Gomes Isabella A, Mendes Hevylla Ggs, Filho Etevaldo M Maia, de C Rizzi Cláudia, Nina Mario G, Turssi Cecilia P, Vasconcelos Ana Jc, Bandeca Matheus C, de Jesus Tavarez Rudys R
Department of Dentistry, Ceuma University, Sao Luis Maranhao, Brazil.
Department of Dentistry, Sao Leopoldo Mandic University Campinas, Sao Paulo, Brazil.
J Contemp Dent Pract. 2018 Jan 1;19(1):37-41. doi: 10.5005/jp-journals-10024-2208.
The aim of this study is to evaluate the effect of dental prophylaxis techniques on surface roughness of composite resins.
A total of 36 nanohybrid resin composite test specimens were fabricated and divided into three groups (n = 12). They were kept in distilled water at 37°C for 24 hours and submitted to the finishing and polishing technique. For the prophylactic techniques, in group G1, a mixture of pumice stone and distilled water was used with the aid of a rubber cup; in group G2, Herjos-F prophy paste was used with a rubber cup; and in group G3, a bicarbonate jet spray was used. Afterward, all the samples were repolished using the Soflex pop-on disks. A roughness meter was used to measure surface roughness at three points in time: Before the prophylactic techniques (1st evaluation), afterward (2nd evaluation), and following repeat polishing (3rd evaluation).
It was found that roughness values changed significantly between the 1st and 2nd evaluations (p < 0.05) and between the 2nd and 3rd evaluations (p < 0.05), showing that the change in roughness depended on the type of prophylactic treatment. Roughness was significantly higher after the bicarbonate jet (p < 0.05).
Prophylaxis using the sodium bicarbonate jet significantly altered the roughness of nanoparticle-reinforced resin.
Dental prophylaxis is the most common practice employed to remove bacterial plaque and other coatings. However, one side effect of the cleaning may be a rougher surface subject to degradation and staining. The correct use of prophylactic devices and avoiding prolonged use on resin restorations reduce surface roughness.
本研究旨在评估牙齿预防技术对复合树脂表面粗糙度的影响。
共制作36个纳米混合树脂复合材料测试样本，并分为三组（n = 12）。将它们在37°C的蒸馏水中保存24小时，然后进行修整和抛光技术处理。对于预防技术，在G1组中，借助橡胶杯使用浮石和蒸馏水的混合物；在G2组中，使用Herjos-F预防膏和橡胶杯；在G3组中，使用碳酸氢盐喷射喷雾。之后，所有样本均使用Soflex弹出式磨盘重新抛光。使用粗糙度仪在三个时间点测量表面粗糙度：预防技术处理前（第一次评估）、处理后（第二次评估）以及重复抛光后（第三次评估）。
发现在第一次和第二次评估之间（p < 0.05）以及第二次和第三次评估之间（p < 0.05）粗糙度值有显著变化，表明粗糙度的变化取决于预防治疗的类型。碳酸氢盐喷射后粗糙度显著更高（p < 0.05）。
使用碳酸氢盐喷射进行预防会显著改变纳米颗粒增强树脂的粗糙度。
牙齿预防是用于去除牙菌斑和其他涂层的最常见做法。然而，清洁的一个副作用可能是表面更粗糙，容易降解和染色。正确使用预防装置并避免在树脂修复体上长时间使用可降低表面粗糙度。
