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Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial
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Inicio Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial Estudo Comportamental do Poli(metilmetacrilato) nos Rebasamentos Indirectos
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Vol. 49. Issue 1.
Pages 5-12 (January - March 2008)
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Vol. 49. Issue 1.
Pages 5-12 (January - March 2008)
Investigação
Open Access
Estudo Comportamental do Poli(metilmetacrilato) nos Rebasamentos Indirectos
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José Manuel Mendes*, António Correia Pinto*, Tomás Escuin Henar**, Josep M. Ustrell***, José Alberto Coelho****
* Médico Dentista, Professor Auxiliar do Serviço de Reabilitação Oral do Instituto Superior de Ciências da Saúde Norte
** Professor Titular e Coordenador do Mestrado de Prótese Dentária da Universidade de Barcelona
*** Professor Titular e Coordenador do Mestrado de Ortodontia da Universidade Barcelona
**** Médico Dentista, Assistente Estagiário do Instituto Superior de Ciências da Saúde Norte
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Resumo

O objectivo deste estudo em vitro foi comparar o comportamento do poli(metilmetacrilato) nos rebasamentos indirectos (Paladon® 65, Lucitone® Fas-PorTM e Palapress® Vario), em diferentes graus de espessura do material, utilizando diversos pontos da região palatina nos vários grupos de modelos. Realizamos 60 rebasamentos em modelos, divididos em 15 modelos com espessura de 1mm, 15 modelos com espessura de 2mm, 15 modelos com espessura de 3mm e 15 modelos com espessura de 4mm, com o intuito de produzir 900 unidades experimentais que foram medidas num Inverted Research Metallurgical Microscope. Os valores médios da distância na interface entre a resina acrílica dos rebasamentos e os modelos em gesso observados durante o estudo comportamental do poli(metilmetacrilato) nos rebasamentos indirectos, podem ser ordenados da seguinte forma:

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    Segundo a espessura μ1mm<μ2mm3mm4mm

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    Tipo de resina utilizado: μPalapress VarioLucitonePaladon 65

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    Localização dos pontos de medição do palato μP3P4P1P5

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    Corte transversal efectuado: μCorte ACorte BCorte C

Em conclusão: Os rebasamentos realizados com resina auto-polimerizável Palapress vario, nas espessuras de 1mm e 2mm e o ponto 3 correspondente ao ponto médio do palato, obtiveram os melhores resultados (p<0.01).

Palavras-Chave:
Rebasamentos indirectos
Adaptação protética
Resina acrílica
Abstract

The objective of the present study was the comparison between the behaviour of various polymethyl metacrylates (Paladon® 65, Lucitone® Fas-porTM e Palapress® Vario) utilised in indirect denture reline, involving distinct regions of the palatal surface of the various groups of models, and relative to specific degree of thickness. A total of 60 reline models where elaborated, divided into 4 groups of 15 in accordance to thickness; 1mm thickness, 2mm thickness, 3mm thickness, and 4mm thickness, with the objective of achieving 900 experimental units, witch where Microscope. subsequently analyzed under an Inverted Research Metallurgical

The ordinate values relative to the mean distance on the interface, between the acrylic resin of indirect reline and the casts, values of the various polymethyl metacrylates utilized in indirect reline the present study is as follows:

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    In accordance to thickness μ1mm2mm3mm4mm

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    Type of resin utilized: μPalapress VarioLucitonePaladon 65

  • -

    Location of palatal measurement points: μP3P4P1P5

  • -

    Transverse section: μCorte ACorte BCorte C

In conclusion: The best reline results (p<0.01), was achieved with the utilization of Palapress® Vario, an auto-polymerized resin, at the measurement point corresponding to the palatal midline (point 3), and 1mm and 2mm thickness.

Key-words:
Indirect reline
Prosthetic desadaptation
Acrylic resin
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(Mendes JM, Pinto AC, Henar TE, Ustrell JM, Coelho JA. Estudo Comportamental do Poli(metilmetacrilato) nos Rebasamentos Indirectos. Rev Port Estomatol Cir Maxilofac 2008;49:5–12)

Copyright © 2008. Sociedade Portuguesa de Estomatologia e Medicina Dentária
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