体外刷牙后分层充填和大块充填复合树脂的表面性能及颜色稳定性

Surface properties and color stability of incrementally-filled and bulk-fill composites after in vitro toothbrushing.

作者信息

Lai Guangyun, Zhao Liya, Wang Jun, Kunzelmann Karl-Heinz

机构信息

Department of Pediatric Dentistry, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China.

Department of Operative Dentistry, Periodontology and Pedodontics, Ludwig-Maximilians-University of Munich, Munich, Germany.

出版信息

Am J Dent. 2017 Oct;30(5):262-266.

PMID:29178729

Abstract

PURPOSE

To evaluate the effect of simulated toothbrush abrasion on the surface gloss, the surface roughness and the color stability of incrementally-filled and bulk-fill composites.

METHODS

48 dimensionally standardized composite specimens (n= 8/group) were made from four incrementally-filled composites (Tetric EvoCeram, IPS Empress Direct Enamel, Ceram X mono and Arabesk) and two bulk-fill composites (Quix fil and Tetric EvoCeram Bulk). Before and after toothbrushing simulation the surface gloss was measured by a glossmeter, the surface roughness was evaluated with a profilometer, and the color was measured using a spectrophotometer.

RESULTS

Before and after the toothbrush abrasion, IPS Empress Direct Enamel yielded the highest gloss value, while Ceram X mono exhibited the lowest gloss value. Quix fil showed the highest Ra value before the toothbrushing simulation, however, it showed similar Ra value with Ceram X mono and Arabesk after the toothbrushing simulation. IPS Empress Direct Enamel showed the lowest ΔE after the simulated toothbrushing. Tetric EvoCeram Bulk showed similar gloss value, Ra value, and ΔE to Tetric EvoCeram after the toothbrushing simulation. Simple regression analysis showed no correlation between the roughness and the gloss, but it showed a positive linear relationship between ΔE and ΔRa. (R2= 0.863, P= 0.027).

CLINICAL SIGNIFICANCE

The evaluated bulk-fill composites did not exhibit significantly worse surface properties and color stability than incrementally-filled materials after toothbrush abrasion. Color changes of composites caused by toothbrush abrasion were acceptable on the premise that 3.3ΔE units were considered as acceptable threshold values.

摘要

目的

评估模拟牙刷磨损对逐层填充和一次性填充复合树脂的表面光泽度、表面粗糙度及颜色稳定性的影响。

方法

用四种逐层填充复合树脂（Tetric EvoCeram、IPS Empress Direct Enamel、Ceram X mono和Arabesk）和两种一次性填充复合树脂（Quix fil和Tetric EvoCeram Bulk）制作48个尺寸标准化的复合树脂样本（每组n = 8）。在模拟牙刷磨损前后，用光泽仪测量表面光泽度，用轮廓仪评估表面粗糙度，并用分光光度计测量颜色。

结果

在牙刷磨损前后，IPS Empress Direct Enamel的光泽度值最高，而Ceram X mono的光泽度值最低。在模拟牙刷磨损前，Quix fil的Ra值最高，然而，在模拟牙刷磨损后，它与Ceram X mono和Arabesk的Ra值相近。在模拟牙刷磨损后，IPS Empress Direct Enamel的ΔE最低。在模拟牙刷磨损后，Tetric EvoCeram Bulk的光泽度值、Ra值和ΔE与Tetric EvoCeram相近。简单回归分析表明粗糙度与光泽度之间无相关性，但ΔE与ΔRa之间呈正线性关系（R2 = 0.863，P = 0.027）。