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Tribological performance of the pair human teeth vs 3D printed zirconia : an in vitro chewing simulation study

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Resumo:This study aims to evaluate the tribological performance of the pair human teeth/robocasted zirconia, with a special focus on the enamel wear mechanisms. Zirconia pieces produced by robocasting (RC) and unidirectional compression (UC) were compared in terms of crystalline structure, density, porosity, hardness and toughness. Chewing simulation tests were performed against human dental cusps. The cusps wear was quantified and the wear mechanisms identified. Although most of the properties of UC and RC samples are similar, differences were observed for surface roughness and porosity. Although the samples did not suffer wear, the antagonist cusps worn in a similar way. In conclusion, robocasting seems a promising technique to produce customized zirconia dental pieces, namely in what concerns the overall tribological behaviour.
Autores principais:Branco, A. C.
Outros Autores:Silva, R.; Jorge, H.; Santos, T.; Lorenz, K.; Polido, M.; Colaço, R.; Serro, A. P.; Figueiredo-Pina, C. G.
Assunto:Robocasting Unidirectional compressing Dental zirconia pieces Tribological behaviour
Ano:2020
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso restrito
Instituição associada:Egas Moniz - Cooperativa de Ensino Superior, CRL
Idioma:inglês
Origem:Egas Moniz - Cooperativa de Ensino Superior, CRL

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