Department of Prosthodontics, Faculty of Dentistry, Lokman Hekim University, Ankara, Turkey.
Department of Prosthodontics, Faculty of Dentistry, Ankara University, Ankara, Turkey.
Niger J Clin Pract. 2023 May;26(5):604-611. doi: 10.4103/njcp.njcp_592_22.
The aim of this study was to evaluate the effectiveness of different finishing-polishing (FP) procedures on reducing surface roughness of nanoceramic hybrid CAD/CAM material before and after thermocycle (TMC) aging.
Nano-ceramic hybrid CAD/CAM specimens were subjected to 8 different (2-glaze and 6-mechanical) FP procedures as follows (n=20): 1. Optiglaze (OG) 2. Diamond glaze (DG), 3. Vita Enamic Polishing Set (VE), 4. VE+Gradia Diapolisher paste (VE-G) 5. VE+Super-Snap SuperBuff (VE-S) 6. Sof-Lex Disc kit (SL) 7. SL+Gradia Diapolisher paste (SLG) 8. SL+Super-Snap SuperBuff (SL-S). Surface roughness of each specimen was measured by using a contact profilometer. All specimens were artificially aged with TMC (5000 cycles, 5°C/55°C) and surface roughness measurements were repeated. One extra specimen from each group before and after TMC was examined with SEM. Surface roughness data were analyzed by repeated measures ANOVA, dependent t-test and Tukey test.
Significantly higher mean Ra values were found for groups OG and DG compared to other groups (P<0.05). Differences between glaze groups and differences between mechanical FP groups were not significant (P>0.05). Groups SL-S and DG demonstrated comparable results before and after TMC (P>0.05). SEM analysis revealed that surfaces of VE-S and SL-S groups were smooth and free of scratches.
Mechanical FP procedures were more effective in reducing surface roughness of nanoceramic hybrid CAD/CAM material than glaze applications. Sof-Lex kit followed by Super-Snap SuperBuff disc application can be recommended as the mechanical FP procedure of choice considering that this method provided smooth surfaces that were maintained after TMC.
本研究旨在评估不同的修整-抛光（FP）程序对纳米陶瓷混合 CAD/CAM 材料在热循环（TMC）老化前后表面粗糙度的影响。
纳米陶瓷混合 CAD/CAM 样本接受了 8 种不同的（2 种釉料和 6 种机械）FP 程序，如下所示（n=20）：1. Optiglaze（OG）2. Diamond glaze（DG）3. Vita Enamic Polishing Set（VE）4. VE+Gradia Diapolisher paste（VE-G）5. VE+Super-Snap SuperBuff（VE-S）6. Sof-Lex Disc kit（SL）7. SL+Gradia Diapolisher paste（SLG）8. SL+Super-Snap SuperBuff（SL-S）。使用接触式轮廓仪测量每个样本的表面粗糙度。所有样本均经过 TMC（5000 次循环，5°C/55°C）人工老化，重复表面粗糙度测量。每组在 TMC 前后各取一个额外的样本进行 SEM 检查。使用重复测量方差分析、独立 t 检验和 Tukey 检验对表面粗糙度数据进行分析。
与其他组相比，OG 和 DG 组的平均 Ra 值明显更高（P<0.05）。釉料组之间的差异和机械 FP 组之间的差异无统计学意义（P>0.05）。在 TMC 前后，SL-S 和 DG 组的结果相当（P>0.05）。SEM 分析显示，VE-S 和 SL-S 组的表面光滑，无划痕。
与釉料应用相比，机械 FP 程序更能有效降低纳米陶瓷混合 CAD/CAM 材料的表面粗糙度。考虑到 Sof-Lex 试剂盒和 Super-Snap SuperBuff 盘应用提供的光滑表面在 TMC 后得以保持，因此可以推荐 Sof-Lex 试剂盒和 Super-Snap SuperBuff 盘应用作为首选的机械 FP 程序。
