Strain Gauge Analysis of the Stresses Induced by Different Secondary Coping Materials in Tooth Supported Telescopic Overdentures.

IF 1.1 Q3 DENTISTRY, ORAL SURGERY & MEDICINE

European Journal of Prosthodontics and Restorative Dentistry Pub Date : 2022-08-30 DOI:10.1922/EJPRD_2361Mohamed09

A M A Mohamed, N H Nawar

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引用次数: 2

Abstract

Purpose: To compare the stresses induced on the supporting abutments by different secondary coping materials; zirconia, Polyetheretherketone (PEEK) and Polyetherketone ketone (PEKK) in tooth supported telescopic overdentures using strain gauge analysis.

Materials and methods: A virtual model simulating a completely edentulous mandibular arch with two telescopic overdenture abutments in the canine region was designed and printed. The abutments received a milled zirconia primary coping. The secondary coping was milled out of zirconia in the model ZR, PEEK in the model PE and PEKK in the model PK. Five overdentures were made for each model. Strain gauge rosettes were bonded mesial and distal to each abutment. Unilateral and bilateral loadings were applied. An ANOVA test was used for statistical analysis between the three models.(α=0.01).

Results: Significant differences were found between the three models during unilateral and bilateral loading. Post Hoc Tukey tests showed significant difference between ZR and PE models, ZR and PK models in addition to PE and PK models during unilateral and bilateral loading.

Conclusion: Zirconia copings induced the highest stress while the lowest stress values were induced by the PEKK copings.

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不同复盖材料对牙托套筒覆盖义齿应力的应变分析。

目的:比较不同次顶材料对支台的应力影响;氧化锆、聚醚酮(PEEK)和聚醚酮酮(PEKK)在牙托套筒覆盖义齿中的应用。材料与方法:设计并打印了具有两个套筒覆盖义齿基台的下颌全无牙弓的虚拟模型。基台采用磨铣氧化锆为主顶。用ZR模型的氧化锆、PE模型的PEEK和PK模型的PEKK磨出二次牙冠，每个模型制作5个覆盖义齿。应变计玫瑰花接在每个基牙的中、远端。采用单边和双边加载。三个模型间采用方差分析(ANOVA)进行统计学分析(α=0.01)。结果:三种模型在单侧和双侧加载时存在显著差异。事后Tukey检验表明，除了PE和PK模型外，ZR和PE模型在单侧和双侧加载过程中也存在显著差异。结论:氧化锆涂层诱导的应力值最高，PEKK涂层诱导的应力值最低。

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

European Journal of Prosthodontics and Restorative Dentistry DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

2.30

自引率

7.70%

发文量

期刊介绍： The European Journal of Prosthodontics and Restorative Dentistry is published quarterly and includes clinical and research articles in subjects such as prosthodontics, operative dentistry, implantology, endodontics, periodontics and dental materials.