Yap A U J, Mok B Y Y
Department of Restorative Dentistry, Faculty of Dentistry, National University of Singapore, Republic of Singapore.
Oper Dent. 2002 Mar-Apr;27(2):161-6.
This study compared the surface finish of a new hybrid aesthetic restorative material (Reactmer) over time to four different types of existing materials. The latter included a composite (Spectrum TPH), a compomer (Dyract AP) and conventional (Fuji II) and resin-modified glass ionomer cements (Fuji II LC). Six specimens of each material were fabricated and stored in distilled water at 37 degrees C for one week. The materials were subsequently finished with a series of Sof-Lex contouring and polishing disks. The average surface roughness (Ra, microm) of each specimen was measured at three days and three months by a surface profilometer. Storage medium was distilled water at 37 degrees C during the hiatus periods. Data was analyzed by ANOVA/Scheffe's and independent samples t-tests at significance level 0.05. At both time periods, Fuji II and Fuji II LC were significantly rougher than Spectrum, Dyract and Reactmer. For all materials, surface roughness at three days was not significantly different from that at three months. The surface finish of the giomer (Reactmer) was significantly better than conventional/resin-modified glass ionomer cements and comparable to the composite and compomer evaluated. The quality of surface finish for all materials was not significantly affected by long-term storage in water.
本研究比较了一种新型混合美学修复材料（Reactmer）随时间推移的表面光洁度与四种不同类型的现有材料。后者包括一种复合树脂（Spectrum TPH）、一种复合体（Dyract AP）以及传统玻璃离子水门汀（Fuji II）和树脂改性玻璃离子水门汀（Fuji II LC）。每种材料制作六个样本，并在37摄氏度的蒸馏水中储存一周。随后使用一系列Sof-Lex修整和抛光盘对材料进行处理。在三天和三个月时，用表面轮廓仪测量每个样本的平均表面粗糙度（Ra，微米）。在间隔期，储存介质为37摄氏度的蒸馏水。数据采用方差分析/谢费检验和独立样本t检验进行分析，显著性水平为0.05。在两个时间段，Fuji II和Fuji II LC均比Spectrum、Dyract和Reactmer明显更粗糙。对于所有材料，三天时的表面粗糙度与三个月时相比无显著差异。聚酸改性复合树脂（Reactmer）的表面光洁度明显优于传统/树脂改性玻璃离子水门汀，与所评估的复合树脂和复合体相当。所有材料的表面光洁度质量未因长期在水中储存而受到显著影响。
