Sugiyama Toshiko, Kameyama Atsushi, Enokuchi Tomoka, Haruyama Akiko, Chiba Aoi, Sugiyama Setsuko, Hosaka Makoto, Takahashi Toshiyuki
Senior Assistant Professor, Division of General Dentistry, Tokyo Dental College Chiba Hospital, 1-2-2 Masago, Mihama-ku, Chiba, Japan.
Associate Professor, Department of Operative Dentistry, Cariology and Pulp Biology, Tokyo Dental College, 1-2-2 Masago, Mihama-ku, Chiba, Japan.
J Clin Exp Dent. 2017 Jun 1;9(6):e772-e778. doi: 10.4317/jced.53826. eCollection 2017 Jun.
This study aimed to evaluate the effect of dental prophylaxis on the surface gloss and roughness of different indirect restorative materials for computer-aided design/computer-aided manufacturing (CAD/CAM): two types of CAD/CAM composite resin blocks (Shofu Block HC and Estelite Block) and two types of CAD/CAM ceramic blocks (IPS Empress CAD and Celtra DUO).
After polishing the CAD/CAM blocks and applying prophylaxis pastes, professional dental prophylaxis was performed using four different experimental protocols (n = 5 each): mechanical cleaning with Merssage Regular for 10 s four times (Group 1); four cycles of mechanical cleaning with Merssage Regular for 10 s and Merssage Fine for 10 s (Group 2); four cycles of mechanical cleaning with Merssage Regular for 10 s and Merssage Fine for 30 s (Group 3); and mechanical cleaning with Merssage Fine for 10 s four times (Group 4). A glossmeter was used to measure surface gloss before and after mechanical cleaning, and a contact stylus profilometer was used to measure surface roughness (Ra).
Polishing with prophylactic paste led to a significant reduction in surface gloss and increase in surface roughness among resin composite blocks, whereas the polishing-related change in surface gloss or roughness was smaller in Celtra DUO, a zirconia-reinforced lithium silicate block.
Changes in surface gloss and roughness due to polishing with a prophylactic paste containing large particles were not improved by subsequent polishing with a prophylactic paste containing fine particles. CAD/CAM, professional dental prophylaxis, prophylactic paste, surface gloss, surface roughness.
本研究旨在评估口腔预防措施对用于计算机辅助设计/计算机辅助制造（CAD/CAM）的不同间接修复材料的表面光泽度和粗糙度的影响：两种CAD/CAM复合树脂块（松风Block HC和Estelite Block）以及两种CAD/CAM陶瓷块（IPS Empress CAD和Celtra DUO）。
对CAD/CAM块进行抛光并涂抹预防膏后，采用四种不同的实验方案进行专业口腔预防（每组n = 5）：用Merssage Regular机械清洁10秒，重复四次（第1组）；用Merssage Regular机械清洁10秒和用Merssage Fine机械清洁10秒，重复四个循环（第2组）；用Merssage Regular机械清洁10秒和用Merssage Fine机械清洁30秒，重复四个循环（第3组）；用Merssage Fine机械清洁10秒，重复四次（第4组）。使用光泽度仪测量机械清洁前后的表面光泽度，使用接触式触针轮廓仪测量表面粗糙度（Ra）。
使用预防膏抛光导致树脂复合块的表面光泽度显著降低，表面粗糙度增加，而氧化锆增强硅酸锂块Celtra DUO的表面光泽度或粗糙度与抛光相关的变化较小。
含有大颗粒的预防膏抛光导致的表面光泽度和粗糙度变化，不会因随后使用含有细颗粒的预防膏抛光而得到改善。CAD/CAM、专业口腔预防、预防膏、表面光泽度、表面粗糙度。
