Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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EFFECT OF AN INTERMEDIATE BONDING RESIN AND FLOWABLE RESIN ON THE COMPATIBILITY OF TWO-STEP TOTAL ETCHING ADHESIVES WITH A SELF-CURING COMPOSITE RESIN

자가 중합 복합 레진과 두 단계 산 부식 접착제의 친화성에 대한 중간 접착제와 흐름성 레진의 효과

  • Choi, Sook-Kyung (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Yum, Ji-Wan (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Kim, Hyeon-Cheol (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Hur, Bock (Department of Conservative Dentistry, School of Dentistry, Pusan National University) ;
  • Park, Jeong-Kil (Department of Conservative Dentistry, School of Dentistry, Pusan National University)
  • 최속경 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 염지완 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 김현철 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 허복 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 박정길 (부산대학교 치의학전문대학원 치과보존학교실)
  • Published : 2009.09.30
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Abstract

This study compared the effect of an activator, intermediate bonding resin and low-viscosity flowable resin on the microtensile bond strength of a self-curing composite resin used with two-step total etching adhesives. Twenty extracted permanent molars were used. The teeth were assigned randomly to nine groups (n=10) according to the adhesive system and application of additional methods (activator, intermediate adhesive, flowable resin). The bonding agents and additional applications of each group were applied to the dentin surfaces. Self-curing composite resin buildups were made for each tooth to form a core, 5mm in height. The restored teeth were then stored in distilled water at room temperature for 24h before sectioning. The microtensile bond strength of all specimens was examined. The data was analyzed statistically by one-way ANOVA and a Scheffe's test. The application of an intermediate bonding resin (Optibond FL adhesive) and low-viscosity flowable resin (Tetric N-flow) produced higher bond strength than that with the activator in all groups. Regardless of the method selected, Optibond solo plus produced the lowest ${\mu}TBS$ to dentin. The failure modes of the tested dentin bonding agents were mostly adhesive failure but there were some cases showed cohesive failure in the resin.

이 연구의 목적은 자가 중합복합 레진과 두 단계 산 부식 접착제의 친화성에 대한 중간 접착제와흐름성 레진의 효과를 미세 인장 결합 강도를 통해 비교하는 것이었다. 20개의 발거된 대구치를 사용해 접착제와 부가적인 적용(활성제, 중간 접착제, 흐름성 레진)에 따라 XP bond 그룹 (XA, XB, XF 그룹), Prime & Bond NT 그룹 (NA, NB, NF 그룹), Optibond solo plus 그룹 (OA, OB OX 그룹)으로 나누었다. 접착제 적용 후 활성제, 중간 접착제, 흐름성 레진을 각각 적용하고 상부에 자가 중합 레진을 축성하였다. 24시간 동안 실온의 증류수에 보관 후 각 그룹당 10개의 시편을 준비하였다. 모든 시편의 미세인장 결합 강도를 측정하여 다음과 같은 결과를 얻었다. 1. 모든 그룹에서 중간 접착제와 흐름성 레진의 적용은 활성제 적용보다 더 높은 결합 강도를 보였다. 2. 선택된 방법에 관계없이, Optibond solo plus 그룹은 가장 낮은 미세인장 결합강도를 보였다. 3. 파절 양상은 대부분 접착성 파절을 보였고 일부 레진 내에서 응집성 파절을 보였다. 이번 연구의 결과로부터, 중간 접착제와 흐름성 레진의 적용이 낮은 pH를 가지는 두 단계 산 부식 접착제와 자가 중합복합 레진의 상아질 접착에 더 효과적이라 예상된다.

Keywords

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