Dens evaginatus

Dens evaginatus
Classification and external resources
ICD-10	K00.2
ICD-9-CM	520.2

Dens evaginatus is a condition found in teeth where the outer surface appears to form an extra bump or cusp. Premolars are more likely to be affected than any other tooth. This may be seen more frequently in Asians, but almost exclusively in Down Syndrome. The pulp of the tooth may extend into the dens evaginatus. There is a risk of the dens evaginatus chipping off in normal function. Hence this condition requires monitoring as the tooth can lose its blood and nerve supply as a result and may need root canal treatment.

References

Kahn, Michael A. Basic Oral and Maxillofacial Pathology. Volume 1. 2001.

Developmental tooth disease/tooth abnormality (K00–K01, 520)

Quantity	Anodontia/Hypodontia Hyperdontia

Shape and size	Concrescence Fusion Gemination Dens evaginatus/Talon cusp Dens invaginatus Enamel pearl Macrodontia Microdontia Taurodontism Supernumerary roots

Formation	Dilaceration Regional odontodysplasia Turner's hypoplasia Enamel hypoplasia Ectopic enamel

Other hereditary	Amelogenesis imperfecta Dentinogenesis imperfecta Dentin dysplasia Regional odontodysplasia

Other	Dental fluorosis Tooth impaction

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