Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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EFFECT OF THE ADDITIONAL ETCHING PROCEDURE ON PUSH-OUT BOND STRENGTH OF ONE-STEP RESIN CEMENT

부가적 부식 과정이 단일 접착 과정 레진 시멘트의 접착 강도에 미치는 영향

  • Kang, Soon-Il (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Park, Jeong-Kil (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Hur, Bock (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Kim, Hyeon-Cheol (Department of Conservative Dentistry, School of Dentistry, Pusan National University)
  • 강순일 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 박정길 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 허복 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 김현철 (부산대학교 치의학전문대학원 치과보존학교실)
  • Published : 2008.09.30
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Abstract

The purpose of this study was to evaluate the effect of additional etching procedure prior to Maxcem resin cement application in indirect restoration cementation using push-out bonding strength. One hundred and two extracted human molars were used to make indirect resin restorations of gold inlay and Synfony. These restorations were cemented using Maxcem and Variolink II. Additional etching procedures were done for one group with Maxcem. Three groups have 17 specimens in both restoration types. Push-out bond strength was measured using multi-purpose tester and calculated for bonding strength per sqaure-millimeter area. The mean bonding strength values were compared using SPSS 12.0K program for one-way ANOVA and Scheffe's Test with 95% significance. Under the condition of this study, the additional etching procedure prior to usage of Maxcem resulted in reduced bond strength for both of restoration types.

이 연구의 목적은 단일 접착 과정의 레진 시멘트인 Maxcem을 제조사의 지시대로 사용하는 것과 부가적인 산 부식과정을 추가하여 접착을 시도함에 있어 그 임상적 접착 강도를 알아보고자 하는 것이었다. 치아 우식에 이환되지 않은 120개의 상하악 구치를 사용하여 간접 수복물 제작을 위한 와동을 형성하고 금인레이와 간접복합레진(Synfony) 수복물을 제작하였다. 실험군은 수복물의 종류마다 사용한 시멘트의 종류와 방식에 따라 세 군으로 분류하였다. 최종적으로 102개의 와동 시편에 수복물의 접착을 위해 Maxcem을 사용한 군, 인산으로 부가적인 산부식 후에 Maxcem을 사용한 군, 그리고 대조군으로 다단계 전-산부식 (total-etching) 시멘트인 Variolink II 를 사용하여 접착한 실험군으로 각 군 당 17개씩으로 분류하였다. 자체 제작한 만능시험기로 push-out 접착 강도를 측정하고 와동 접착 표면적으로 나누어 단위 면적당 결합력으로 산출하였다. SPSS 12.0K 프로그램을 사용하여 one-way ANOVA와 95% 신뢰도의 Scheffe's Test로 각 실험군의 접착력를 비교하였다. 이 실험의 조건하에서는 Maxcem을 사용할 때, 간접수복물의 종류에 관계없이, 제조사의 지시 외에 부가적인 산부식 과정은 접착 강도를 감소시키는 역효과를 유발하였으며 더욱 강한 접착력을 필요로 하는 경우는 다단계 접착제를 사용하여 산부식 과정과 접착제 적용, 시멘트 도포 등을 분리하여 사용하는 것이 바람직하다.

Keywords

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  2. Shear bond strength of a self-adhesive resin cement to resin-coated dentin vol.51, pp.1, 2013, https://doi.org/10.4047/jkap.2013.51.1.27