Intra-oral restorative materials wear: Rethinking the current approaches: How to measure wear
Intra-oral restorative materials wear: Rethinking the current approaches: How to measure wear
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DOI：
10.1016/j.dental.2006.02.003
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发表时间：
2006-08-01
期刊：
影响因子：
5
通讯作者：
DeLong, Ralph
中科院分区：
文献类型：
--
作者：
DeLong, Ralph
目标。确定哪些磨损参数(S)具有临床相关性，以及哪些因素对在体内和体外准确测量这些参数具有重要意义。描述影响咀嚼的生物力学因素和磨损机理。研究它们如何影响牙齿和修复材料的磨损。根据这些信息，定义使用体积、深度和面积参数来量化磨损的优缺点。描述了直接和间接测量磨损的方法，并指出了每种方法的优缺点。量化磨损的首选参数是体积。它不受咬合因素的影响，是测量所做功量的一种方法。如果材料和环境因素保持不变，体积损失与时间呈线性关系。由于深度和面积对咬合因素的依赖，它们的临床价值有限；另外，它们与时间不成线性关系。在测量磨损量时，必须考虑感兴趣的材料和相反的材料；特别是如果相反的材料是珐琅的话。磨损量最好通过比较连续的3D图像来衡量。测量系统应使用西格玛值而不是平均值和标准偏差来校准其报告的误差。序列图像的对准质量应包括在误差分析中。3D成像系统的成本和可用性严重限制了其在临床研究中的应用。磨损是咬合相互作用的重要结果。如果不加以控制，佩戴可能会导致咀嚼功能低下，伴随而来的是生活质量下降，并可能导致全身健康状况恶化。(C)2006年牙科材料学会。爱思唯尔有限公司出版。保留所有权利。
Objective. To determine what wear parameter(s) have clinical relevance and what factors are important for accurate measurement of these parameters in vivo and in vitro.Method. Describe biomechanical factors affecting mastication and the mechanics of wear. Investigate how they impact the wear of teeth and restorative materials. Based on this information, define the advantages and disadvantages of using volume, depth, and area parameters to quantify wear. Describe direct and indirect methods of measuring wear and point out advantages and disadvantages of each.Results. The preferred parameter for quantifying wear is volume. it is independent of occlusal factors and is a measure of work done. if material and environmental factors remain constant, volume loss is linear with time. Depth and area have limited clinical value because of their dependence on occlusal factors; plus, they are not linear with time. When measuring wear the material of interest and the opposing material must be considered; especially if the opposing material is enamel. Wear is best measured by comparing sequential 3D images. Measuring systems should be calibrated with their error reported using sigma values rather means and standard deviations. The quality of the alignment of the sequential images should be included in the error analysis. Cost and availability of 3D imaging systems has severely limited their use in clinical studies.Significance. Wear is an important consequence of occlusal interactions. If not controlled, wear could lead to poor masticatory function with a concomitant reduction in quality of life and possible deterioration of systemic health. (C) 2006 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.