SHEAR BOND STRENGTH OF SELF-ETCHING ADHESIVES TO TOOTH ENAMEL WITH ADDITIONAL ETCHING

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Journal of the Korean Academy of Pediatric Dentistry 2009;36(4):514-521.
Published online November 30, 2009.

SHEAR BOND STRENGTH OF SELF-ETCHING ADHESIVES TO TOOTH ENAMEL WITH ADDITIONAL ETCHING

부산대학교 치의학전문대학원 소아치과학교실

부가적 산부식 시간에 따른 자가 산부식 접착제의 법랑질 전단결합강도

이형숙, 김성기, 이동수, 김신, 정태성

부산대학교 치의학전문대학원 소아치과학교실

Correspondence: ,

Received: 19 June 2009 • Accepted: 8 October 2009

Abstract

The aim of this study was to evaluate the bonding ability of two self etch systems to human primary and permanent enamel and the effect of additional acid etching time. Exfoliated, caries free human primary molar(n=65) and permanent molar extracted (n=65) were used. prepared enamel specimens were randomly divided into 2 test groups and a control group. The control group(n=10) were treated with 35% phosphoric acid gel and Scotchbond Multi-purpose adhesive. Experimental groups(self-etching systems) were subdivided into 6 groups(each n=10) according to additional etching time(0s, 5s, 10s, 15s, 20s, 30s). The result were as follows : 1) The shear bond strengths of the self-etching adhesives(Clearfil SE Bond, Adper Prompt L-pop) without additional etching were lower than control group(Scotch Bond Multipurpose). 2) Between the same self-etch adhesive groups, additional etched groups showed higher shear bond strength 3) There was no significant difference between primary and permanent enamel. In conclusion, bond strength of self-etch adhesives to enamel could be increased with additional etching.

Key Words: elf-etching adhesive, Additional etching, Shear bond strength, Enamel