Abstract
Twelve cases of jaw cysts in children were treated at the Pedodontic Clinic of Niigata University Dental Hospital during a period of 14 years and 4 months from September 1989 to January 1994. We investigated these cases clincohistopathologically.
The results were as follows:
1. The patients consisted of 7 males and 5 females. The age of the patients ranged from 5 years and 7 months to 13 years and 4 months. Six cases were under 10 years old.
2. Five patients came with swelling of the face and three with gingival swelling as their chief complaints and other four cases came without any subjective symptoms, the lesions being discovered by X-ray examination.
3. In two cases occurrence was in the maxilla and in ten in the mandible. Both of the maxillar cases were located between the right lateral incisor and canine. All of the mandibular cases were located in the premolar region.
4. Two cases of the maxilla had injuries in the maxillar incisor region.
5. The size of the mandibular cysts ranged from 15 to 42 mm mesiodistally on panoramic X-ray film.
6. In the mandibular cysts, there were two types of X-ray findings. One was the type which enveloped developing unerupted permanent teeth and the other was a cyst existing laterally to the unerupted permanent tooth. All cases were related to diciduous molars which had received pulp therapy.
7. Treatmentt were extirpation in one case and marsupialization in eleven. All impacted permanent premolars were conserved.
8. Histopathological diagnoses indicated primordial cysts in three cases and dentigerous cysts in nine.
