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Influence of different base thicknesses on maxillary complete denture processing: linear and angular graphic analysis on the movement of artificial teeth.
Mazaro, José Vitor Quinelli; Gennari Filho, Humberto; Vedovatto, Eduardo; Amoroso, Andressa Paschoal; Pellizzer, Eduardo Piza; Zavanelli, Adriana Cristina.
Afiliação
  • Mazaro JV; Department of Dental Materials and Prosthodontics, School of Dentistry at Araçatuba, UNESP-Universidade Estadual Paulista, Araçatuba, São Paulo, Brazil.
J Craniofac Surg ; 22(5): 1661-5, 2011 Sep.
Article em En | MEDLINE | ID: mdl-21959408
OBJECTIVE: The purpose of this study was to compare the dental movement that occurs during the processing of maxillary complete dentures with 3 different base thicknesses, using 2 investment methods, and microwave polymerization. METHODS: A sample of 42 denture models was randomly divided into 6 groups (n = 7), with base thicknesses of 1.25, 2.50, and 3.75 mm and gypsum or silicone flask investment. Points were demarcated on the distal surface of the second molars and on the back of the gypsum cast at the alveolar ridge level to allow linear and angular measurement using AutoCAD software. The data were subjected to analysis of variance with double factor, Tukey test and Fisher (post hoc). RESULTS: Angular analysis of the varying methods and their interactions generated a statistical difference (P = 0.023) when the magnitudes of molar inclination were compared. Tooth movement was greater for thin-based prostheses, 1.25 mm (-0.234), versus thick 3.75 mm (0.2395), with antagonistic behavior. Prosthesis investment with silicone (0.053) showed greater vertical change compared with the gypsum investment (0.032). There was a difference between the point of analysis, demonstrating that the changes were not symmetric. CONCLUSIONS: All groups evaluated showed change in the position of artificial teeth after processing. The complete denture with a thin base (1.25 mm) and silicone investment showed the worst results, whereas intermediate thickness (2.50 mm) was demonstrated to be ideal for the denture base.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Dente Artificial / Técnicas de Movimentação Dentária / Planejamento de Dentadura / Bases de Dentadura / Prótese Total Superior Tipo de estudo: Prognostic_studies Limite: Humans Idioma: En Revista: J Craniofac Surg Assunto da revista: ODONTOLOGIA Ano de publicação: 2011 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Dente Artificial / Técnicas de Movimentação Dentária / Planejamento de Dentadura / Bases de Dentadura / Prótese Total Superior Tipo de estudo: Prognostic_studies Limite: Humans Idioma: En Revista: J Craniofac Surg Assunto da revista: ODONTOLOGIA Ano de publicação: 2011 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos