下顎骨の放射線障害に関する実験的研究 : 特に抜歯の影響について
スポンサーリンク
概要
- 論文の詳細を見る
Radiation hazard of the mandible often occurs after radiation therapy for oral cancer. Much literature about mandibular radiation hazards has been written since Regaud first reported a case of radiation hazard of the mandible in 1922. However, genesis of the radiation hazard of the mandible has never been resolved. It is generally thought that a high radiation dose causes the mandibular radiation hazard, and the tooth extraction after radiation therapy might accelerate the radiation hazard of the mandible. There are many theories about the influence of tooth extraction following radiation therapy to the mandible. The purpose of this study is to investigate the influence of the tooth extraction after irradiation to the mandible experimentally. The following results were obtained. 1. In a group whose teeth were extracted immediately after irradiation, healing of the extraction wound was delayed. However, severe radiation hazard was not recognized macroscopically. 2. In a group whose teeth were extracted after 2 weeks following irradiation, radiation osteomyelitis was recognized macroscopically. All of these cases showed disturbances of healing of the extraction wound. 3. The early radiographical finding on the mandible, in which the teeth had been extracted after irradiation, was osteoporosis and it was accelerated by infection. 4. Bone resorption caused by osteoclast was observed microscopically in a group whose teeth were extracted after irradiation. Osteoporotic bone resorption was accelerated by infection, and was decreased by subsidings of infection and blood vessel hazard. 5. Sequestration was one of the results of radiation osteomyelitis, which was caused by the disturbance of blood circulation due to periosteum detachment. Sequestrum was caused by invasion of the healthy gingiva. 6. Though healing of the extraction wound was delayed by irradiation, new bone was formed in the alveolar socket if the blood clot occupied the alveolar socket. 7. Radiation hazard of the mandible became more severe when the mandible was accompanied by infection.
- 九州歯科学会の論文
- 1987-06-25
著者
関連論文
- 22. サブトラクション法を応用した顎関節側斜位規格 X 線写真(第 44 回九州歯科学会総会講演抄録)
- 22∿1110 サブトラクション法を応用した顎関節側斜位規格 X 線写真
- 5. サブトラクション法による唾液腺造影像(第 44 回九州歯科学会総会講演抄録)
- 5∿1040 サブトラクション法による唾液腺造影像
- 6. 口内法 X 線写真上に描出される上顎洞底部の脈管像について(第 43 回九州歯科学会総会講演抄録)
- 6∿0950 歯科用 X 線写真上に描出される上顎洞底部の脈管像について
- 26. 咬合用カセッテを用いた歯軸撮影法について(第 42 回九州歯科学会総会講演抄録)
- 26-1210 咬合用カセッテを用いた歯軸撮影法について
- 高位咬合床(HV splint)による顎関節症の治療機序に関する実験的研究 : I. HV splintの顎関節に及ぼす影響について
- パナグラフによる顎口腔領域の X 線検査について
- 咬合用カセッテを用いた歯軸方向撮影法の基礎的研究
- 鼻腔内逆生歯の 1 例
- サブトラクション法の顎関節 X 線診断への応用 : 基礎的研究
- 下顎骨の放射線障害に関する実験的研究 : 特に抜歯の影響について
- Regional odontodysplasia の 1 例
- 咬合用カセッテを用いた歯軸方向撮影法の臨床的研究
- 上顎洞底部における外骨症のX線学的検討
- サブトラクション法の唾液腺造影診断への応用