocumented data was conducted. A single CCC meeting was observed, followed by semi-structured individual interviews with all CCC members (n = 7). Meeting and interview transcripts were analyzed iteratively. Results Documented data were perceived as limited by inaccurate or superficial data, but sometimes served as a starting point for invoking previously undocumented data. Previously undocumented data were introduced as summary impressions, contextualizing factors, personal anecdotes and, rarely, hearsay. The purpose was to raise a potential issue for discussion, enhance and elaborate an impression, or counter an impression. Various mechanisms allowed for the responsible use of previously undocumented data: embedding these data within a structured format; sharing relevant information without commenting beyond one’s scope of experience; clarifying allowable disclosure of personal contextual factors with the trainee pre-meeting; excluding previously undocumented data not widely agreed upon in decision-making; and expecting these data to have been provided as direct feedback to trainees pre-meeting. Discussion Previously undocumented data appear to play a vital part of the group conversation in a CCC to create meaningful, developmentally focused trainee assessments that cannot be achieved by documented data alone. Consideration should be given to ensuring the thoughtful incorporation of previously undocumented data as an essential part of the CCC assessment process.

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Gengler, Amanda M., and Matthew B. Ezzell. "Methodological Impression Management in Ethnographic Research." Journal of Contemporary Ethnography 47, no. 6 (December 18, 2017): 807–33. http://dx.doi.org/10.1177/0891241617744861.

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In this article, we contend that turning a sharp dramaturgical lens on the dynamics of fieldwork clarifies a number of longstanding ethical challenges in ethnography—challenges that have shifted and deepened in the new technological landscape in which ethnographers work. We encourage fieldworkers to adopt an intentional approach to what we call methodological impression management to navigate the research process more strategically. Drawing on our experiences conducting fieldwork in settings where some of our research participants had power over others (a women’s shelter and a substance abuse treatment program), we delineate the strategies we found useful for successful methodological impression management in complex settings and point to the dramaturgical underpinnings of their effectiveness. By bringing dramaturgical theory into direct conversation with the literature on ethnographic methods, we hope to illuminate a path through which ethnographers might make more deliberative methodological decisions and thoughtfully balance ethical responsibilities to their participants with their commitment to analytic rigor.

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Abuaziz, Suliman S. S., and Dr Ezzeddin M. A. Hejjaji. "Nanotechnology and Conventional Techniques to Detect Latent Fingerprints on Surfaces." International Journal for Research in Applied Science and Engineering Technology 10, no. 3 (March 31, 2022): 665–69. http://dx.doi.org/10.22214/ijraset.2022.40726.

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Abstract: This review paper centers around the use of legal science in dormant unique mark identification by the utilization of particular nanomaterials and their advantages concerning the nature of finger impression pictures. The use of measurable science in the discovery of the idle unique finger impression The benefits and significant aftereffects of studies directed on inert finger impression recognition with different nanomaterials which incorporate metal nano-particles, metallic oxide nanoparticles, semiconductor quantum specks, carbon dabs, polymer dabs, fluorescent silica nanoparticles, fluorescent mesoporous silica nanoparticles, fluorescent silica nanoparticles, formed polyelectrolyte spots, accumulation prompted outflow brilliant atom joined nanomaterials and phenomenal earth fluorescence nanoparticles are basically talked about. A portion of the nanomaterials utilized for idle finger impression discovery didn't bring about great quality finger impression pictures and these detriments are featured. Keywords: Nanotechnology, Nanomaterials, latent fingerprint, fluorescence

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Sousa, Fábio D’Abadia de. "POEMAS E FOTOGRAFIAS NA BUSCA PELO ETERNO." Revista Observatório 2, no. 5 (December 25, 2016): 510. http://dx.doi.org/10.20873/uft.2447-4266.2016v2n5p510.

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As possíveis semelhanças entre a poesia e a fotografia é o que analisamos neste texto. A partir da obra do modernista Oswald de Andrade, discutimos alguns elementos de aproximação entre a visualidade fotográfica e a imagem poética. Defendemos que parte da poesia oswaldiana - na qual predomina uma linguagem clara, direta, simples, sem adornos e que apresenta uma visualidade explícita - passa a impressão de que o poeta tenta colocar para o leitor cenas que se assemelham a fotografias. PALAVRAS-CHAVE: Poesia; modernismo; fotografia. ABSTRACT The possible similarities between poetry and photography is what we analyze in this text. From the work of the modernist Oswald de Andrade, we discussed some elements of approximation between the photographic visuality and the poetic image. We argue that part of Oswald's poetry - in which clear, direct, simple, unadorned language and explicit visuality predominates - gives the impression that the poet tries to put scenes that resemble photographs to the reader. KEYWORDS: Poetry; modernism; photography. RESUMEN Las posibles similitudes entre la poesía y la fotografía es lo que se analiza en este texto. Desde el modernista obra de Oswald de Andrade, se discuten algunos elementos de enfoque entre la imagen visual y poética fotográfica. Se argumenta que parte de la poesía Oswaldian - en la que predomina un lenguaje claro, directo, sencillo, sin adornos y tiene una visualidad explícita - da la impresión de que el poeta trata de poner las escenas de lectores que se asemejan a las fotografías. PALAVRAS CLAVE: Poesía; modernismo; la fotografía.

