Restorative Dentistry and Endodontics
- 제21권1호
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- Pages.150-160
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- 1996
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
주파수의존형 전자근관장측정기의 정확도에 관한 연구
The accuracy of the frequency dependent type apex locator
- Park, Ju-Huun (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
- Roh, Byoung-Duck (Department of Conservative Dentistry, College of Dentistry, Yonsei University) ;
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Lee, Seoung-Jong
(Department of Conservative Dentistry, College of Dentistry, Yonsei University)
- 발행 : 1996.03.20
초록
The present study was to evaluate the accuracy of the frequency dependent type apex locator, Root-ZX. The subjects included 505 root canals of 238 teeth treated by the Department of Conservative Dentistry, and 22 human premolars which were schduled to be extracted for the orthodontic reasons. The results were as follows ; 1. The working lengths determined by Root-ZX were compared with radiographic readings. Of the total 505 root canals, 66 % showed coincidence within