Comparative Fracture Resistance Analysis of Translucent Monolithic Zirconia Dioxide Milled in a CAD/CAM System

IF 2.7 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics-Switzerland Pub Date : 2023-05-31 DOI:10.3390/ceramics6020071

Cristian Abad-Coronel, Ángeles Paladines, A. L. Ulloa, César A. Paltán, J. I. Fajardo

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引用次数: 1

Abstract

The aim of this study was to evaluate and compare the fracture resistance of definitive zirconia dioxide restorations obtained using a computer-aided design and manufacturing (CAD/CAM) system. Methods: Two groups of ten samples were analyzed for each material (n: 20); the first group was Zolid Gen X Amann Girrbach (ZGX) and the second group was Cercon HT Dentsply Sirona (CDS). The restorations were designed with identical parameters and milled with a CAD/CAM system. Each specimen was load tested at a speed of 0.5 mm/min, with a direction parallel to the major axis of the tooth and with an initial preload of 10 N until fracture using a universal testing machine (Universal/Tensile Testing Machine, Autograph AGS-X Series) equipped with a 20 kN load cell. The results obtained were recorded in Newtons (N), using software connected to the testing machine. Results: Statistically significant differences were found, and the fracture resistance of the monolithic zirconia crowns was lower in the CDS group (1744.84 ± 172.8 N) compared to the ZGX group (2387.41 ± 516 N). Conclusions: The monolithic zirconia CAD-CAM zirconia crowns showed sufficient fracture resistance when used in posterior molar and premolar zones with either material, as they withstood fracture loads greater than the maximum masticatory force.

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在CAD/CAM系统中铣削半透明整体二氧化锆的抗断裂性能比较分析

本研究的目的是评估和比较使用计算机辅助设计和制造（CAD/CAM）系统获得的氧化锆修复体的抗断裂性。方法：每种材料分为两组，每组10个样品（n=20）；第一组为Zolid Gen X Amann Girbach（ZGX），第二组为Cercon HT Dentsply Sirona（CDS）。修复体采用相同的参数设计，并使用CAD/CAM系统进行铣削。使用配备有20kN称重传感器的通用试验机（万能/拉伸试验机，Autograph AGS-X系列），以0.5mm/min的速度、平行于牙齿主轴的方向和10N的初始预载荷对每个试样进行载荷试验，直至断裂。使用连接到测试机的软件，将获得的结果记录在牛顿（N）中。结果：CDS组（1744.84±172.8 N）与ZGX组（2387.41±516 N）相比，整体氧化锆冠的抗断裂性较低，差异具有统计学意义。结论：整体式氧化锆CAD-CAM氧化锆冠在使用任何一种材料的后磨牙和前磨牙区域时都表现出足够的抗断裂性，因为它们能够承受大于最大咀嚼力的断裂载荷。

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

Ceramics-Switzerland Multiple-

CiteScore

3.00

自引率

7.10%

发文量

审稿时长

10 weeks