In vitro fatigue tests and in silico finite element analysis of dental implants with different fixture/abutment joint types using computer-aided design models

Yamaguchi, Satoshi; Yamanishi, Yasufumi; Machado, Lucas S. et al.

Journal of Prosthodontic Research, 2018, 62(1), 24-30

Number of Access:682（2025-08-14 15:05 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/93094

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Title
In vitro fatigue tests and in silico finite element analysis of dental implants with different fixture/abutment joint types using computer-aided design models
Creator
NRID
1000030397773 1000030397773
ORCID
0000-0002-4661-8821 0000-0002-4661-8821
researchmap permalink
YamaguchiS_30397773 YamaguchiS_30397773
Scopus Author ID
7403873463 7403873463
CreatorName
Yamaguchi, Satoshi
NRID
1000020734015 1000020734015
CreatorName
Yamanishi, Yasufumi
CreatorName
Machado, Lucas S.
NRID
1000090965279 1000090965279
CreatorName
Matsumoto, Shuji
CreatorName
Tovar, Nick
CreatorName
Coelho, Paulo G.
CreatorName
Thompson, Van P.
NRID
1000080243244 1000080243244
ORCID
0000-0003-3655-4809 0000-0003-3655-4809
researchmap permalink
read0014210 read0014210
Scopus Author ID
55994423600 55994423600
CreatorName
Imazato, Satoshi
Subject
Bioengineering
Dental implant-abutment design
Fatigue test
Finite element analysis
Step-stress accelerated life tests
Description
Yamaguchi S., Yamanishi Y., Machado L.S., et al. In vitro fatigue tests and in silico finite element analysis of dental implants with different fixture/abutment joint types using computer-aided design models. Journal of Prosthodontic Research 62, 24 (2018); https://doi.org/10.1016/j.jpor.2017.03.006.
Abstract
Purpose The aim of this study was to evaluate fatigue resistance of dental fixtures with two different fixture-abutment connections by in vitro fatigue testing and in silico three-dimensional finite element analysis (3D FEA) using original computer-aided design (CAD) models. Methods Dental implant fixtures with external connection (EX) or internal connection (IN) abutments were fabricated from original CAD models using grade IV titanium and step-stress accelerated life testing was performed. Fatigue cycles and loads were assessed by Weibull analysis, and fatigue cracking was observed by micro-computed tomography and a stereomicroscope with high dynamic range software. Using the same CAD models, displacement vectors of implant components were also analyzed by 3D FEA. Angles of the fractured line occurring at fixture platforms in vitro and of displacement vectors corresponding to the fractured line in silico were compared by two-way ANOVA. Results Fatigue testing showed significantly greater reliability for IN than EX (p < 0.001). Fatigue crack initiation was primarily observed at implant fixture platforms. FEA demonstrated that crack lines of both implant systems in vitro were observed in the same direction as displacement vectors of the implant fixtures in silico. Conclusions In silico displacement vectors in the implant fixture are insightful for geometric development of dental implants to reduce complex interactions leading to fatigue failure.
Publisher
Elsevier Ltd
Source Title
Journal of Prosthodontic Research
Volume (Issue)
62(1)
Page
24-30
Date of Issued
2018-01-01
Language
English
Handle URL
https://hdl.handle.net/11094/93094
PISSN
18831958
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.jpor.2017.03.006
Access Rights
open access
CopyRight
© 2018 Japan Prosthodontic Society
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article