Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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COMPARATIVE BOND STRENGTH OF SINGLE STEP ADHESIVES TO DIFFERENT DENTINAL DEPTHS

상아질의 깊이에 따른 단일 단계 접착제의 결합강도 비교

  • Cho, Young-Gon (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
  • Jin, Cheol-Hee (Department of Conservative Dentistry, College of Dentistry, Chosun University) ;
  • Min, Jung-Bum (Department of Conservative Dentistry, College of Dentistry, Chosun University)
  • 조영곤 (조선대학교 치과대학 치과보존학교실) ;
  • 진철희 (조선대학교 치과대학 치과보존학교실) ;
  • 민정범 (조선대학교 치과대학 치과보존학교실)
  • Published : 2005.07.01
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Abstract

This study compared the microtensile bond strength $({\mu}TBS)$ of single step adhesives to different dentin depths. Superficial or deep dentin was exposed in 30 molar teeth by sectioning immediately under the DEJ or 1.5mm area from central pit, respectively. After polishing with 600-grit SiC paper, the dentin surfaces were assigned to three groups: AQ group-AQ Bond, L-Pop group-Adper Prompt L-Pop, Xeno group-Xeno III. The bonded specimens were sectioned into sticks and subjected to ${\mu}TBS$ testing with a crosshead speed of 1mm/minute. The results of this study were as follows; The ${\mu}TBS$ to superficial dentin was higher than that to deep dentin in all group. The ${\mu}TBS$ of Xeno group was significantly higher than that of L-Pop group and AQ group in both superficial and deep dentin (p<0.05).

본 연구는 단일 단계 접착제의 표층과 심층 상아질에 대한 미세인장 결합강도의 차이를 평가하기 위해서 시행되었다. 발거된 상$\cdot$하악 대구치의 교합면측에 있는 표층 상아질과 심층 상아질을 각각 15개씩 노출시킨 후, 사용된 접착제에 따라 AQ군, L-Pop군, Xeno군으로 분류하여 복합레진을 축조하였다. 각 시편은 상아질과 복합레진 계면의 단면적이 $1.0mm^2$이 되도록 절단하였고, 각 군 당 20개의 시편을 사용하였다. 각 군의 미세인장 결합강도의 측정하여 다음과 같은 결과를 얻었다. 표층과 심층 상아질 모두에서 Xeno III는 다른 접착제보다 가장 높은 결합강도를 나타내었다 (p<0.05). 또한 모든 접착제는 심층 상아질에서 보다 표층 상아질에서 더 높은 결합강도를 나타내었으나 이들 간에 통계학적 인 유의성은 접착제의 종류에 따라 다르게 나타났다.

Keywords

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