術後性上顎嚢胞のパノラマ X 線所見に関する研究

Abstract

This study was carried out to further understand the panoramic radiographic findings of postperative maxillary cysts. Of the radiographs kept in the Department of Dental Radiology at Kyushu Dental College Hospital, 160 cases of panoramic radiographs of postoperative maxillary cysts were analyzed. One hundred and sixty cases consisted of 100 males and 60 females. The results obtained by this study were as follows : 1. Of the 160 cases of postoperative maxillary cysts, 79 cases (49%) were located througout the anterior, posterior walls of the maxillary sinus and the alveolar bone. Sixty-two cases (39%) were located within the area from the anterior wall of the maxillary sinus to the alveolar bone. Two cases (1%) were located from the anterior wall to the posterior wall of the maxillary sinus. 2. Of the 160 cases of postoperative maxillary cysts, 144 cases (90%) were mono-locular. Sixteen cases (10%) were multi-locular ; 11 cases were di-locular and 5 cases were trilocular. 3. The average vertical dimension of postoperative maxillary cysts was 2.96±0.88 cm in males and 2.70±1.03 cm in females. The average horizontal dimension was 3.00±0.82 cm in males and 2.74±1.02 cm in females. There was no statistical significance in the difference between males and females in either dimension of postoperative maxillary cysts. 4. Of the 160 cases of postoperative maxillary cysts, 106 cases (66%) had a well-defined margin, while 54 cases (34%) did not. There was no significant relationship found between definitions of cyst margins and the clinical symptom of pain. 5. Of the 160 cases of postoperative maxillary cysts, 81 cases (51%) had a marginal sclerosis, while 79 cases (49%) did not. There was no significant relationship found between the marginal sclerosis of the cysts and the clinical symptoms of pain. 6. Of the 640 teeth in affected sides, 428 teeth (67%) were vital. One hundred and fifty-two teeth (24%) were missing. Sixty teeth (9%) were non-vital. 7. Of the 160 cases of postoperative maxillary cysts, 72 cases (45%) revealed an ill-defined appearance of the panoramic innominate line in affected sides, while 73 cases (46%) of an ill-defined appearance were in non-affected sides. Forty-five cases (28%) showed a thickened panoramic innominate line in affected sides, while 50 cases (31%) were seen in non-affected sides. In 11 cases (7%) the panoramic innominate line disappeared in affected sides, while in 3 cases (2%) of non-affected sides disappeared. 8. Of the 160 cases of the maxillary sinus in non-affected sides, 84 cases (53%) revealed a tri-angular shape. Forty-three cases (27%) revealed a tri-angular shape accompanied by a cyst-like radiolucency. Twenty-three cases (14%) revealed a normal shape.