Hojo F R, Martins T C, Vieira-Junior W F, França Fmg, Turssi C P, Basting R T
Fábio Riozi Hojo, DDS, MSc student, Restorative Dentistry Department, Faculdade São Leopoldo Mandic, São Paulo, Brazil.
Thiago Colombo Martins, DDS, MSc student, Restorative Dentistry Department, Faculdade São Leopoldo Mandic, São Paulo, Brazil.
Oper Dent. 2025 Jan 1;50(1):101-114. doi: 10.2341/24-069-L.
This study evaluated the influence of six resin composite coating agents on color stability and surface roughness after toothbrushing abrasion. Discs (Ø6 mm x 2 mm) of nanofilled resin composite (Filtek Z350XT) were prepared for application of coating agents (n=10): control (absence), two surface sealants (PermaSeal and BisCover LV), two adhesive systems (Scotchbond Multi-Purpose Adhesive/3M Oral Care and Single Bond Universal), and two modeling liquids (Modeling Resin and Composite Wetting Resin). CIELab*, WID, and color change (ΔEab, ΔE00, and ΔWID) were analyzed at baseline, after finishing and polishing, after application of coating agents, after coffee staining (simulating 30 days and one year of staining), and after toothbrushing abrasion. Roughness evaluations (Ra) were performed at the initial time point, after finishing and polishing, after application of coating agents, and after toothbrushing abrasion. Surface micromorphology was evaluated (2,000×) before and after toothbrushing abrasion. Generalized linear mixed models or Kruskal-Wallis and Dunn tests (α=0.05) showed that L* decreased significantly (p<0.0001) and a* increased significantly in all the groups after staining (p<0.0001). After toothbrushing, Modeling Resin showed higher ΔEab and ΔE00 than the control, Scotchbond Multi-Purpose Adhesive, Composite Wetting Resin, PermaSeal, or BisCover LV (p<0.0001). There was a significant increase in roughness for Composite Wetting Resin, Modeling Resin, and PermaSeal after application of the agents (p<0.05), but a significant decrease for BisCover LV (p<0.05), which achieved high surface smoothness. After abrasive wear, BisCover LV showed the lowest roughness values among all agents. Composite Wetting Resin and Modeling Resin showed higher roughness than the other groups (p<0.05), and surface irregularities. In conclusion, the coating agents did not prevent coffee staining, and they also led to increased surface roughness, with only BisCover LV providing greater surface smoothness after toothbrush abrasion.
本研究评估了六种树脂复合涂层剂对刷牙磨损后颜色稳定性和表面粗糙度的影响。制备了纳米填充树脂复合材料（Filtek Z350XT）圆盘（直径6毫米×厚2毫米）用于涂覆涂层剂（n = 10）：对照组（无涂层）、两种表面封闭剂（PermaSeal和BisCover LV）、两种粘结系统（3M口腔护理多用途粘结剂/Scotchbond和通用单组分粘结剂/Single Bond Universal）以及两种造型液体（造型树脂和复合湿润树脂）。在基线、完成打磨和抛光后、涂覆涂层剂后、咖啡染色后（模拟30天和1年染色）以及刷牙磨损后分析CIELab*、WID和颜色变化（ΔEab、ΔE00和ΔWID）。在初始时间点、完成打磨和抛光后、涂覆涂层剂后以及刷牙磨损后进行粗糙度评估（Ra）。在刷牙磨损前后评估表面微观形态（2000倍）。广义线性混合模型或Kruskal-Wallis和Dunn检验（α = 0.05）表明，染色后所有组的L均显著降低（p < 0.0001），a显著增加（p < 0.0001）。刷牙后，造型树脂的ΔEab和ΔE00高于对照组、3M口腔护理多用途粘结剂、复合湿润树脂、PermaSeal或BisCover LV（p < 0.0001）。涂覆涂层剂后，复合湿润树脂、造型树脂和PermaSeal的粗糙度显著增加（p < 0.05），而BisCover LV的粗糙度显著降低（p < 0.05），其表面光滑度较高。磨损后，BisCover LV在所有涂层剂中粗糙度值最低。复合湿润树脂和造型树脂的粗糙度高于其他组（p < 0.05），且表面存在不规则性。总之，涂层剂不能防止咖啡染色，且会导致表面粗糙度增加，只有BisCover LV在刷牙磨损后能提供更高的表面光滑度。
