Abstract
Clinical observation of the postoperative buccal cyst in 21 cases was made in the past three years. 1) In the clinincal and statistical observation of 21 cases on the patients age, affected side and duration, the results were almost as same as those heretofore reported. 2) The clinical and statistical observation of patients sex, the number of female was greater than that of male. 3) The subjective symptome was mostly pain and swelling of the face or oral region. 4) State when examined was mostly pain and swelling of the face or oral rgion. 5) Radiographic appearence was found no peculiar change, but radiograpic examination with a contrast medium revealed the outline of cyst, extent of cyst and enlargement direction of cyst. 6) Operation method was modified Caldwell-Lucs method in practice and operation wou nds were closed secondarily. 7) Operation findings : 1. Infection was observed in 7 out of 21 cases. 2. Maxillary sinus was observed in 13 out of 21 cases and it was compressed in upper outside in most cases. 3. Cysts of localized in maxillary sinus in more than a half of cases. 4. Lower nasal meatus counter opening was observed in 4 out of 21 cases, but it was closed 17 cases. 5. With regard to the relation between maxillary sinus and teeth, penetration of the root of tooth in to the maxillary sinus was found in 10 cases and the focus of the root apex was in contact with maxillary sinus at the basi-maxillary sinus or the cyst wall in the maxillary sinus in 3 cases.
