수리된 비스 아크릴 복합 레진의 전단결합강도에 대한 지연시간, 표면처리, 수리재료의 영향
Effect of delayed time, surface treatment, and repair material on shear bond strength of repaired bis-acryl composite resin
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목적: 본 연구의 목적은 비스 아크릴 복합 레진의 수리 시 지연시간, 표면처리, 수리재료가 미치는 영향을 전단 결합강도 비교를 통해 알아보고, 폴리메틸 메타크릴레이트 레진을 이용한 비스 아크릴 복합 레진 수리의 효용성을 평가하고자 하는 것이다. 연구 재료 및 방법: 총 90개의 비스 아크릴 복합 레진 시편을 제작하였고, 지연시간, 표면처리, 수리재료에 따라 10개씩 9 개의 실험군으로 분류하였다. 각각의 시편들은 제작 직후 만능시험기를 사용하여 전단 결합강도를 측정하였고, 통계분석 프로그램(IBM SPSS statistics 20)을 이용하여 분석하였다. 전단 결합강도 측정 후 시편의 파절 단면을 관찰하였다. 결과: 시편 제작 직후, 접착제(bonding agent)를 이용하여 광중합형 유동성 복합 레진을 접착한 실험군에서 가장 높은 전단 결합강도를 보였다(17.54 ± 3.14 MPa). 결론: 비스 아크릴 복합 레진을 수리할 때 경과시간에 따라 재제작 여부를 고려해야 하며, 효과적인 수리를 위해 사용부위나 목적에 따라 알맞은 재료와 표면처리 방법을 고려하는 것이 바람직할 것이다.
Abstract
Purpose: The aim of this study was to evaluate the effect of delayed time, surface treatment, and repair materials on repair of bisacryl composite resin through comparison of shear bond strength and to evaluate the utility of bis-acryl composite resin repair using polymethyl methacrylate resin. Materials and Methods: A total of 90 bis-acryl composite resin specimens were fabricated and classified into 9 test groups, each of 10 pieces according to delayed time, surface treatment and repair material. The shear bond strength of each specimen was measured using a universal testing machine immediately after fabrication and analyzed using a statistical analysis program (IBM SPSS statistics 20). After the shear bond strength measurement, the fracture surface of the specimen was observed. Results: The highest shear bond strength (17.54 ± 3.14 MPa) was observed in the experimental group bonded immediately with a light-curing flowable composite resin using a bonding agent. Conclusion: When repairing bis-acryl composite resin, it is necessary to consider whether to remake according to the delayed time. For effective repair, it is desirable to consider appropriate materials and surface treatment methods according to the site or purpose of use.
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