Tooth fusion

Tooth fusion arises through union of two normally separated tooth germs, and depending upon the stage of development of the teeth at the time of union, it may be either complete or incomplete. On some occasions, two independent pulp chambers and root canals can be seen. However, fusion can also be the union of a normal tooth bud to a supernumerary tooth germ. In these cases, the number of teeth is fewer if the anomalous tooth is counted as one tooth. In geminated teeth, division is usually incomplete and results in a large tooth crown that has a single root and a single canal. Both gemination and fusion are prevalent in primary dentition, with incisors being more affected.

Tooth fusion
The fusion of two deciduous teeth.
SpecialtyDentistry

Tooth gemination, in contrast to fusion, arises when two teeth develop from one tooth bud. When the anomalous tooth appears to be two separate teeth, it appears that the patient has an extra tooth, although they have a normal number of tooth roots.

In contrast to fusion, concrescence is the roots of 2 or more teeth united by cementum alone after formation of tooth crowns.

gollark: Oh, that was very imperfect, what did it do, oh bee.
gollark: Excitingly, the software is actually working goodly and well.
gollark: Great! I'll instruct bee apioforms 8373727272827282828 and onward and not onward.
gollark: Yes.
gollark: Do you play FTL?

References
  • Peirera AJ, Fidel RA, Fidel SR. Maxillary Lateral Incisor with Two Root Canals: Fusion or Gemination? Braz Dent J (2000) 11(2): 141-146.
Classification
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.