Operative Dentistry Division, Department of Restorative Dentistry, Piracicaba Dental School, State University of Campinas, Av. Limeira, 901, Piracicaba, SP, 13414-903, Brazil.
Department of Operative Dentistry, School of Dentistry, University of Guarulhos, R. Nilo Peçanha 81, Guarrulhos, SP, 07011-040, Brazil.
Clin Oral Investig. 2017 Jun;21(5):1707-1715. doi: 10.1007/s00784-016-1966-1. Epub 2016 Oct 7.
This study aimed to evaluate the ultramorphological characteristics of tooth-resin interfaces and the bond strength (BS) of multimode adhesive systems to enamel and dentin.
Multimode adhesives (Scotchbond Universal (SBU) and All-Bond Universal) were tested in both self-etch and etch-and-rinse modes and compared to control groups (Optibond FL and Clearfil SE Bond (CSB)). Adhesives were applied to human molars and composite blocks were incrementally built up. Teeth were sectioned to obtain specimens for microtensile BS and TEM analysis. Specimens were tested after storage for either 24 h or 1 year. SEM analyses were performed to classify the failure pattern of beam specimens after BS testing.
Etching increased the enamel BS of multimode adhesives; however, BS decreased after storage for 1 year. No significant differences in dentin BS were noted between multimode and control in either evaluation period. Storage for 1 year only reduced the dentin BS for SBU in self-etch mode. TEM analysis identified hybridization and interaction zones in dentin and enamel for all adhesives. Silver impregnation was detected on dentin-resin interfaces after storage of specimens for 1 year only with the SBU and CSB.
Storage for 1 year reduced enamel BS when adhesives are applied on etched surface; however, BS of multimode adhesives did not differ from those of the control group. In dentin, no significant difference was noted between the multimode and control group adhesives, regardless of etching mode.
In general, multimode adhesives showed similar behavior when compared to traditional adhesive techniques. Multimode adhesives are one-step self-etching adhesives that can also be used after enamel/dentin phosphoric acid etching, but each product may work better in specific conditions.
本研究旨在评估牙-树脂界面的超微形貌特征和多模式粘接系统对牙釉质和牙本质的粘接强度（BS）。
多模式粘接剂（Scotchbond Universal[SBU]和 All-Bond Universal）分别在自酸蚀和酸蚀-冲洗模式下进行测试，并与对照组（Optibond FL 和 Clearfil SE Bond[CSB]）进行比较。将粘接剂应用于人磨牙上，并逐步构建复合块。将牙齿切割成试件，以进行微拉伸 BS 和 TEM 分析。在储存 24 小时或 1 年后对试件进行测试。对 BS 测试后梁试件的失效模式进行 SEM 分析。
酸蚀增加了多模式粘接剂的牙釉质 BS；然而，储存 1 年后 BS 下降。在任何评估期内，多模式和对照组在牙本质 BS 方面均无显著差异。仅在自酸蚀模式下，SBU 储存 1 年后牙本质 BS 降低。TEM 分析在所有粘接剂中均在牙本质和牙釉质中识别出了杂交和相互作用区。仅在储存 1 年后，SBU 和 CSB 试件的牙本质-树脂界面有银染。
当在酸蚀表面应用粘接剂时，储存 1 年后牙釉质 BS 降低，但多模式粘接剂的 BS 与对照组无差异。在牙本质中，无论酸蚀模式如何，多模式和对照组粘接剂之间均无显著差异。
总体而言，与传统粘接技术相比，多模式粘接剂表现出相似的行为。多模式粘接剂是一步自酸蚀粘接剂，也可在牙釉质/牙本质磷酸酸蚀后使用，但每种产品在特定条件下可能效果更好。
