치계낭종에 대한 임상적 연구

A CLINICAL STUDY ON THE ODONTOGENIC CYST

Numerous papers on epithelial jaw cysts have appeared in the decade since the publication in 1971 of the WHO histological calcification of odontogenic tumors, jaw cysts, and allied lesions. There have been considerable advances in our understanding of the origin, growth, clinical and radiological presentation, pathology and treatment of these lesions. There are, nevertheless, many controversial topics in this field of study. In 1981, J. J. Pindborg commented new classification with minor modification on the previous one. So, according to new classification, in order to study on the predilection, the tendency, the clinical feature in age, sex and location of the odontogenic cysts by the analysis of the biopsy cases, the another has invested, clinically and histopathologically, 371 cases of odontogenic cysts which were collected at the infirmary of dental school, SNU, for 5 years (JAN. 1, 1980-Dec. 31, 1984). The results were as following. 1. The radicular cyst showed the most frequent occurrence of 166 cases (44.74%). The followings were 84 cases (22.64%) of dentigerous cysts; residual cyst, 42 cases (11.32%); odontogenic keratocyst, 32 cases (8.66%); lateral periodontal cyst, 13 cases (3.50%), calcifying odontogenic cyst, 6 cases (1.62%); and 3 cases (0.8%) of eruption cyst. 2. On the sex predilection, male was 57.4% (213 cases) and female 42.6% (158 cases). The rate of male to female was 1.35:1. 3. The age distribution revealed the highest occurrence of 23.1% (86 cases) at 21-30 years. The average age of male was 32.6% years, female was 33.7, and the average of both sexes on 371 cases was 33.1. 4. 215 cases (58%) occurred in the maxilla and 156 (42%) in the mandible. The maxillary anterior segment and the mandibular posterior segment had more cysts. 5. There was no characteristic change in the occurrence of cysts annually. 6. Besides odontogenic keratocysts and calcifying odontogenic cysts, there were keratinizations in 8 cases of dentigerous cysts, 3 cases in radicular cysts, and 2 cases in residual cysts. Ciliated columnar epitheliums were found in 6 cases of dentigerous cysts, 1 case in calcifying odontogenic cyst, 7 cases in radicular cysts, and 6 cases in residual cysts. All were in the maxilla.