Abstract
Deciduous canines are generally single rooted. The present case report describes a primary dentition with four birooted primary canines, which is extremely rare.
A six-year 4-month old boy was brought to the Pedodontic clinic, Tokyo Dental College Suidobashi Hospital with a chief complaint of swelling in the maxillary right quadrant. The child showed normal development. His elder brother and parents were negative in terms of medical history or dental anomalies.
The clinical and radiographic findings were as follows:
The patient was in stage Hellman's dental age III A, in the development of the dentition classified by Hellman. He showed normal development mixed dentition.
The clinical crowns were normal in appearance. The mesiodistal widths of the maxillary deciduous canines were a little larger than the regular size, and the mandibular deciduous cannines were the standard size.
Radiographic examination revealed two separate roots on each maxillary and mandibular bilateral deciduous canine. Therefore, all deciduous canines were found to be birooted. No other dental anomalies were detected with exception of impacted supernumerary teeth in the maxilla. Both roots were approximately of equal shape and size. Each root of these canines was narrow apart in comparison with the deciduous molar apart.
In this case, each deciduous canine appeared to have definite single pulp chamber, but separated mesial and distal root canals.
Cases of maxillary and mandibular bilateral deciduous canines with two roots are extremely rare. Only two reports have been published since 1978. The etiology of this condition is unknown.
