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Buccal and palatal talon cusps with pulp extensions on a supernumerary primary tooth

¹ Department of Paediatric Dentistry, Faculty of Dentistry, Hacettepe University, Ankara, Turkey; ² Department of Periodontology, Endodontology and Cariology, Institute of Dentistry, University of Basel, Basel, Switzerland

*Correspondence to: Zafer C Çehreli, Gazi M Kemal Bulvari, 61/11, 06570 Maltepe, Ankara, Turkey; Email: zcehreli{at}yahoo.com

Received 11 August 2005; revised 22 December 2005; accepted 4 January 2006

This paper reports an unusual occurrence of talon cusp on a supernumerary primary incisor, presenting on both labial and palatal sides. The tooth was scheduled for extraction due to its interference with the occlusion. Morphometric analysis of the taloned cusps was performed on digitized replicas of the tooth crown using open-source image analysis toolkit (ImageJ). Further non-destructive investigation of the taloned crown under cone-beam X-ray computed tomography revealed pulpal extensions in both talon cusps.

Keywords: talon cusp; supernumerary tooth; labial; computer-assisted image analysis; ImageJ; X-ray computed tomography