Header

UZH-Logo

Maintenance Infos

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


Tribst, J P M; Dal Piva, A M O; Özcan, M; Borges, A L S; Bottino, M A (2019). Influence of Ceramic Materials on Biomechanical Behavior of Implant Supported Fixed Prosthesis with Hybrid Abutment. European Journal of Prosthodontics and Restorative Dentistry, 27(2):76-82.

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°, 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 for a 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.

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°, 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 for a 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.

Statistics

Citations

Dimensions.ai Metrics

Altmetrics

Downloads

2 downloads since deposited on 13 Feb 2020
2 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic of Reconstructive Dentistry
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:30 May 2019
Deposited On:13 Feb 2020 14:09
Last Modified:14 Feb 2020 08:35
Publisher:Mosby-Year Book Europe
ISSN:0965-7452
OA Status:Closed
Publisher DOI:https://doi.org/10.1922/EJPRD_01829Tribst07
PubMed ID:31046208

Download

Closed Access: Download allowed only for UZH members