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

详细信息    查看全文

• 作者：David C.S. Farias^a ; Mauro A. Caldeira de Andrada^b ; Lee W. Boushell^c ; Ricardo Walter^d ; ^{walterr@unc.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Dentin bonding ; Mechanical loading ; Micro-Raman spectroscopy ; Microtensile bond strength ; Universal adhesive
• 刊名：International Journal of Adhesion and Adhesives
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：70
• 期：Complete
• 页码：53-61
• 全文大小：1893 K

文摘

This study evaluated the effect of mechanical loading on microtensile bond strengths (μTBS) 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 °C for 24 h or mechanically loaded (50,000 cycles, 50 N) prior to μTBS 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 μTBS 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.