Tulunoglu O, Cankala D U, Ozdemir R C
Department of Pedodontics, Faculty of Dentistry, University of Gazi, Ankara, Turkey.
J Indian Soc Pedod Prev Dent. 2007 Mar;25(1):52-5. doi: 10.4103/0970-4388.31993.
Talon cusp is a developmental dental anomaly thought to arise as a result of evagination on the surface of a tooth crown before calcification has occurred. The etiology remains unknown. The incidence is 0.04-10%. Any tooth may have a talon cusp but most of the cases involve maxillary lateral incisors, with some instances of bilateral involvement. The anomaly has been reported to be rare in the mandible. This article reports four cases of talon cusp. The first and the second cases describe bilateral involvement of talon cusp on palatal surfaces of maxillary primary centrals; in the third case talon tubercle occurs on palatal surfaces of both maxillary permanent lateral incisors and the maxillary left central incisor and in the last case a talon cusp in the lingual surface of mandibular permanent lateral incisor.
畸形中央尖是一种发育性牙体异常，被认为是由于在牙冠钙化前表面出现外翻所致。病因尚不清楚。发病率为0.04%-10%。任何牙齿都可能出现畸形中央尖，但大多数病例累及上颌侧切牙，部分病例为双侧受累。据报道，这种异常在下颌中罕见。本文报告了4例畸形中央尖病例。第一例和第二例描述了上颌乳中切牙腭侧表面双侧出现畸形中央尖；第三例中，上颌恒侧切牙和上颌左中切牙腭侧表面均出现畸形结节；最后一例是下颌恒侧切牙舌侧表面出现畸形中央尖。
