Satoru Watanabe, DDS, Department of Operative Dentistry, Nihon University Graduate School of Dentistry, Tokyo, Japan.
*Toshiki Takamizawa, DDS, PhD, Department of Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan.
Oper Dent. 2024 Mar 1;49(2):231-244. doi: 10.2341/23-096-L.
This study aimed to investigate bond performance of various resin luting cement (RLC) systems on enamel and dentin in different etching modes and to compare the RLC-tooth interface morphology using scanning electron microscopy (SEM).
The self-adhesive RLC systems used in combination with universal adhesives were as follows: Scotchbond Universal Adhesive Plus + RelyX Universal (3M Oral Care) and Clearfil Universal Bond Quick ER + SA Luting Multi (Kuraray Noritake Dental). These RLC systems were also used alone as self-adhesive RLC systems without universal adhesives (self-adhesive mode). The conventional RLC systems for comparison materials were as follows: BeautiBond Xtream + ResiCem EX (Shofu) and Tooth Primer + Panavia V5 (Kuraray Noritake Dental). Twelve specimens were prepared for each group to measure shear bond strength (SBS) in different etching modes. A stainless-steel rod was used as a substitute for indirect restorations. Bonded specimens were allocated to baseline (stored for 24 hours) and artificially aged (thermocycling [TC] for 10,000 cycles) groups. Representative treated tooth surfaces and RLC-tooth interfaces were observed using SEM.
Three-way analysis of variance (ANOVA) revealed that all the factors (etching mode, storage period, and RLC system) had a significant influence on the enamel SBS values (p<0.05). Enamel SBS was significantly higher in etch-&-rinse (ER) mode than in self-etch (SE) mode, regardless of RLC system or storage period. Three-way ANOVA showed that all the factors had a significant influence on the dentin SBS values (p<0.001). Most RLC systems showed significantly higher dentin SBS in SE mode than in ER mode, regardless of storage period. However, the combination with Scotchbond Universal Adhesive Plus and RelyX Universal showed no significant difference in SBS values between etching modes at the baseline and showed a significantly higher SBS value in ER mode than in SE mode after TC.
The self-adhesive RLC systems with universal adhesives tended to show higher enamel and dentin bond performance than the self-adhesive RLC systems alone. The morphology of treated tooth surfaces and resin cement-tooth interfaces were dependent on the RLC system and etching mode used. The RLC systems with primer application showed a thin, high-density layer above the intact dentin in both etching modes, suggesting chemical interaction.
本研究旨在探讨不同蚀刻模式下各种树脂水门汀（RLC）系统在牙釉质和牙本质上的粘结性能，并通过扫描电子显微镜（SEM）比较 RLC-牙界面形态。
本研究使用的自粘结 RLC 系统与通用粘结剂联合使用，包括 Scotchbond Universal Adhesive Plus + RelyX Universal（3M Oral Care）和 Clearfil Universal Bond Quick ER + SA Luting Multi（Kuraray Noritake Dental）。这些 RLC 系统也单独用作无通用粘结剂的自粘结 RLC 系统（自粘结模式）。作为比较材料的传统 RLC 系统如下：BeautiBond Xtream + ResiCem EX（Shofu）和 Tooth Primer + Panavia V5（Kuraray Noritake Dental）。每组制备 12 个样本，以测量不同蚀刻模式下的剪切粘结强度（SBS）。不锈钢棒被用作间接修复体的替代品。将粘结样本分为基线（储存 24 小时）和人工老化（热循环[TC] 10,000 次）组。使用 SEM 观察代表性处理后的牙面和 RLC-牙界面。
三因素方差分析（ANOVA）显示，所有因素（蚀刻模式、储存期和 RLC 系统）对牙釉质 SBS 值均有显著影响（p<0.05）。无论 RLC 系统或储存期如何，蚀刻-冲洗（ER）模式的牙釉质 SBS 值均显著高于自蚀刻（SE）模式。三因素 ANOVA 显示，所有因素对牙本质 SBS 值均有显著影响（p<0.001）。大多数 RLC 系统在 SE 模式下的牙本质 SBS 值显著高于 ER 模式，无论储存期如何。然而，Scotchbond Universal Adhesive Plus 和 RelyX Universal 的组合在基线时在两种蚀刻模式下的 SBS 值没有显著差异，并且在 TC 后 ER 模式下的 SBS 值显著高于 SE 模式。
具有通用粘结剂的自粘结 RLC 系统在牙釉质和牙本质粘结性能方面倾向于优于单独使用的自粘结 RLC 系统。处理牙面和树脂水门汀-牙界面的形态取决于使用的 RLC 系统和蚀刻模式。在两种蚀刻模式下，具有底漆应用的 RLC 系统在完整牙本质上方均呈现出薄而高密度的层，表明存在化学相互作用。
