The supernumerary tooth resembled maxillary central incisor with a mature root and pronounced mamellons and a talon cusp on the palatal surface.
Shallow developmental grooves were present at the junction of the talon cusp with the palatal surface of the affected tooth without any carious lesions.
The occurrence of a talon cusp is reported to be three times higher in the permanent dentition than in the primary [Gungor et al., 2000].
Talon cusp is not an integrated part of any specific syndrome, but appears to be more prevalent in the permanent dentition in patients with Rubinstein-Taybi syndrome (broad thumb-hallux syndrome), Mohr syndrome (oral-facial-digital syndrome, type 2), Sturge-Weber syndrome (encephalotrigeminal angiomatosis), and incontinentia pigmenti achromians.
Ripa, "Talon cusp
: a clinically significant anomaly," Oral Surgery, Oral Medicine, Oral Pathology, vol.
apart from showing its structure resembling to an eagles talon, it can also appear like a pyramid or conical in shape.
This condition can sometimes be confused with amelogenesis imperfects,5 dental fluorosis,9 and enamel hypoplasia.10 Talon cusp
is a well-delineated additional cusp or tubercle on the surface of an anterior tooth that extends half the distance from the cementoenamel junction to the incisal edge composed of normal enamel and dentin containing varying extensions of pulp tissue that can extend to the center of the tubercle.11 Talon cusp
may be a condition of important significance.
occurs in primary and permanent incisors (6) affecting both the sexes and may be unilateral or bilateral.
is an uncommon dental anomaly that occurs as an accessory cusp like structure from the cingulum or cemento-enamel junction of maxillary or mandibular anterior teeth in either primary or perma-nent dentition.1 The first recorded case of talon cusp
was in 1892, when Mitchell described an accessory cusp on the lingual surface of an upper central incisor as a process of horn like shape curving from the base downward to the cutting edge in a female patient.2 This anomaly has also been reported to be associated with the Rubinstein-Taybi syndrome, Mohr syndrome, Sturge-Weber syndrome and with anomalies such as odontome, dens invaginatus, double tooth, supernu-merary tooth and impaction.3
macrodontia and aberrant tooth morphology in Berardinel- li-Seipsyndrome.Oral Surg Oral Med Oral Pathol Oral Radiol Endod Jan 2008; 105(1): e41-7.