Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

Tensile Strengths of Demineralized Dentin derived from Self-Priming Adhesives

Self-Priming Adhesives를 침투시킨 탈회 상아질의 인장강도

  • Lee, Hye-Yun (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University) ;
  • Yoon, Mi-Ran (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University) ;
  • Lee, Rin (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University) ;
  • Lee, Jeong (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University) ;
  • Lee, Kwang-Won (Department of Conservative Dentistry, School of Dentistry, Chonbuk National University)
  • 이혜윤 (전북대학교 치과대학 치과보존학교실) ;
  • 윤미란 (전북대학교 치과대학 치과보존학교실) ;
  • 이린 (전북대학교 치과대학 치과보존학교실) ;
  • 이정 (전북대학교 치과대학 치과보존학교실) ;
  • 이광원 (전북대학교 치과대학 치과보존학교실)
  • Published : 2006.06.30
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Abstract

The objectives of this study were to evaluate the tensile strength of resin-infiltrated demineralized dentin according to the demineralization time, and to evaluate the tensile strength of hybrid layer that is formed by infiltrating different priming adhesives or primer/adhesive into demineralizd dentin matrix. Seventy five hour-glass shaped dentin specimens were prepared in mid-coronal dentin from extracted human molars. Thirty specimens were distributed into three groups according to demineralization time - 2 hours, 4 hours and 8 hours. Each specimen was placed in primer/adhesive of All-Bond 2 for 5 hours of infiltration. Another forty-five specimens of them were demineralized in 37% phosphoric acid for 4 hours. They were randomly assigned to three experimental groups - AB, SB and OS - to designate All-Bond 2, Single Bond and One-Step. Each specimen was placed in one of three different adhesives for 5 hours of infiltration. The specimens were visible light-cured for 5 minutes, and then stored for 24 hours in distilled water at $37^{\circ}C$. After that, microtensile bond strength for each specimen was measured, and the fractured surfaces were then observed by SEM. The data were statistically analysed by one-way ANOVA and Tukey's multiple comparison test and Bonferroni's multiple comparison test. The results were as follows; 1. Tensile strength of the group demineralized for 4 hours was significantly higher than that of groups demineralized for 2 hours and 8 hours (P < .01). 3. Tensile strength of the AB group was significantly higher than that of the SB group and OS group (P < .01).

Keywords

References

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