Dens evaginatus

Dens evaginatus
Other namesTuberculated cusp, accessory tubercle, occlusal tuberculated premolar, Leong's premolar, evaginatus odontoma, occlusal pearl[1][2]
SpecialtyDentistry

Dens evaginatus is a rare odontogenic developmental anomaly that is 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.[3] It could occur unilaterally or bilaterally. [1] Dens evaginatus (DE) typically occurs bilaterally and symmetrically.[4] This may be seen more frequently in Asians[3] (including Chinese, Malay, Thai, Japanese, Filipino and Indian populations).[4]

The prevalence of DE ranges from 0.06% to 7.7% depending on the race.[3] It is more common in men than in women,[3] more frequent in the mandibular teeth than the maxillary teeth.[1] Patients with Ellis-van Creveld syndrome, incontinentia pigmenti achromians, Mohr syndrome, Rubinstein-Taybi syndrome and Sturge Weber syndrome are at a higher risk of having DE.[3][2]

  1. ^ a b c Echeverri EA, Wang MM, Chavaria C, Taylor DL (July 1994). "Multiple dens evaginatus: diagnosis, management, and complications: case report". Pediatric Dentistry. 16 (4): 314–7. PMID 7937267.
  2. ^ a b Hülsmann M (March 1997). "Dens invaginatus: aetiology, classification, prevalence, diagnosis, and treatment considerations". International Endodontic Journal. 30 (2): 79–90. doi:10.1111/j.1365-2591.1997.tb00679.x. PMID 10332241.
  3. ^ a b c d e Manuja N, Chaudhary S, Nagpal R, Rallan M (June 2013). "Bilateral dens evaginatus (talon cusp) in permanent maxillary lateral incisors: a rare developmental dental anomaly with great clinical significance". BMJ Case Reports. 2013: bcr2013009184. doi:10.1136/bcr-2013-009184. PMC 3702862. PMID 23813995.
  4. ^ a b Levitan ME, Himel VT (January 2006). "Dens evaginatus: literature review, pathophysiology, and comprehensive treatment regimen". Journal of Endodontics. 32 (1): 1–9. doi:10.1016/j.joen.2005.10.009. PMID 16410059.