The Comparison of Fracture Resistance between Low Translucent and Ultra-High Translucent Monolithic Zirconia Crown

European dental research and biomaterials journal Pub Date : 2023-12-13 DOI:10.1055/s-0043-1768175

Pratama Kesuma Tanudjaja, Setyawan Bonifacius, R. Rikmasari

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Abstract

Abstract Objective From the beginning of its discovery, the monolithic zirconia crown was highlighted for its remarkable strength; therefore, only available in opaque color. During the past decade, the translucent monolithic zirconia crown was manufactured to meet the aesthetic and restoration demand but was thought to be the cause of decreasing its strength. This study aimed to compare the fracture resistance between two types of translucent monolithic zirconia crowns, that is, low translucent monolithic zirconia (LT) and ultra-high translucent monolithic zirconia (UHT). Material and Methods The premolar crown model was prepared using a computer-aided design/computer-aided manufacturing system, producing 1 mm of thickness. Ten crown samples were divided into LT and UHT. Then, each sample was measured for its fracture resistance using Universal Testing Machine until a fracture occurred. The differences in fracture resistance were analyzed using an independent t -test with p < 0.05. Result The LT showed a higher fracture resistance than UHT ( p < 0.05). Conclusion The LT monolithic zirconia crown has strength and can be used for posterior crown restoration.

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低半透明和超高半透明整体氧化锆冠的抗折性能比较

摘要目的从发现之初，单晶氧化锆牙冠就因其卓越的强度而备受瞩目，因此只有不透明的颜色。在过去的十年中，半透明的整体氧化锆冠被制造出来以满足美学和修复的需求，但被认为是其强度下降的原因。本研究旨在比较两种半透明整体氧化锆冠，即低半透明整体氧化锆（LT）和超高半透明整体氧化锆（UHT）的抗折性。材料和方法使用计算机辅助设计/计算机辅助制造系统制作前磨牙牙冠模型，厚度为 1 毫米。十个牙冠样品被分为 LT 和 UHT 两种。然后，使用万能试验机测量每个样品的抗折性，直至发生断裂。采用独立 t 检验分析抗折强度的差异，P < 0.05。结果 LT 的抗断裂强度高于 UHT（P < 0.05）。结论 LT 整体氧化锆冠具有一定的强度，可用于后冠修复。

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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European dental research and biomaterials journal

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