Abstract
The present clinical statistic study was performed on 120 pediatric patients who underwent oral surgery at Asunaro Pediatric Dental Clinic in Toyama city over a period of 3 years (2005〜2007).
The results were summarized as follows:
1. The cases of surgery for outpatients had been increasing every year, and the boys to girls ratio was7:5.
2. The removal of impacted supernumerary teeth accounted for 47.5 percent of all surgeries.
3. This study mainly dealt with the removal of supernumerary teeth located around the central incisors, because they accounted for 89.5 percent of all impacted supernumerary teeth. The conclusions were as follows ; (1) The ratio of boys to girls was 5 : 2, (2) 78.4 percent of the cases had one supernumerary tooth, (3) 71.0 percent of the supernumerary teeth were inverted on X-ray films, and (4) the average surgical age was 7.0 years old.
We classified the position of the impacted supernumerary teeth using orthopantomograms. We classified the position of the impacted supernumerary teeth in three categories using orthopantomograms.This classification was useful to estimate the relationship between the vertical position of the impacted supernumerary teeth and the age, and moreover to speculate the difficulty of the surgery.
