HE STUDY ON SHEAR BOND STRENGTH OF VARIOUS DENTIN BONDING SYSTEMS IN PRIMARY DENTIN

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Journal of the Korean Academy of Pediatric Dentistry 2005;32(2):293-299.
Published online May 31, 2005.

HE STUDY ON SHEAR BOND STRENGTH OF VARIOUS DENTIN BONDING SYSTEMS IN PRIMARY DENTIN

유치 상아질에 대한 수종의 상아질 결합제의 전단결합강도에 대한 연구

강선희, 이광희, 김대업

원광대학교 치과대학 소아치과학교실.치의학연구소

Correspondence: ,

Abstract

It is important to reduce chair time and procedure in restorative treatment for children. Composite resin is not only used in esthetic restoration of anterior teeth but also posterior teeth by its improved physical property. The 7th generation dentin bonding system was recently developed in order to simplify three steps which is needed to bond composite resin to tooth surface-etchant, primer, adhesive. We compared shear bond strengths of 4, 5, 6, 7th generations dentin bonding systems. The primary dentin was pretreated with 4, 5, 6, 7th generation dentin bonding systems. Then composite resin was cured to the specimen using molds 2.5mm in diameter and 2mm in height. Thermocycling was performed and shear bond strength was finally measured. The results were as follow; 1. The mean values of shear bond strengths in 5th generation dentin bonding system(group 2) were greater than those of 4, 6, 7th generation dentin bonding system(group 1, 3, 4). The differences were statistically significant. 2. The mean values of shear bond strengths in 4th generation dentin bonding system(group 2) were greater than those of 6, 7th generation dentin bonding system(group 1, 3, 4). But, the differences were not statistically significant. 3. Between the mean values of shear bond strengths in 6, 7th generation dentin bonding system(group 3, 4) were similar.

Key Words: 7th generation dentin bonding system, Shear bond strength, Primary dentin