Restorative Dentistry and Endodontics
- Volume 25 Issue 4
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- Pages.527-535
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- 2000
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
EFFECTS OF SMEAR LAYER AND DENTIN PRIMERS ON THE SEALING ABILITY OF ROOT CANAL
근관 밀폐도에 미치는 도말층 및 상아질 접착강화제의 영향
- Yang, Jin-Suck (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University) ;
- Hwang, In-Nam (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University) ;
- Kim, Won-Jae (Dept. of Oral Physiology, School of Dentistry, DSRI, Chonnam National University) ;
- Oh, Won-Mann (Dept. of Conservative Dentistry, School of Dentistry, DSRI, Chonnam National University)
- 양진석 (전남대학교 치과대학 치과보존학교실, 치의학 연구소) ;
- 황인남 (전남대학교 치과대학 치과보존학교실, 치의학 연구소) ;
- 김원재 (전남대학교 치과대학 구강생리학교실, 치의학 연구소) ;
- 오원만 (전남대학교 치과대학 치과보존학교실, 치의학 연구소)
- Published : 2000.12.05
Abstract
The purpose of this study was to evaluate effects of smear layer and dentin primers on the sealing ability of root canals. 126 extracted human teeth with single, straight canals and mature apices were used. The Samples were first classified into six groups as follows: presence of smear layer; absence of smear layer; Scotchbond Bond Multi-Purpose; All Bond 2; Mac Bond 2; Clearfil Liner Bond 2. A Positive control was also established. All teeth except the control group were then obturated with thermoplasticized gutta-percha and AH26. Electrochemical and dye penetration technique were later used to evaluate the degree of micro leakage through the root canal. Seventy teeth were then immersed in a 1% potassium chloride solution and An external power supply(DC 10 V) was then applied to the circuit for the electrochemical microleakage test. The degree of Microleakage was determined over period of 28 days before being evaluated. In total, 48 teeth were submitted to the dye infiltration technique. All specimen were suspended in 2% methylene blue dye for 1 week before being longitudinally split. The degree of dye infiltration was measured under a stereo microscope at