Do phosphoric acid esters affect the immediate enamel bond strengths?

• Published in: Journal of adhesion science and technology 2016-11, Vol.30 (22), p.2498-2510
• Main Authors: Xu, Jingqiu, Liang, Bing, Hoth-Hannig, Wiebke, Zhang, Ling, Jin, Xiaoting, Wang, Chaoyang, Fu, Baiping, Hannig, Matthias
• Format: Article
• Language: English
• Subjects: Adhesive bonding; adhesives; Analysis of variance; Bonding strength; bovine enamel; Chemical bonding; Crystallites; Enamels; Esters; Etching; micro-tensile bond strengths; phosphoric acid esters; Resins
• ISSN: 0169-4243; 1568-5616
• DOI: 10.1080/01694243.2016.1185228

Purpose: To investigate the effects of phosphoric acid esters (PAEs)-containing primers on the micro-tensile bond strengths (MTBS) of etched enamel, the micro-morphologies of the resin-enamel interfaces, and the enamel surfaces. Materials and Methods: Thirty-three bovine incisors were used in this study. After the labial enamel surfaces were highly polished, they were etched, water sprayed, and air-dried. Afterward, the enamel surfaces were treated with or without (control) one of three PAEs-containing primers (40%MDP, Ivoclar Vivadent; Resulcin AquaPrime A + B, DMG; Xeno V, Dentsply), water sprayed, and air-dried. Subsequently, an adhesive Heliobond (Ivoclar Vivadent) was applied and resin composite (Core Build-up, Bisco) was placed incrementally. They were prepared into multiple beams of about 1 × 1 × 8 mm for MTBS tests. The enamel surfaces and resin-enamel interfaces were analyzed by SEM and TEM. The data were analyzed by two-way ANOVA and LSD test. Results: Using PAEs-containing primers could increase the enamel MTBS (p