Age estimation by cemental annulation rings

Abstract

Context:Tooth plays a pivotal role in the identification of a person when all other remains are ruined by natural or unnatural causes. Dental evidence can contribute to age estimation in forensic dentistry. Estimating the age of an individual with the help of a tooth for identification proves beneficial. Alternating light and dark bands seen on the cementum have been shown to be proportionate to the age of the patient in number. This was done to evaluate the cementum annulation in age determination.Aims:This study aimed to determine the age of an individual using tooth cementum annulation.Materials and Methods:In this study, twenty extracted teeth were collected and all the clinical details of the patient such as age, sex, and chief complaint were recorded. The collected teeth was preserved in formalin overnight and then washed under tap water before they were sectioned. The area selected for counting was observed under 10 × objective of light microscope, and photomicrographs were taken for the counting of the lines. At the time of analysis, the age of the patient was not disclosed to the observer.Statistical Analysis Used:Student's t-test was used for statistical analysis.Results:This study showed the correlation between the actual age of the individual and the estimated age using tooth cementum annulation method and showed significant statistical value.Conclusion:Incremental lines found in cementum can be used for age estimation in forensic dentistry.

Tooth Cementum Annulation: A Literature Review

“…Since the technique of TCA was originally devised on animal dentition, this might explain why some scholars originally adopted some of the same protocols on human teeth. The studies that have more recently tried longitudinal sections on human teeth (Kasetty et al [88]; Schug et al [99]; Goutham et al [84]; Geetha et al [82]; Kulkarni et al [89]; Mohan et al [94]; Swetha et al [101]; Mahalakshmi Loganathan et al [92]) show a variety of results (see Table 3 and Supplementary Materials Table S1). Amongst the ones listed here, the most successful seem to be those where sections were not stained or demineralised (Goutham et al [84]; Geetha et al [82]; Mallar et al [93]).…”