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브라켓 간접부착술식시 레진 베이스의 표면처리가 전달결합강도에 미치는 영향
임병철(Byeong-Cheol Yim),황현식(Hyeon-Shik Hwang) 대한치과교정학회 1998 대한치과교정학회지 Vol.28 No.5
본 연구는 브라켓 간접부착술식시 레진 베이스의 표면처리에 따른 전단결합강도와 파절양상을 비교함으로써 레진 베이스 표면처리의 효과를 평가해 보기 위하여 시행되었다. 소의 하악 중절치를 포매하여 만든 90개 시편의 석고 모형에 광중합형 레진 접착제를 이용하여 금속 브라켓을 위치시킨 후 대조군은 표면처리하지 않은 반면 실험군은 레진 베이스를 Plastic와 sandblasting으로 각각 표면처리하여 시편에 옮겨 부착한 다음 만능물성 시험기를 이용하여 전단결합강도를 측정하고, 파절양상을 관찰하여 다음과 같은 결과를 얻었다. 1. 레진 베이스를 표면처리하지 않은 경우에 비하여 Plastic Conditioner와 sandbiasting으로 각각 처리한 경우 평균 전단결합강도가 높게 나타났으며 통계적으로 유의한 차이를 보였다. 2. Plastic Conditioner로 처리한 군과 sandbiasting으로 처리한 군 간의 전단결합강도는 통계적으로 유의차를 보이지 않았다. 3. 각 군의 파절양상을 접착제 잔류지수를 통하여 비교 관찰한 결과 세 군 간에 통계적 유의차를 보이지 않았다. 4. 전단결합강도와 접착제 잔류지수 간의 상관검정 결과 전단결합강도가 높은 경우 레진 베이스와 브라케 경계부에서의 파절이 빈번한 경향을 보였으나 그 통계적 유의성은 보이지 않았다. 이상의 실험결과는 브라켓 간접부착술식에서 결합강도 증가를 위하여 레진 베이스의 표면처리가 필요함을 시사하였다. The purpose of this study was to evaluate the effects of the surface treatments of resin bases in indirect bracket bonding technique by study of shear bond strengths and failure patterns. Ninety metal brackets were bonded to the stone models of specimens involving bovine lower incisor with light-cured adhesive(Light-Bond). After removal of brackets with the resin base from the stone models, the surfaces of resin bases in thirty brackets were treated with Plastic Conditioner and the surfaces of resin bases in another thirty brackets were treated with sandblaster and the remaining thirty brackets were served as controls. All brackets were transferred to the specimens and bonded using sealant. The shear bond strength was tested on universal testing machine, and failure pattern was assessed with the adhesive remnant index(ARI). The results were as follows: 1. Surface treatments of resin bases with Plastic Conditioner or sandblasting showed statistically higher shear bond strengths than no treatment group. 2. No significant difference in shear bond strength was found between Plastic Conditioner treatment and sandblasting treatment groups. 3. No significant difference in ARI scores was found among the three groups. 4. As the result of correlation analysis between shear bond strengths and ARI scores, failure at adhesive/bracket base interface tends to increase when the shear bond strength was high, but it was not significant statistically. The above results suggest that improvement of bond strength can be obtained by surface treatment of resin base in the indirect bonding technique.
