Open Journal Systems

Cover Image

Bilateral supernumerary cusps on deciduous and permanent molars: A case report with a short review

Roopa K. B, Poornima P, Sidhant Pathak, Neena I. E


Extra cusps or the central cusps have been recognized as supernumerary cusps by many authors. Extra cusps are usually seen on premolars. Central cusps are of clinical importance as it could be associated with some anomalies that can lead to clinical complications. Extra or accessory cusps rarely pose any problem to the dentist. Even though, it may not cause an emergency in the clinic fracture of this cusp may lead to clinical problems. We present this rare case with bilateral central cusps both on permanent and deciduous molars. Review regarding central cusp, need for continuous follow‑up are also been included.


Deciduous molar; occlusal surface; permanent molar; supernumerary cusp

Full Text:



Thesleff I, Vaahtokari A, Partanen AM. Regulation of organogenesis. Common molecular mechanisms regulating the development of teeth and other organs. Int J Dev Biol 1995;39:35 50.

Matalova E, Tucker AS, Sharpe PT. Death in the life of a tooth. J Dent Res 2004;83:11 6.

Smith MM, Coates MI. Evolutionary origins of the vertebrate dentition: Phylogenetic patterns and developmental evolution. Eur J Oral Sci 1998;106 Suppl 1:482 500.

Koussoulakou DS, Margaritis LH, Koussoulakos SL. A curriculum vitae of teeth: Evolution, generation, regeneration. Int J Biol Sci 2009;5:226 43.

Kallay J. Extra cusp formation in the human dentition. J Dent Res 1966;45:1381 94.

Ooshima T, Ishida R, Mishima K, Sobue S. The prevalence of developmental anomalies of teeth and their association with tooth size in the primary and permanent dentitions of 1650 Japanese children. Int J Paediatr Dent 1996;6:87 94.

Hunter JP, Guatelli Steinberg D, Weston TC, Durner R, Betsinger TK. Model of tooth morphogenesis predicts carabelli cusp expression, size, and symmetry in humans. PLoS One 2010;5:e11844.

Hargreaves K, Goodis H, editors. Seltzer and Bender’s Dental Pulp. 1st ed. Chicago: Quintessence Publishing; 2002. p. 13 7.

Thesleff I, Keränen S, Jernvall J. Enamel knots as signaling centers linking tooth morphogenesis and odontoblast differentiation. Adv Dent Res 2001;15:14 8.

Thesleff I. Epithelial mesenchymal signalling regulating tooth morphogenesis. J Cell Sci 2003;116:1647 8.

Guttal KS, Naikmasur VG, Bhargava P, Bathi RJ. Frequency of developmental dental anomalies in the Indian population. Eur J Dent 2010;4:263 9.

Vasudev SK, Goel BR. Endodontic management of dens evaginatus of maxillary central incisors: A rare case report. J Endod 2005;31:67 70.

Echeverri EA, Wang MM, Chavaria C, Taylor DL. Multiple dens evaginatus: Diagnosis, management, and complications: Case report. Pediatr Dent 1994;16:314 7.

Yip WK. The prevalence of dens evaginatus. Oral Surg Oral Med Oral Pathol 1974;38:80 7.

Scott GR, Turner CG II. The Anthropology of Modern Human Teeth: Dental Morphology and its Variation in Recent Human Populations. Cambridge: Cambridge University Press; 1997. p. 35 7.

Nirmala SV, Challa R, Velpula L, Nuvvula S. Unusual occurrence of accessory central cusp in the maxillary second primary molar. Contemp Clin Dent 2011;2:127 30.


  • There are currently no refbacks.