Aetiology of supernumerary teeth: a literature review
- 725 Downloads
Supernumerary teeth are teeth, or tooth-like structures that have either erupted or remain unerupted in addition to the 20 primary and 32 permanent teeth.
This paper attempts to (a) provide an overview of the proposed hypotheses and the current understanding of the aetiology of supernumerary teeth, and (b) review the published cases of supernumerary teeth occurring in families.
No studies have been able to distinguish between different aetiologies for the different locations of supernumerary teeth, while, from a developmental or molecular perspective, the proposed hypotheses may be plausible and explains the origin of different types of supernumerary teeth.
The only clearly evident feature, based on the existing published reports, is that it is logical to state that supernumerary teeth have a genetic component in their aetiology.
KeywordsAetiology Supernumerary teeth Hyperdontia Genes Heredity
- Babacan H, Öztürk F, Polat HB. Identical unerupted maxillary incisors in monozygotic twins. Am J Orthod Dentofac Orthop. 2010;138:498–509.Google Scholar
- Bateson W. On numerical variation in teeth, with a discussion of conception of homology. Proc Zool Soc Lond. 1982;102–115.Google Scholar
- Black GV. Supernumerary teeth. Dent Summ. 1909;29:83–110.Google Scholar
- Brodie AG. Two unusual cases of supernumerary teeth. Angle Orthod. 1936;6:209–11.Google Scholar
- Bruning LJ, Dunlop L, Mergele ME. A report of supernumerary teeth in Houston, Texas school children. J Dent Child. 1957;24:98–105.Google Scholar
- Bucci E, Martina R. True hyperdontia in monochorial twins. Clinical case. Arch Stomatol (Napoli). 1975;16:305–13.Google Scholar
- Finn SB. Clinical Pedodontics. Philadelphia: W. B. Saunders. 1967. pp. 477–506.Google Scholar
- Gysel C. Mesiodentes familiales. Revue Belge Med Dent. 1963;18:929–60.Google Scholar
- Hammond-Williams C. Supernumerary tooth heredity. Br Dent J. 1934;56:500.Google Scholar
- Isaacson KG, Thom AR, Horner K, Whaites EJ. Orthodontic radiographs-guidelines, 3rd ed. London: British Orthodontic Society. 2008.Google Scholar
- Jarvinen E, Tummers M, Thesleff I. The role of the dental lamina in mammalian tooth replacement. J Exp Zool B Mol Dev Evol. 2009;312:281–91.Google Scholar
- Kawashima A, Nomura Y, Aoyagi Y, Asada Y. Hereditary may be one of the etiologies of supernumerary teeth. Ped Dent J. 2006;16:115–7.Google Scholar
- Molleda Medrano N. Algunos casos de dientes supernumerarios. Rev Esp Estom. 1956:244–48.Google Scholar
- Nadal-Valldaura A. Un caso de dos hermanos con dientes supernumerarios. Rev Esp Estom. 1961;9:101–4.Google Scholar
- Osborn JW. Morphogenetic gradients: field versus clones. In Development, Function and Evolution of teeth (Edited by Butler PM and Joysey KA). Academic Press, New York 1978: p. 171.Google Scholar
- Osburn AS. Original communications on supernumerary teeth in man and other mammals. Dent Cosmos. 1912;54:1192–203.Google Scholar
- Peterkova R, Churava S, Lesot H, et al. Revitalization of a diastemal tooth primordium in Spry2 null mice results from increased proliferation and decreased apoptosis. J Exp Zool B Mol Dev Evol B. 2009;312:292–308.Google Scholar
- Ranta R, Ylipaavalniemi P. Development course of supernumerary premolars in childhood: report of two cases. J Dent Child. 1981;48:385–8.Google Scholar
- Schön F. Supernumerary incisors in uniovular twins, and their treatment by means of electrosurgery. Quintessence Int Dent Dig. 1974;5:13–8.Google Scholar
- Sumida T, Ishikawa A, Hamakawa H. Impacted teeth in the same location of monozygotic twins: a report of two cases. WebmedCentral Dentistry 2010;1:WMC001048; http://www.webmedcentral.com/article_view/1048.