Fit Accuracy of Removable Partial Denture Frameworks Fabricated with CAD/CAM, Rapid Prototyping, and Conventional Techniques: A Systematic Review.

OBJECTIVE: Analyzing and comparing the fit and accuracy of removable partial denture (RPDs) frameworks fabricated with CAD/CAM and rapid prototyping methods with conventional techniques. MATERIALS AND METHODS: The present systematic review was carried out according to PRISMA guidelines. The search was carried out on PubMed/MEDLINE, Cochrane collaboration, Science direct, and Scopus scientific engines using selected MeSH keywords. The articles fulfilling the predefined selection criteria based on the fit and accuracy of removable partial denture (RPD) frameworks constructed from digital workflow (CAD/CAM; rapid prototyping) and conventional techniques were included. RESULTS: Nine full-text articles comprising 6 in vitro and 3 in vivo studies were included in this review. The digital RPDs were fabricated in all articles by CAD/CAM selective laser sintering and selective laser melting techniques. The articles that have used CAD/CAM and rapid prototyping technique demonstrated better fit and accuracy as compared to the RPDs fabricated through conventional techniques. The least gaps between the framework and cast (41.677 ± 15.546 µm) were found in RPDs constructed through digital CAD/CAM systems. CONCLUSION: A better accuracy was achieved using CAD/CAM and rapid prototyping techniques. The RPD frameworks fabricated by CAD/CAM and rapid prototyping techniques had clinically acceptable fit, superior precision, and better accuracy than conventionally fabricated RPD frameworks.

Trends in dental service provision in Australia: 1983-1984 to 2009-2010.

OBJECTIVE: To investigate time trends in dental service provision. METHODS: A random sample of Australian dentists was surveyed by mailed questionnaires in 1983-1984, 1993-1994, 2003-2004, and 2009-2010 (response rates 67-76%). The service rate per visit was collected from a log of services. RESULTS: The rate of service provision per visit [rate ratio (RR)] increased from 1983-1984 to 2009-2010 for the service areas of diagnostic (RR=1.8; 1.6-1.9), preventive (RR=1.9; 1.6-2.1), endodontic (RR=2.1; 1.7-2.6), and crown and bridge (RR=2.9; 2.3-3.8), whereas prosthodontic services decreased (RR=0.7; 0.6-0.9). CONCLUSIONS: The profile of services provided by dentists changed over the study period to include less emphasis on replacement of teeth and more on diagnosis, prevention, and retention of natural dentitions.

Caracterizaçäo das bases das próteses removíveis total e parciais: parte II / Caracterization of the complete and partial removable prosthetics basic

Através desta pesquisa os autores desenvolveram uma metodologia para obtençäo de resinas acrílicas termopolimerizáveis nas cores mais semelhantes àquelas observadas na pigmentaçäo natural da mucosa bucal. Os materiais utilizados como pigmentos säo de baixo custo e facilmente encontrados nos próprios laboratórios de prótese. Desta forma, com a elaboraçäo de uma ampla escala de cores pretende-se que a prática de caracterizaçäo das bases de próteses totais e parciais removíveis se torne um procedimento rotineiro entre técnicos e cirurgöes-dentistas, resultando num melhor e mais completo atendimento aos anseios estéticos, tanto pelos pacientes como pelos profissionais