Evaluation of biomechanical behavior of all-ceramic cantilever resin-bonded fixed dental prostheses: a finite element analysis.

IF 3.1 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

BMC Oral Health Pub Date : 2025-10-06 DOI:10.1186/s12903-025-06920-4

Tri Minh Doan, Yen Hoang Truong, Chau Tran Bao Vu

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Abstract

Background: Resin-bonded fixed dental prostheses (RBFDPs) offer a minimally invasive approach while delivering excellent aesthetics and functionality. This study aimed to examine the stress distribution in RBFDPs.

Methods: Two intact natural teeth (#11 and #13) were selected and mounted into a dental model using a silicone mold, with tooth #12 removed to simulate the absence of a maxillary lateral incisor. Four cantilever RBFDP models were created: Model 1, #11 abutment, made of zirconia; Model 2, #13 abutment, made of zirconia; Model 3, #11 abutment, made of lithium disilicate; and Model 4, #13 abutment, made of lithium disilicate. A 200 N occlusal force was applied to the pontic. Finite element analysis (FEA) was performed to quantify the maximum von Mises stress distribution in the framework, cement layer, and periodontal ligament (PDL).

Results: The maximum von Mises stress in the framework was highest in the zirconia RBFDP with #11 as the abutment (model 1), and lowest in the lithium disilicate RBFDP with #13 as the abutment (model 4). Regarding the cement layer, the maximum von Mises stress was greatest in the lithium disilicate RBFDP with #11 as the abutment (model 3), and lowest in the zirconia RBFDP with #13 as the abutment (model 2).

Conclusions: The canine is a more efficient abutment than the central incisor in terms of maximum von Mises stress in the framework, cement layer, and on the PDL. Regarding the materials used, zirconia showed lower von Mises stress on the cement layer. Therefore, a zirconia cantilever RBFDP with the canine as the abutment is recommended as the preferred choice for all-ceramic cantilever RBFDPs.

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全陶瓷悬臂树脂粘接固定义齿生物力学性能评价：有限元分析。

背景：树脂粘接固定义齿（rbfdp）提供了一种微创的方法，同时提供了良好的美学和功能。本研究旨在研究RBFDPs的应力分布。方法：选择两颗完整的天然牙（#11和#13），使用硅胶模具安装到牙齿模型中，移除#12牙以模拟上颌侧切牙的缺失。创建了四个悬臂式RBFDP模型：模型1,11号基台，由氧化锆制成；型号2,13号基台，氧化锆材料；3型，11号基台，二硅酸锂材料；型号4,13号基台，采用二硅酸锂材料。对桥桥施加200n的咬合力。采用有限元分析（FEA）量化骨框架、骨水泥层和牙周韧带（PDL）的最大von Mises应力分布。结果：11号基台的氧化锆RBFDP骨架内von Mises应力最大（模型1），13号基台的二硅酸锂RBFDP骨架内von Mises应力最小（模型4）。对于水泥层，以11号基台为基台的二硅酸锂RBFDP最大von Mises应力（模型3），以13号基台为基台的氧化锆RBFDP最小（模型2）。结论：在骨架、骨水泥层和牙柱上的最大von Mises应力方面，犬齿是比中切牙更有效的基牙。对于所使用的材料，氧化锆在水泥层上表现出较低的von Mises应力。因此，在全陶瓷悬臂式RBFDP中，建议首选以犬齿为基台的氧化锆悬臂式RBFDP。

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

BMC Oral Health DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

3.90

自引率

6.90%

发文量

481

审稿时长

6-12 weeks

期刊介绍： BMC Oral Health is an open access, peer-reviewed journal that considers articles on all aspects of the prevention, diagnosis and management of disorders of the mouth, teeth and gums, as well as related molecular genetics, pathophysiology, and epidemiology.