Syndontia with talon cusp

Abstract

Teeth are specialized structural components of the craniofacial skeleton. Developmental defects occur either alone or in combination with other birth defects. Macrodontia of anterior teeth may occur as an isolated condition or as a result of fusion or gemination and can occur in the primary or permanent dentition. Fusion is more commonly seen in the anterior maxillary region. This case presentation reports a case of fusion of a supplemental tooth to one in the normal series in conjunction with a talon cusp. This condition is extremely rare and has been reported at fourth occasion in the literature. The etiology, prevalence, clinical features, and management of the aforementioned anomalies have been reviewed in detail. Early diagnosis of this condition is important because it may cause clinical problems, such as esthetic concerns and tooth crowding.

Keywords: Fusion; gemination; macrodontia; talon cusp.

Figure 1

Tooth number 11 presented with wide crown and incisal notch. Maxillary central incisor on the contralateral side was in crossbite with mandibular left central incisor

Figure 2

Talon cusp on the palatal surface of affected tooth

Figure 3

Intraoral periapical radiograph showing a large anomalous tooth superimposed by lateral incisor palatally

Figure 4

Orthopantomograph showing an impacted supplemental tooth on the contralateral side

Figure 5

Orthodontic appliance for the correction of crossbite on contralateral side and for alignment of teeth

Figure 6

Endodontic therapy of affected tooth with selective grinding of talon cusp

Figure 7

Hemisection of the affected tooth