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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Mendes Tribst, Joao Paulo [1] ; de Oliveira Dal Piva, Amanda Maria [1] ; Oezcan, Mutlu [2] ; Souto Borges, Alexandre Luiz [1] ; Bottino, Marco Antonio [1]
Total Authors: 5
Affiliation:
[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
Total Affiliations: 2
Document type: Journal article
Source: EUROPEAN JOURNAL OF PROSTHODONTICS AND RESTORATIVE DENTISTRY; v. 27, n. 2, p. 76-82, JUN 2019.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 17/23059-1 - Behavior of different rehabilitations with ceramic materials under mechanical fatigue
Grantee:Marco Antonio Bottino
Support Opportunities: Regular Research Grants
FAPESP's process: 17/09104-4 - Biomechanical behavior and survival of implant-supported hybrid ceramic crowns manufactured by different techniques
Grantee:João Paulo Mendes Tribst
Support Opportunities: Scholarships in Brazil - Doctorate