Basic Finite Element Analysis of Para-periodontal Ligament in All-ceramic Zirconia Fixed Partial Denture.

IF 0.5 Q4 DENTISTRY, ORAL SURGERY & MEDICINE

Bulletin of Tokyo Dental College Pub Date : 2015-01-01 DOI:10.2209/tdcpublication.56.215

Syuntaro Nomoto, S. Matsunaga, Toru Sato, Mamoru Yotsuya, S. Abe

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引用次数: 3

Abstract

The purpose of the present study was to investigate the validity of incorporating a para-periodontal ligament in the test mold used in a basic fracture test of a zirconia all-ceramic fixed partial denture (FPD). A simplified three-dimensional finite element analysis model was designed based on the three-unit FPD fracture test. Two types of model, one with and one without a para-periodontal ligament between the abutment and base mold, were fabricated. Microfocus CT of the missing first molar area in a dry human mandible was performed. A three-dimensional model was then fabricated based on the data obtained. A load of 600 N was applied to the center of the pontic and stress distribution observed. The model with the para-periodontal ligament showed stress dispersion to the dental root with rotation of the abutment mold. Stress distribution in the finite element analysis model with a para-periodontal ligament showed greater similarity with that in the mandibular model than with that in the other two models without a para-periodontal ligament.

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全陶瓷氧化锆固定局部义齿牙周旁韧带的基本有限元分析。

本研究的目的是探讨在氧化锆全陶瓷固定局部义齿(FPD)基本断裂试验中使用的测试模具中加入牙周旁韧带的有效性。基于三单元FPD断裂试验，设计了简化的三维有限元分析模型。制作两种模型，一种是在基台和基模之间有和没有牙周旁韧带。对干燥人下颌骨缺失的第一磨牙区域进行微聚焦CT扫描。然后根据所获得的数据制作三维模型。在桥体中心施加600 N的荷载，观察到应力分布。带牙周旁韧带的模型随着基模的旋转，应力向牙根分散。有牙周旁韧带有限元分析模型的应力分布与下颌模型的相似度高于无牙周旁韧带有限元分析模型的应力分布。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Tokyo Dental College DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The bulletin of Tokyo Dental collegue is principally for the publication of original contributions to multidisciplinary research in dentistry.