| Texto completo | |
| Autor(es): |
Mendes Tribst, Joao Paulo
[1]
;
de Oliveira Dal Piva, Amanda Maria
[1]
;
Oezcan, Mutlu
[2]
;
Souto Borges, Alexandre Luiz
[1]
;
Bottino, Marco Antonio
[1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Sao Paulo State Univ, Postgrad Program Restorat Dent Prosthodont, Dept Dent Mat & Prosthodont, Inst Sci & Technol, Unesp, SJC, Sao Paulo - Brazil
[2] Univ Zurich, Clin Fixed & Removable Prosthodont & Dent Mat Sci, Dent Mat Unit, Ctr Dent & Oral Med, Zurich - Switzerland
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | EUROPEAN JOURNAL OF PROSTHODONTICS AND RESTORATIVE DENTISTRY; v. 27, n. 2, p. 76-82, JUN 2019. |
| Citações Web of Science: | 0 |
| Resumo | |
Purpose: This study evaluated the stress distribution in different cement-retained implant-supported prostheses with a hybrid abutment. Materials and Methods: Two factors were evaluated: restorative material for the crown and hybrid abutment - zirconia, lithium disilicate and hybrid ceramic, yielding 9 combinations. For finite element analysis, a monolithic crown cemented on a hybrid abutment was modeled and cemented on a titanium base (Ti base). An oblique load (45 degrees, 300 N) was applied to the fossa bottom and system fixation occurred on the bone's base. Results: Each structure was evaluated separately to find the possible weaknesses in geometry and failure criteria. In this context, results demonstrated a significant decrease of maximum principal and von-Mises stresses concentration when crowns with high elastic modulus are cemented onto a hybrid abutment with lower elastic modulus. Conclusions: Considering this theoretical study fora Morse taper implant, the association of a rigid crown with a more resilient hybrid abutment reduces the tensile stress concentration in the restoration cervical region. (AU) | |
| Processo FAPESP: | 17/23059-1 - Comportamento de diferentes reabilitações com materiais cerâmicos sob fadiga mecânica |
| Beneficiário: | Marco Antonio Bottino |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/09104-4 - Comportamento biomecânico e sobrevivência de coroas de cerâmica híbrida implanto-suportadas confeccionadas por diferentes técnicas |
| Beneficiário: | João Paulo Mendes Tribst |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |