Unusual case of bilateral talon cusp associated with dens invaginatus

Abstract

This paper presents a rare case of bilateral talon cusp in permanent maxillary central incisors, one on the labial and another on the lingual surface of each tooth. The condition was associated with dens invaginatus in a maxillary permanent lateral incisor, but no developmental syndrome was identified. The left central incisor required no treatment because the aesthetic appearance was satisfactory and neither occlusal interferences nor caries were present. After careful investigation of the right lateral incisor, a sealant was applied. Root canal treatment was indicated for the right central incisor that had a wide open apex with thin, weak, divergent walls, and an apical radiolucency.

Oro‐dental features as useful diagnostic tool in Rubinstein–Taybi syndrome

“…Talon cusps have been described in association with dens invaginatus [de Sousa et al, 1999;Lorena et al, 2003], in Ellis-van Creveld syndrome [Hattab et al, 1998], and in Temtamy preaxial brachydactyly syndrome [Temtamy et al, 1998]. Our series reached a 50-70% diagnosis rate for this anomaly.…”

Conservative Treatment of an Invaginated Maxillary Lateral Incisor with a C-Shaped Canal Using Cone Beam Computed Tomography: A case report

“…In the third type, the invagination penetrates into the apical region throughout the root which develops a second foramen in apical or periodontal region without direct relationship with the pulp [15,16]. Invagination makes the irritant substances get reach an area which is separated from the pulpand covered by a thin layer of enamel and dentin.…”

Talon cusp in a deciduous upper incisor from a medieval Portuguese child

“…Talon cusp can appear alone or associated with other dental anomalies (somatic and odontogenic), such as pegshaped lateral incisors, unerupted canines and mesiodens, supernumerary teeth, megadont, dens invaginatus, complex odontoma and impaction, hypodontia, partial anodontia, periodontopathy, malocclusion, shovel-shaped incisors, and exaggerated Carabelli cusp (Lomçali et al, 1994;Al-Omari et al, 1999;De Sousa et al, 1999;Hegde and Kumar, 1999;Lehl, 1999;Hattab and Hazza'a, 2001;Segura-Egea et al, 2003b;Dash et al, 2004). Syndromes sometimes associated with talon cusp include Rubinstein-Taybi syndrome, Mohr syndrome, Ellis-Van Creveld syndrome, Sturge-Weber syndrome, and incontinentia pigmenti achromians (Lomçali et al, 1994;Hattab et al, 1995;Güngör et al, 2000;Dash et al, 2004).…”

“…According to the conventional definition, this developmental malformation is manifested as a projection of an accessory cusplike structure from the cingulum area or cementoenamel junction (CEJ) on maxillary or mandible teeth (Hattab et al, 1995;Lehl, 1999;Hattab and Hazza'a, 2001;Glavina and Skrinjaric, 2005). More recently, talon cusp has also been described as affecting the labial surface of the tooth (McNamara et al, 1997;Turner, 1998;De Sousa et al, 1999;Lee et al, 2003;Patil et al, 2004;Glavina and Skrinjaric, 2005;Llena-Puy and Forner-Navarro, 2005). Even rarer is the presence of facial and lingual talon cusps in the same tooth (Abbott, 1998;Dunn, 2004).…”