Direct and indirect composite laminate veneers have been frequently used, however the wear of composite restorative materials is still a major problem. Objective: This study aimed to investigate the surface roughness and wear of composite laminate veneers made by two different methods after toothbrushing simulation. Material and Methods: Ninety-six upper incisors and canines were divided into two groups: 1-Componeer prefabricated composite veneer (CPV), 2- Uveneer direct composite veneer (UDV). At the UDV group, restorations were made by using Uveneer template system with the same nanofilled composite material (Synergy D6, Coltène, Altstatten, Switzerland) of the prefabricated Componeers’. The initial surface roughness was measured with a profilometer, then the weight was measured. Before the simulation, samples were screened with a 3D extra-oral scanner. Toothbrush simulation was performed at 10,000 rotational strokes with 2.5 N. The measurements were repeated after toothbrushi...

中文翻译：

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牙刷磨损对直接和间接复合层压板饰面修复体磨损和表面粗糙度的影响

直接和间接复合层压薄板已被广泛使用，但是复合修复材料的磨损仍然是一个主要问题。目的：本研究旨在研究在模拟牙刷后用两种不同方法制成的复合层压板的表面粗糙度和磨损。材料和方法：将96颗上切牙和犬牙分为两组：1-Componeer预制复合贴面（CPV），2-Uveneer直接复合贴面（UDV）。在UDV小组中，使用Uveneer模板系统进行修复，并使用与预制Componeers'相同的纳米填充复合材料（Synergy D6，Collete，Altstatten，瑞士）。用轮廓仪测量初始表面粗糙度，然后测量重量。在模拟之前，用3D口腔外扫描仪筛选样品。在10,000旋转冲程下以2.5 N进行牙刷仿真。在刷牙后重复测量。