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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.)

Different combinations of CAD/CAM materials on the biomechanical behavior of a two-piece prosthetic solution

Full text
Author(s):
Mendes Tribst, Joao Paulo [1] ; de Oliveira Dal Piva, Amanda Maria [1] ; Souto Borges, Alexandre Luiz [1] ; Bottino, Marco Antonio [1]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ Unesp, Inst Sci & Technol, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF COMPUTERIZED DENTISTRY; v. 22, n. 2, p. 171-176, SUM 2019.
Web of Science Citations: 0
Abstract

Aim: This study evaluated the stress distribution of implant-supported prostheses, varying the different combinations of computer-aided design/computer-aided manufacturing (CAD/CAM) materials between the hybrid abutment and the monolithic crown by three-dimensional (3D) finite element analysis (FEA). Materials and methods: Nine models were designed with Rhinoceros 3D and Ansys software. Each model contained a bone block of the molar area, including an implant (IH; empty set 3.75 x 11 mm) supporting a hybrid abutment (ceramic mesostructure (MS) cemented onto a titanium {[}Ti] base) and a monolithic crown. The occlusal load was applied to the fossa bottom (300 N; 30 degrees). The results were analyzed using the von Mises stress for each separated prosthetic structure and microstrain for the bone tissue. Result: Von Mises maps of the crown, ceramic MS, implant, screw, and cement layers showed a decreased stress concentration as the elastic modulus (E modulus) of the ceramic crown (CR) associated with a rigid ceramic MS decreased. No differences in bone tissue regarding microstrain were observed. Conclusion: Implant-supported crowns present less stress concentration when a rigid abutment is associated with resilient crowns. (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