Age estimation from teeth
Eruption of deciduous (baby or milk) teeth and permanent (adult) teeth occurs at fairly regular intervals during the subadult years of development (see the figure above, deciduous teeth are shaded). Therefore, age estimation of subadults based dental eruption is quite accurate.
While tooth wear and permanent tooth loss can occur in subadults, these degenerative changes are usually associated with adults. Loss of permanent teeth and accompanying bone resorption of the alveolar bone of the maxilla and/or mandible are often associated with old age. Tooth wear or dental attrition most often occurs in adults, but the age of onset depends on diet and other environmental factors. This process leads to loss of outer white tooth enamel and exposure of the yellowish dentine of the pulp cavity, especially on the cusps of the teeth. The older an individual is, the more dentine is exposed due to tooth wear.
Image is scanned from Tim D. White, Michael T. Black & Pieter A. Folkens: Human Osteology, Academic Press, 3 ed. (2011)
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