Restorative Dentistry and Endodontics
- Volume 15 Issue 2
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- Pages.104-114
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- 1990
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
A SCANNING ELECTRON MICROSCOPIC EVALUATION OF THE ROOT CANAL FILLING WITH ULTRASONIC ENDODONTIC INSTRUMENT
초음파 근관기구를 이용한 근관충전법의 근관폐쇄능에 관한 주사 전자현미경적 연구
- Choi, La-Young (Dept. of Conservative Dentistry, College of Dentistry, Wonkwang University) ;
- Lee, In-Sook (Dept. of Conservative Dentistry, College of Dentistry, Wonkwang University)
- Published : 1990.10.25
Abstract
The purpose of this study was to evaluate the adaptation of root canal filling material to the dentinal wall of root canal and to compare the sealing ability of the root canal filling materials using ultrasonic endodontic instrument with injection-molded thermoplasticized gutta-percha filling method and lateral condensation method. Fifty fresh human single root exlracted for orthodontic treatment, were randomly selected, and instrumented by step-back technique. And then, the teeth were divided into 5 groups according to each root canal filling methods. In the experimental group 1 and group 2, the root canals were filled with gutta perdia cases using ultrasonic instrument with and without sealer. In the experimental group 3 and 4, using jection-moldeed thermoplasticized gutta-percha method by obtul
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