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Raev, Ada. "Georg Kolbe: Russian Impressions." Experiment 23, no. 1 (October 11, 2017): 267–85. http://dx.doi.org/10.1163/2211730x-12341315.

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Abstract The article describes German sculptor Georg Kolbe’s two direct engagements with Russia and its culture in the early twentieth century. The first, brief but fruitful, encounter, in 1912, the same year that Kolbe’s bronze sculpture Tänzerin (Female Dancer) was purchased by the National Gallery, was with Diaghilev’s Ballets Russes, who had returned for a second visit to Berlin. Kolbe received Vaslav Nijinsky and Tamara Karsavina in his studio; photographs and drawings of the two star dancers served as inspiration for works such as Tänzer (Dancer) and the Heinrich Heine monument in Frankfurt am Main, and also strengthened Kolbe’s interest in modern dance. The second opportunity came in 1932, when Kolbe, as a successful and established sculptor, was invited to tour the Soviet Union. In 1933, Kolbe published a brief account of his travels under the title “In einem anderen Land” (In another country); his observations, enriched with picturesque details, convey a feeling of empathy for the host country and its inhabitants. Only once does Kolbe admit to a certain discomfort with regard to the atmosphere in the Stalinist Soviet Union.

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Andersson, Pernille, Erik Wästlund, and Per Kristensson. "The effect of gaze on consumers’ encounter evaluation." International Journal of Retail & Distribution Management 44, no. 4 (April 11, 2016): 372–96. http://dx.doi.org/10.1108/ijrdm-03-2015-0034.

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Purpose – The research concerns the effect of frontline employees’ averted or direct gaze on consumers’ evaluation of the encounter. The purpose of this paper is to demonstrate that in normal interactions, a direct or averted gaze affects people’s evaluation of others. The question was whether this finding would hold true in commercial interactions. Design/methodology/approach – The authors conducted three experiments using a written scenario with a photograph among a total sample of 612 participants. Findings – This research showed that consumers’ social impression of the frontline employees mediated the effect of the employees’ gazing behaviour on consumers’ emotions and satisfaction with the encounters. The findings also showed that averting gaze had a negative effect on consumers’ first impression of the frontline employee, which affected consumers’ satisfaction with the encounter. The findings also showed that a direct gaze had a negative effect on encounter satisfaction when consumers sought to purchase embarrassing products. Originality/value – The research demonstrated that the effect of gaze on encounter satisfaction was mediated by the social impression and moderated by consumers’ approach/avoidance motivation.

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Butt, Darryl P., David A. Korzekwa, Stuart A. Maloy, H. Kung, and John J. Petrovic. "Impression creep behavior of SiC particle-MoSi2 composites." Journal of Materials Research 11, no. 6 (June 1996): 1528–36. http://dx.doi.org/10.1557/jmr.1996.0191.

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Using a cylindrical indenter (or punch), the impression creep behavior of MoSi2-SiC composites containing 0–40% SiC by volume, was characterized at 1000–1200 °C, 258–362 MPa punch pressure. Through finite element modeling, an equation that depends on the material stress exponent was derived that converts the stress distribution beneath the punch to an effective compressive stress. Using this relationship, direct comparisons were made between impression and compressive creep studies. Under certain conditions, compressive creep and impression creep measurements yield comparable results after correcting for effective stresses and strain rates beneath the punch. However, rate-controlling mechanisms may be quite different under the two stressing conditions, in which case impression creep data should not be used to predict compressive creep behavior. The addition of SiC affects the impression creep behavior of MoSi2 in a complex manner by pinning grain boundaries during pressing, thus leading to smaller MoSi2 grains and by obstructing or altering both dislocation motion and grain boundary sliding.

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Mahdi, Ayat S., and Manhal A. Majeed. "Marginal Fitness of Monolithic Zirconia Crowns Fabricated from Direct Digital Scanning, Impression Scanning & Indirect Digital Scanning Using Different Impression Materials." Indian Journal of Public Health Research & Development 10, no. 11 (2019): 2741. http://dx.doi.org/10.5958/0976-5506.2019.04033.6.

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Hussein, Shivan N., and Mohammed S. Shukur. "In vivo experimental infection of sarcosporidiosis and toxoplasmosis of rabbits in Duhok Province, Kurdistan region, Iraq." International Journal of Research in Medical Sciences 8, no. 10 (September 24, 2020): 3467. http://dx.doi.org/10.18203/2320-6012.ijrms20204218.

