Mourouzis Peter, Koulaouzidou Elisabeth A, Vassiliadis Leonidas, Helvatjoglu-Antoniades Maria
Department of Operative Dentistry, Faculty of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
J Oral Sci. 2009 Dec;51(4):607-14. doi: 10.2334/josnusd.51.607.
The surface roughness of dental restorative materials has a crucial effect on the health of dental and periodontal tissues as well as for the longevity of restorations. In this study we tested a glass ionomer restorative cement, two nanohybrid resin composites, a flowable resin composite and a silorane-based composite. Twenty cylindrical specimens of each material were prepared, cured, polished and instrumented with a sonic scaler (Alegra ST ZE-55 RM W&H, Austria). The mean surface roughness was recorded using a profilometer (SJ-201, Mitutoyo, Japan) at three stages: before scaling, after scaling and after re-polishing. Additional specimens were analyzed by scanning electron microscopy and back-scattered imaging. Data were examined statistically by analysis of variance (ANOVA) and post-hoc tests at a level of significance of P < 0.05. The profilometric measurements and the SEM evaluation showed that, in most of the materials tested, the surface roughness was significantly increased after sonic instrumentation. After re-polishing the specimens, the roughness values were decreased. Periodontal scaling should include polishing of restorations in order to overcome alterations in surface roughness.
牙科修复材料的表面粗糙度对牙齿及牙周组织的健康以及修复体的使用寿命有着至关重要的影响。在本研究中，我们测试了一种玻璃离子修复水门汀、两种纳米混合树脂复合材料、一种流动树脂复合材料和一种硅烷类复合材料。每种材料制备20个圆柱形试件，进行固化、抛光，并使用超声洁牙机（奥地利W&H公司的Alegra ST ZE - 55 RM）进行处理。使用轮廓仪（日本三丰公司的SJ - 201）在三个阶段记录平均表面粗糙度：洁牙前、洁牙后和重新抛光后。通过扫描电子显微镜和背散射成像对额外的试件进行分析。数据通过方差分析（ANOVA）和事后检验进行统计学检验，显著性水平为P < 0.05。轮廓测量和扫描电子显微镜评估表明，在大多数测试材料中，超声处理后表面粗糙度显著增加。重新抛光试件后，粗糙度值降低。牙周洁治应包括对修复体进行抛光，以克服表面粗糙度的改变。
