소구치의 intrusion시 치근 흡수 및 회복에 대한 주사전자 현미경적 연구
A SCANNING ELECTRON MICROSCOPIC STUDY OF THE ROOT RESORPTION AND REPAIR IN BICUSPID INTRUSION
구미숙,
소속 상세정보
구미숙 ( Ku Mee-Sook ) - 연세대학교 대학원 치의학과
KMID : 0361919880180020387
Abstract
The purpose of this study was to investigate the root resorption and repair pattern of human teeth under intrusive orthodontic loadings of varying magnitude and duration. 50 gms, 100 gms, 200 gms of force applied to the 96 experimental teeth with duration of 2, 5, 7, 10 weeks, after removing the arch wire and retaining during 2 and 6 weeks, experimental teeth were extracted. Results were as follows: 1. The initial resorption site was visible in the apex within 2 weeks with 50 gms, 100 gms samples. 2. The sites of resorption increased markedly with duration of the force. 3. The 50 grams samples of the all duration reveal the shallow resorption and the 100 gms samples of the all duration except 2 weeks reveal the shallow and deep resorption sites. 4. After 7 weeks with 50 gms and 100 gms, cellular cementum repair accompanied the con-tinuing resorption. 5. 2 and 6 weeks after removing the force with 200 gms, the same cellular cementum repair accompanied with 50 gms, 100 gms samples.
키워드
원문 및 링크아웃 정보
등재저널 정보