대한치과교정학회지 (The korean journal of orthodontics)
- 제17권1호
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- Pages.85-91
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- 1987
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- 2234-7518(pISSN)
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- 2005-372X(eISSN)
Debonding에 의한 법랑질 Crack의 증가
THE INCREASE OF ENAMEL CRACK IN DEBONDING TEETH
- Yeom, Jeong-Bae (Department of Orthodontics, College of Dentistry, Pusan National University) ;
- Rhee, Byung-Tae (Department of Orthodontics, College of Dentistry, Pusan National University)
- 발행 : 1987.03.01
초록
The aim of this study was to clarify whether bonding/debonding procedure will affect the occurance of enamel crack. The frequency of enamel crack was compared between before-bonding and after-debonding on 200 human extracted teeth. Each facial surface of the tooth was divided in 9 fragments. A presence of crack, which was classified by its direction as vertical, horizontal and oblique crack, was surveyed in each fragment. Number of all cracks in facial surface was 1355 at before-bonding, and 1605 at after-debonding, so it revealed significant increase rate of
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