Int J Esthet Dent. 2024 Aug 2;19(3):282-293.
The objective of the present study was to evaluate the influence of different adhesive strategies regarding shear bond strength (SBS) of provisional resin--based materials bonded to the enamel surface as well as on the enamel surface roughness.
Bovine incisors were randomly divided into six groups (n = 10) according to the adhesive strategy used: BRControl (bis-acrylic resin); Spot-etch+BR (spot-etch + bis-acrylic resin); Spot--etchSB2+BR (spot-etch + adhesive + bis-acrylic resin); Spot-etchZ350Flow+BR (spot-etch + flowable composite resin + bis-acrylic resin); SBU+BR (universal adhesive + bis-acrylic resin); Spot-etchSBMP+Z350 (spot-etch + adhesive + composite resin). The enamel surface roughness was determined by a surface profil-ometer. An SBS test was performed in a universal testing machine, and failure modes were classified under magnification. The SBS data were analyzed by one-way analysis of variance (ANOVA). A paired t test was used for enamel surface roughness intragroup comparisons, and the Friedman one-way repeated meas-ures analysis of variance by ranks was used for differences in enamel surface roughness between groups, with the Tukey post hoc test (a = 0.05).
BRControl had the lowest SBS values (MPa), with a significant difference (P ≤ 0.001) from the other groups. Spot-etch+BR had the highest SBS values but with no significant differences from the other groups in which the spot-etch technique was also used. Adhesive failure mode was predominant for all groups. BRControl had the lowest surface roughness difference, significantly different (P = 0.001) from all the other groups.
Spot-etch and other adhesive strategies could be applied to increase the SBS values of provisional restorations to enamel compared with no surface pretreatment. However, the adhesive strategy may change the enamel surface roughness, revealing the importance of cleaning the tooth surface.
本研究的目的是评估不同的粘接策略对临时树脂基材料与釉质表面的粘接剪切强度（SBS）以及对釉质表面粗糙度的影响。
根据使用的粘接策略，将牛切牙随机分为六组（n=10）：BRControl（双丙烯酸树脂）；Spot-etch+BR（点状蚀刻+双丙烯酸树脂）；Spot-etchSB2+BR（点状蚀刻+粘接剂+双丙烯酸树脂）；Spot-etchZ350Flow+BR（点状蚀刻+可流动性复合树脂+双丙烯酸树脂）；SBU+BR（通用粘接剂+双丙烯酸树脂）；Spot-etchSBMP+Z350（点状蚀刻+粘接剂+复合树脂）。用表面轮廓仪测定釉质表面粗糙度。在万能试验机上进行 SBS 试验，并在放大倍数下对破坏模式进行分类。用单向方差分析（ANOVA）对 SBS 数据进行分析。用配对 t 检验对组内釉质表面粗糙度进行比较，用弗里德曼等级重复测量方差分析对组间釉质表面粗糙度进行比较，并用 Tukey 事后检验（a=0.05）。
BRControl 的 SBS 值（MPa）最低，与其他组有显著差异（P≤0.001）。Spot-etch+BR 的 SBS 值最高，但与其他使用点状蚀刻技术的组无显著差异。所有组均以粘接破坏模式为主。BRControl 的表面粗糙度差值最小，与其他所有组均有显著差异（P=0.001）。
与无表面预处理相比，点状蚀刻和其他粘接策略可应用于增加临时修复体与釉质的 SBS 值。然而，粘接策略可能会改变釉质表面粗糙度，这表明清洁牙面的重要性。
