Influence of Ceramic Materials on Biomechanical Behavior of Implant Supported Fixed Prosthesis with Hybrid Abutment

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]

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

• 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