Abstract
While microdens is not rarely encountered, macrodens is very rare anormaly of dental morphology. This is a case report of macrodens occurring in the upper central incisors of a 7 year-3 month-old Japanese boy, who visited the Pedodontic Clinic of Tsurumi University Dental Hospital.
The mesiodistal width of upper left central incisor was 13.6 mm, and that of upper right central incisor was 11.0 mm. In particular, the size of upper left incisor was the largest among the macrodens reported in Japan, and those of the other teeth were also larger than those of the Japanese average.
It was found that the patient's mother and older sister also had relatively large teeth, with the report of mother's sister and father showing the same tendency. From these facts, these cases appear to have a genetic background.
Clinical examination revealed that the patient had anterior crossbite, mesial drifting of the upper first molars and linguoversion of the upper lateral incisors, which have been treated by using a chin cap and a removable orthodontic appliance.
