Do Self-Etching Adhesive Systems Improve Reliability of Dentin Bonding? In Vitro Study

Czech version

Authors: P. Bradna; M. Dudek; A. Roubíčková; M. Mikšovský; R. Vrbová; D. Houšová
Authors‘ workplace: Výzkumný ústav stomatologický 1. LF UK a VFN, Praha
Published in: Česká stomatologie / Praktické zubní lékařství, ročník 108, 2008, 5, s. 109-116

Overview

A shear bond strength and fractography analysis was used to evaluate reliability of nine total- and self-etching adhesives OptiBond FL, Gluma Comfort Bond, Prime&Bond NT, AdheSE, Adper Prompt, Adper Prompt L-Pop, Clearfil SE Bond, Xeno III and iBond. A critical bond strength at which 10 % samples failed was used as a measure of the adhesive reliability. Significant differences in reliability and also in mode of their fracture were found between total- and self-etching systems and also in adhesives in these groups. The highest reliability and mixed mode of fracture were found with group of classical total-etch 3- and 2-step adhesives OptiBond FL a Gluma Comfort Bond and also with 2-step self-etching AdheSE and Clearfil SE Bond. With these adhesives both high bond strength and highly predictable properties can be expected. Compromised reliability as manifested in decreased bond strength and predominantly less energetically demanding cohesive fractures of the adhesive layer or less frequently mixed fractures occurred for Adper Promt, iBond a Xeno III. On the other hand, Prime & Bond NT and especially Adper Prompt L-Pop in blisters were characterized as systems with a low reliability. Adhesive properties of self-etching systems might decrease as a result of aging processes during their shelf-life.

Key words:
dentin - adhesives - bond strength - reliability

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Article was published in

Czech Dental Journal

2008 Issue 5