Journal of Periodontal and Implant Science
- 제24권1호
- /
- Pages.165-177
- /
- 1994
- /
- 2093-2278(pISSN)
- /
- 2093-2286(eISSN)
상악 제1 소구치의 치근면 함요도 및 치근표면적에 관한 연구
A STUDY OF THE DEPTH OF THE ROOT CONCAVITY AND ROOT SURFACE AREA MEASUREMENT OF THE MAXILLARY FIRST PREMOLAR
- Lim, Sang-Cheol (Dept. of Periodontology, College of Dentistry, Kyung-Hee University) ;
- Kwon, Young-Hyuk (Dept. of Periodontology, College of Dentistry, Kyung-Hee University) ;
- Lee, Man-Sup (Dept. of Periodontology, College of Dentistry, Kyung-Hee University)
- 발행 : 1994.04.30
초록
To investigate the depth of the root concavity and root surface area of the maxillary first premolar, 40 maxillary first premolars were used. All the teeth which extracted because of advanced periodontal disease and orthodontic treatment procedure, were sectioned every 1.5mm from cementoenameljunction to the apex with hard tissue microtome. Each sectioned root was taken photograph with slide film, and projected for measuring with a calibrated digital Curvi-Meter. The root surface area, percentage of the RSA and the linear variation of the RSA were calibrated for each 1.5mm section. Linear variation of the depth of root concavity was measured on mesial and distal root surface for each section using computer-aided digitizer. The results were as follows. 1. The total mean root length of maxillary first premolar was 13.48mm. Mean buccal root length of 2-rooted tooth was 12.59mm, mean palatal root length was 12.73mm, and mean root length of single rooted tooth was 13.78mm. 2. The total mean root surface area of maxillary first premolar was
키워드