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Background: Sarcocystis species and Toxoplasma gondii are both zoonotic obligatory intracellular protozoan organisms and cyst-forming coccidian parasites that occur in domestic animals and human throughout the world.Methods: Forty local breed rabbits were divided into four groups, each group ten. Group one were infected with Sarcocystis, group two with Toxoplasma and group three with both parasites and last group was non-infected control group. The LAT serological test was used for detection of anti-toxoplasma antibody in serum of Toxoplasma infected rabbits. The direct impression smears stained with Giemsa was prepared from different body organs including; liver, lung, heart, brain and skeletal muscle for detection of tissue cysts (Bradyzoites) of T. gondii and microcysts of Sarcocystis.Results: In group one, 70% of infected rabbits were positive for toxoplasmosis by serological test; both are and by impression smear method 80% of the rabbits were positive for T. gondii with tissue cysts. Fifty percent of rabbits were positive for microcysts of Sarcocystis by direct impression smear method in group two. In group three, the impression smear and latex agglutination method were positive in 40% and 60% of rabbits, respectively. Statistically, there was no significant difference in detection of toxoplasmosis and sarcocystosis by LAT and impression smear method in group one and three.Conclusions: Rabbits could be source of toxoplasmosis and sarcocystosis and have public health implications and hazard as source of food. They might be source of infection for cats and shed environmentally resistant oocysts.

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Jung, Soong-Ryong, and Jill D. Bashutski. "Method to simplify a direct implant impression using an extended guide pin." Journal of Prosthetic Dentistry 104, no. 2 (August 2010): 137–38. http://dx.doi.org/10.1016/s0022-3913(10)60109-6.

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Curtis, Guy J., and Vance Locke. "Anxiety and impression formation: Direct information rather than priming explains affect-congruity." Cognition & Emotion 21, no. 7 (November 2007): 1455–69. http://dx.doi.org/10.1080/02699930601134000.

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Brunton, Paul A., Jithendra Ratnayake, Carolina Loch, Arthi Veerasamy, Peter Cathro, and Robert Lee. "Indirect Restorations and Fixed Prosthodontics: Materials and Techniques Used by General Dentists of New Zealand." International Journal of Dentistry 2019 (January 10, 2019): 1–6. http://dx.doi.org/10.1155/2019/5210162.

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Background. To investigate the selection and use of materials and techniques for core buildup, indirect restorations, and fixed prosthodontics by general dentists in New Zealand. Methods. A questionnaire comprising 19 sections and 125 questions was distributed via mail to 351 general dentists in New Zealand who were selected from the Dental Council of New Zealand’s 2016 register. Results. The majority of the respondents (68.8%) reported using resin composite light-cured materials for the core buildup of vital posterior teeth. A large number of respondents (52%) did not use dentine pins, with the majority of them (25%) being recent graduates (<10 years). Fibre posts were used by 61.6% of the dentists surveyed. The majority of dentists (54.6%) reported using addition-cured silicone impression material for crown and bridge impressions. Glass-ionomer cements (37.5% of participants) and resin-modified glass-ionomer cements (35.8%) were the most common luting cements used. Direct resin composite veneers were the preferred material of choice rather than indirect restoration of anterior teeth (40.4%). Conclusions. The study showed that New Zealand dentists surveyed are using current state-of-the-art materials and techniques, with their choice of material being greatly influenced by clinical indications and patients aesthetic demands.

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Panghal, Vikram, Sangeeta Sunda, Abhishek Bansal, Navneet Kukreja, Jyoti Bansal, and Urvashi Kukreja. "A Comparative Evaluation of Mean Completeness in Different Impression Techniques for Post Space: An In Vitro Study." Dental Journal of Advance Studies 06, no. 01 (April 2018): 003–6. http://dx.doi.org/10.1055/s-0038-1673496.

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AbstractEndodontic therapy enables several advantages including maintenance of a natural tooth with restoration of its esthetics and functions. But endodontically treated teeth are often mutilated by caries fracture or previous restoration. Historically, many methods have been attempted in the search for an ideal foundation or build-up design for endodontically treated teeth. Dr. G. V. Black developed a porcelain-faced crown secured in place with a screw embedded in gold filling. Richmond crown was designed as a self-contained restoration with the post being a part of the final crown. Post can be either prefabricated or custom made. Custom-made post can be fabricated by either direct or indirect technique. In the indirect technique, impression taken should exactly replicate the parameters such as design, length, surface configuration, and diameter. The main problems while taking the impression of post space are incorporation of voids in the radicular portion and the inability to produce accurate impression in all dimensions. It mainly affects the quality of fabricated cast post. Therefore, this study is undertaken to compare the different impression techniques used for post space. It is expected that the study will reveal some useful information about the impression techniques that can be used to reproduce accurate and void-free impression of post space.

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Journal articles on the topic 'Impression directe'

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