Assessment of the initial and aged dentin bond strength of universal adhesives

作者：Farias David C S; Caldeira de Andrada Mauro A; Boushell Lee W; Walter Ricardo

来源：International Journal of Adhesion and Adhesives, 2016, 70: 53-61.

DOI：10.1016/j.ijadhadh.2016.05.008

• Dentin bonding
• Mechanical loading
• Micro-Raman spectroscopy
• Microtensile bond strength
• Universal adhesive

This study evaluated the effect of mechanical loading on microtensile bond strengths (mu TBS) of universal adhesives to dentin and quantified adhesive dentin penetration using micro-Raman spectroscopy. Human molars had occlusal dentin exposed and were allocated into eight groups: All-Bond Universal and Scotchbond Universal using etch-and-rinse and self-etch approaches, Adper Prompt L-Pop, Adper Single Bond Plus, Clearfil SE Bond, and Optibond FL. Following bonding procedures and build-ups, specimens were either stored in water at 37 degrees C for 24 h or mechanically loaded (50,000 cycles, 50 N) prior to mu TBS test. Additional teeth were prepared for micro-Raman analysis of adhesive penetration and FE-SEM. Data were analyzed by two-way ANOVA and Tukey's post hoc test (P < 0.05). Mechanical loading had no deleterious effect on mu TBS with the exception of Adper Prompt L-Pop. Incomplete infiltration of the demineralized dentin was noticed for adhesives using the etch-and-rinse approach and for Scotchbond Universal in the self-etch approach.

• 出版日期2016-10