1 0 0 0 OA 抜歯による上顎洞穿孔症例の臨床的検討
- 著者
- 平田 康 木野 孔司 長岡 俊哉 宮本 亮三 吉増 秀實 天笠 光雄
- 出版者
- 口腔病学会
- 雑誌
- 口腔病学会雑誌 (ISSN:03009149)
- 巻号頁・発行日
- vol.68, no.3, pp.249-253, 2001-09-30 (Released:2010-10-08)
- 参考文献数
- 10
- 被引用文献数
- 19 20
Oro-maxillary sinus perforation occurs occasionally at the extraction of a maxillary tooth, and it may be a cause of maxillary sinusitis or antro-oral fistula. Our purpose was to investigate the most frequent site of perforation, and to understand the clinical course of patients after perforation.We examined 2, 038 maxillary teeth extracted from 1, 337 patients (473 males and 864 females) at the First Department of Oral and Maxillofacial Surgery, Tokyo Medical and Dental University, from January 1991 to December 1993.Perforation occurred in 77 of all 2, 038 teeth (3.8%) . Of these, 38 teeth were from males (38/733 ; 5.2%), and 39 were from females (39/1, 305 ; 3.0%) . The perforation rate was significantly higher in males.Perforation occurred most often with extraction of an upper first molar, and in the third decade of life. The perforation rate gradually decreased with higher age.We classified 38 cases into 3 categories according to panorama X-P : 1) The tip of the root crossed over the bottom line of the maxillary sinus (29 cases), 2) Not crossed over distinctly (4 cases), 3) Just lie on, or whether the tip of the root crossed over the bottom line of the maxillary sinus was not distinct (5 cases) .As to treatment, 30 perforations (39.0%) closed spontaneously in the course of observation, irrigation with physiological saline was used in 43 cases (55.8%), radical sinusotomy accompanied by closure of the perforation was performed in 4 cases, and only flap closure was used in 7 cases. There were no cases of relapse.
1 0 0 0 OA 109. 肩関節外転における肩甲骨の動きと制限因子
1 0 0 0 OA 魚類の尾部下垂体研究とその医学貢献
- 著者
- 岡 俊哉
- 出版者
- 日本歯科大学
- 雑誌
- 日本歯科大学紀要. 一般教育系 = Bulletin of the Nippon Dental University. General education (ISSN:03851605)
- 巻号頁・発行日
- vol.48, pp.5-12, 2019-03-30
A swelling similar to that of the human hypophysis occurs in the caudal spinal cord of teleost fish. This is referred to as the “urophysis” and forms the caudal neurosecretory system together with neurosecretory cells (Dahlgren cells) located upstream of the urophysis and the fiber path from the cells. The details of the function of this system is still unknown, and study of the urophysis in fishes has declined. Amazingly, it was found that urotensin II, a peptide hormone isolated and purified from the fish urophysis, was expressing also in humans, as a potent vasoconstrictor. Recently, research on peptide hormones isolated from the urophysis has been actively performed for development of new drugs for human medicine. In this paper, this elusive fish urophysis and the caudal neurosecretory system will be discussed, and a new idea regarding the function of this system will be proposed.