Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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Effect of 2% chlorhexidine application on microtensile bond strength of resin composite to dentin using one-step self-etch adhesives

2% 클로르헥시딘 적용이 한 단계 자가부식 접착제를 이용한 복합 레진의 상아질에 대한 미세인장 결합강도에 미치는 효과

  • Jang, Soon-Ham (Department of Conservative Dentistry, Pusan National University School of Dentistry) ;
  • Hur, Bock (Department of Conservative Dentistry, Pusan National University School of Dentistry) ;
  • Kim, Hyeon-Cheol (Department of Conservative Dentistry, Pusan National University School of Dentistry) ;
  • Kwon, Yong-Hun (Department of Dental Materials, Pusan National University School of Dentistry) ;
  • Park, Jeong-Kil (Department of Conservative Dentistry, Pusan National University School of Dentistry)
  • 장순함 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 허복 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 김현철 (부산대학교 치의학전문대학원 치과보존학교실) ;
  • 권용훈 (부산대학교 치의학전문대학원 치과재료학교실) ;
  • 박정길 (부산대학교 치의학전문대학원 치과보존학교실)
  • Received : 2010.09.21
  • Accepted : 2010.10.20
  • Published : 2010.11.30
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Abstract

Objectives: This study examined the effect of 2% chlorhexidine on the ${\mu}TBS$ of a direct composite restoration using one-step self-etch adhesives on human dentin. Materials and Methods: Twenty-four extracted permanent molars were used. The teeth were assigned randomly to six groups (n = 10), according to the adhesive system and application of chlorhexidine. With or without the application of chlorhexidine, each adhesive system was applied to the dentin surface. After the bonding procedure, light-cure composite resin buildups were produced. The restored teeth were stored in distilled water at room temperature for 24 hours, and then cut and glued to the jig of the microtensile testing machine. A tensile load was applied until the specimen failed. The failure mode was examined using an operating microscope. The data was analyzed statistically using one-way ANOVA, Student's t-test (p < 0.05) and Scheffet's test. Results: Regardless of the application of chlorhexidine, the Clearfil $S^3$ Bond showed the highest ${\mu}TBS$, followed by G-Bond and Xeno V. Adhesive failure was the main failure mode of the dentin bonding agents tested with some samples showing cohesive failure. Conclusions: The application of 2% chlorhexidine did not affect the ${\mu}TBS$ of the resin composite to the dentin using a one-step self-etch adhesive.

연구목적: 이 연구의 목적은 2% 클로르헥시딘 적용이 한 단계 자가부식접착제를 이용한 직접 복합 레진 수복의 미세 인장 강도에 미치는 영향을 평가하는 것이었다. 연구 재료 및 방법: 24개의 발거된 대구치를 사용하여 3종류의 한 단계 자가부식접착제 (Clearfil $S^3$ Bond, Xeno V, G-Bond) 를 클로르헥시딘을 적용한 그룹과 적용하지 않은 그룹, 총 6개의 그룹으로 나누었다. 클로르헥시딘을 적용하거나 적용하지 않고 그 상부에 각각의 접착제를 적용하고 광중합 복합 레진으로 수복하였다. 24시간 동안 실온의 증류수에 보관한 후 각 그룹당 10개의 시편을 준비 하여 모든 시편의 미세인장 결합 강도를 측정하였다. 결과: 2% 클로르헥시딘 적용이 한 단계 자가부식접착제를 이용한 복합레진 수복의 미세인장 결합강도에 영향을 미치지 않았다. 클로르헥시딘 적용과 상관없이 Clearfil $S^3$ Bond가 가장 높은 미세인장 결합강도 값을 나타내었고 그 다음은 GBond, Xeno V 순이었다. 파절 양상은 대부분 접착성 파절을 보였고 일부는 응집성 파절을 보였다. 결론: 2% 클로르헥시딘 적용이 한 단계 자가부식접착제를 이용한 복합레진 수복의 미세인장 결합강도에 영향을 미치지 않았다.

Keywords

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