科研之友
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摘要
Aim of the study: Dental hard tissues are reliable tool for age estimation. Present investigation was aimed to study cementum annulations in relation to age, sex and periodontal disease and its application in age estimation. %26lt;br%26gt;Material and methods: 103 (M = 36, F = 67) single rooted teeth extracted due to caries, orthodontic, periodontal disease and prosthetic reasons were collected from Department of Oral Health Sciences, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh. Labiolingual sections were prepared and cementum annulations were photographed under light microscope. Counting of annulations was done on image analysis software (VideoTesT - Size 5.0). Age was estimated by adding total number of annulations to tooth specific mean eruption age. Data was analyzed separately for pooled data, two sexes and with periodontal disease. %26lt;br%26gt;Results: Good correlation (r = 0.9) was observed between cementum annulation count and known age in pooled data as well as in two sexes (Males, r = 0.9 and Females, 1.0). Even, in periodontal diseased teeth, a good correlation was found (r = 0.9). In these cases, absolute mean error was approximately +/- 7.1 years as compared to +/- 5.7 years in teeth having no periodontal disease (r = 1.0). In pooled data, this error was approximately +/- 6.40 years. %26lt;br%26gt;Conclusion: It is feasible to estimate age by counting cementum annulations irrespective of sex but periodontal status of tooth has to be considered.
- 出版日期2013-12
- 单位河北医科大学
