São Paulo State University (UNESP), School of Dentistry, Araçatuba.
Eur J Prosthodont Restor Dent. 2022 May 29;30(2):87-95. doi: 10.1922/EJPRD_2275Catanoze09.
To evaluate the adhesion of Streptococcus mutans (S. mutans) on lithium disilicate ceramics, submitted to different intraoral polishing protocols, and the degree of surface smoothness obtained.
Fifty lithium disilicate specimens were divided into 5 groups (n=10): G1-Glaze Group (positive control); G2-Glaze Group + Wear + Glaze; G3-Wear Group (negative control); G4-Ceramisté Wear Group; G5-Optrafine Wear Group. Surface roughness (Ra - μm) was evaluated and the surface characteristics were assessed using a scanning electron microscope (SEM); to assess S. mutans biofilm, the number of cultured cells was evaluated by counting colony-forming units (CFU/mL). The data underwent one-way ANOVA followed by Tukey's test (P⟨.05).
There was a significant difference in the surface roughness of all groups compared with G3. There was no significant difference between the G4 and G5 groups that received polishing. G1 group had the lowest mean roughness values. There was a difference in Log values (CFU/mL) between the G3 group and the groups that received glaze (G1 and G2). The G3 group had the highest adhesion of S. mutans (4.53 Log).
The most effective polishing protocol after wear is glazing, presenting the lowest roughness and CFU/mL values.
评估经不同口腔内抛光方案处理后的锂硅基陶瓷的黏附变形链球菌（S. mutans）的黏附情况，并评估其表面光滑度。
将 50 个锂硅基陶瓷试件分为 5 组（n=10）：G1-上釉组（阳性对照）；G2-上釉+磨损+上釉组；G3-磨损组（阴性对照）；G4-Ceramisté 磨损组；G5-Optrafine 磨损组。评估表面粗糙度（Ra-μm），并用扫描电子显微镜（SEM）评估表面特征；通过菌落形成单位（CFU/mL）计数来评估 S. mutans 生物膜的数量。数据采用单因素方差分析，然后进行 Tukey 检验（P<.05）。
与 G3 相比，所有组的表面粗糙度均有显著差异。接受抛光的 G4 和 G5 组之间没有显著差异。G1 组的平均粗糙度值最低。G3 组与接受上釉的组（G1 和 G2）之间的 Log 值（CFU/mL）有差异。G3 组的 S. mutans 黏附（4.53 Log）最高。
磨损后最有效的抛光方案是上釉，其粗糙度和 CFU/mL 值最低。
