Gemination can be described as teeth ‘twinning’. In dental context, gemination refers to a developmental irregularity in which a single tooth germ divides resulting in a bifid crown on a single root, that is, two teeth develop together from a single tooth bud. The two parts of the double tooth will be exact images of each other. It is seen as a cleft crown on x-rays where the radiopaque enamel outlines the invagination. Source: Denta Gamma
The cause(s) of gemination, which affects between 0.1% and 2.5% of the population, are unknown.
Contributing factors have been suggested to include vitamin deficiency, hormonal irregularities, infection or inflammation of areas near to the developing tooth bud, drug effects, genetic predisposition, and radiotherapy.
Ideas for new topics, and suggested additions / corrections for old ones, are always welcome.
If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !
Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.
( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)