Ageing is an irreversible process that is by nature a part of an individual’s ontogenesis. It is characterized by morphological and functional changes. In general, a change of a structure results in a change of a function. Life consists of separate developmental stages, each of them having its distinctive structural and functional changes.This applies for oral cavity too.Teeth are often the last remains of a human body that can endure for ages and render useful information about human beings, since they differ from most of body tissues in their limited regeneration potential. There are only few exceptions, namely some animal species that have preserved the regeneration potential of hard dental tissues.

        Key words: geriatric dentistry – dental enamel – dentin – dental cementum – dental pulp