Estimation of age based on study of tooth structures is a widely followed approach in forensics owing to the ability of these hard tissues to withstand changes over long periods. Several aspects can be evaluated for age estimation including degree of attrition, root transparency, secondary dentin deposition, root resorption, cementum apposition, etc. Cemental apposition occurs throughout life by deposition of alternating layers of varying mineralization known as tooth cementum annulations (TCA). Counting of cementum annulations is gaining more acceptance as compared to other methods in that it is least influenced by external factors. This article focuses on this particular aspect of age estimation.

Keywords: Age Estimation, Tooth Cementum Annulations, Incremental Lines, Forensic Odontology