A STUDY ON THE RELATIVE SHEAR BOND STRENGTHS OF SOME ADHESIVE RESTORATIVE MATERIALS TO PRIMARY ENAMEL AND DENTIN

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Journal of the Korean Academy of Pediatric Dentistry 2000;27(2):237-245.
Published online May 31, 2000.

A STUDY ON THE RELATIVE SHEAR BOND STRENGTHS OF SOME ADHESIVE RESTORATIVE MATERIALS TO PRIMARY ENAMEL AND DENTIN

수종 접착성 수복재의 유치 법랑질과 상아질에 대한 상대적 접착력의 비교연구

김승미, 김신, 정태성

부산대학교 치과대학 소아치과학교실

Abstract

For the purpose of comparing the bond strengths of some tooth adhesive restoration materials on primary enamel and dentin, 4 kinds (7 brands) of restorative materials including a composite resin (Z 100), a conventional glass ionomer cement (Chem-Flex), 2 brands of resin-modified glass ionomer cements (Fuji II LC-I, Vitremer), and 3 brands of compomers(Dyract AP, F2000, Compoglass) were investigated using UTM for measuring the shear bond strengths. Additionally the failure modes were examined by histologically observing the fractured surfaces of each specimen. The following results were obtained. 1. The shear bond strengths of Z 100 to the primary enamel were higher than those of other experimental materials except Fuji II LC-I, which showed significantly higher bond strength than Chem-Flex or Vitremer (P<0.05). 2. The shear bond strengths of Z 100 to the primary dentin were higher than those of other experimental materials except Dyract AP and Fuji II LC-I, both of which showed significantly higher shear strength than Chem-Flex or Vitremer (P<0.05). 3. The shear bond strengths of all restorative materials except Dyract AP showed relatively higher values to enamel surface than to dentin surface. In Dyract AP, the reverse was true significantly. 4. All materials examined showed cohesive failures except some Chem-Flex and Vitremer, which showed adhesive failures.

Key Words: Adhesive restoration, Shear bond strength, Primary teeth, Enamel, Dentin