Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
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Effect of delayed time, surface treatment, and repair material on shear bond strength of repaired bis-acryl composite resin

수리된 비스 아크릴 복합 레진의 전단결합강도에 대한 지연시간, 표면처리, 수리 재료의 영향

  • Park, Ji-su (Department of Prosthodontics, College of Dentistry, Wonkwang University) ;
  • Lee, Jae-In (Department of Prosthodontics, College of Dentistry, Wonkwang University)
  • 박지수 (원광대학교 치과대학 치과보철학교실) ;
  • 이재인 (원광대학교 치과대학 치과보철학교실)
  • Received : 2018.02.06
  • Accepted : 2018.02.28
  • Published : 2018.06.30
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Abstract

Purpose: The aim of this study was to evaluate the effect of delayed time, surface treatment, and repair materials on repair of bis-acryl 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 ($17.54{\pm}3.14MPa$) 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.

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 9개의 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($17.54{\pm}3.14MPa$). 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.

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