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브라켓 간접부착술식시 레진 베이스의 표면처리가 전단결합강도에 미치는 영향
임병철,황현식 대한치과교정학회 1998 대한치과교정학회지 Vol.28 No.5
본 연구는 브라켓 간접부착식시 레진 베이스의 표면처리에 따른 전단결합강도와 파절양상을 비교함으로써 레진 베이스 표면처리의 효과를 평가해 보기 위하여 시행되었다. 소의 하악 중절치를 포매하여 만든 90개 시편의 석고모형에 광중합형 레진 접착제를 이용하여 금속 브라켓을 위치시킨 후 대조군은 표면처리하지 않은 반면 실험군은 레진 베이스를 Plastic Conditioner와 sandblasting으로 각각 표면처리하여 시편에 옮겨 부착한 다음 만능물성 시험기를 이용하여 전단결합강도를 측정하고, 파절양상을 관찰하여 다음과 같은 결과를 얻었다. 1. 레진 베이스를 표면처리하지 않은 경우에 비하여 Plastic Conditioner와 sandblasting으로 각각 처리한 경우 평균 전단결합강도가 높게 나타났으며 통계적으로 유의한 차이를 보였다. 2.Plastic Conditioner로 처리한 군과 sandblasting으로 처리한 군 간의 전단결합강도는 통계적 유의차를 보이지 않았다. 3. 각 군의 파절양상을 접착제 잔류지수를 통하여 비교 관찰한 결과 세 군 간에 통계적 유의차를 보이지 않았다. 4. 전단결합강도와 접착제 잔류지수 간의 상관검정 결과 전단결합강도가 높은 경우 레진 베이스와 브라켓 경계부에서의 파절이 빈번한 경향을 보였으나 그 통계적 유의성은 보이지 않았다. 이상의 실험결과는 브라켓 간접부착술식에서 결합강도 증가를 위하여 레진 베이스의 표면처리가 필요함을 시사하였다. The purpose of this study was to evaluate the effects of the surface treatments of resin bases in indirect bracket bonding technique by study of shear bond strengths and failure patterns. Ninety metal brackets were bonded to the stone models of specimens involving bovine lower incisor with light-cured adhesive(Light-Bond). After removal of brackets with the resin base from the stone models, the surfaces of resin bases in thirty brackets were treated with Plastic Conditioner and the surfaces of resin bases in another thirty brackets were treated with sandblaster and remaining thirty brackets were served as controls. All brackets were transferred to the specimens and bonded using sealant. The shear bond strength was tested on universal testing machine, and failure pattern was assessed with the adhesive remnant index(ARI). The results were as follows: 1. Surface treatments of resin bases with Plastic Conditioner or sandblasting showed statistically higher shear bond strengths than no treatment group. 2. No significant difference in shear bond strength was found between Plastic Conditioner treatment and sandblasting treatment groups. 3. No significant difference in ARI scores was found among the three groups. 4. As the result of correlation analysis between shear bond strength and ARI scores, failure at adhesive/bracket base interface tends to increase when the shear bond strength was high, but it was not significant statistically. The above results suggest that improvement of bond strength can be obtained by surface treatment of resin base in the indirect bonding technique.
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브라켓 간접부착술식시 레진 베이스의 표면처리가 진단결합강도에 미치는 영향
임병철,황현식 전남대학교 치과대학 1998 전남치대논문집 Vol.10 No.1
The purpose of this study was to evaluate the effects of the surface treatments of resin bases in indirect bracket bonding technique by study of shear bond strengths and failure patterns. Ninety metal brackets were bonded to the stone models of specimens involving bovine lower incisor with light-cured adhesive(Light-Bond). After removal of brackets with the resin base from the stone models, the surfaces of resin bases in thirty brackets were treated with Plastic Conditioner and the surfaces of resin bases in another thirty brackets were treated with sandblaster and the remaining thirty brackets were served as controls. All brackets were transferred to the specimens and bonded using sealant. The shear bond strength was tested on universal testing machine, and failure pattern was assessed with the adhesive remnant index(ARI). The results were as follows: 1. Surface treatments of resin bases with Plastic Conditioner or sandblasting showed statistically higher shear bond strengths than no treatment group. 2. No significant difference in shear bond strength was found between Plastic Conditioner treatment and sandblasting treatment groups. 3. No significant difference in ARI scores was found among the three groups. 4. As the result of correlation analysis between shear bond strengths and ARI scores, failure at adhesive/bracket base interface tends to increase when the shear bond strength was high, but it was not significant statistically. The above results suggest that improvement of bond strength can be obtained by surface treatment of resin base in the indirect bonding technique.
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