乳歯列期口腔組織の放射線障害に関する実験的研究

スポンサーリンク

概要

• 論文の詳細を見る

• In order to study the effect of radiation on the jaw bones in growing stage, the mandibles of young dogs were irradiated with a total dose of 3, 000R of 200 kVp X-ray and macroscopic and radiological investigations were made of the skin, mucosa, gingiva, teeth, etc. The results were as follows : 1. Injuries to the third deciduous molar region appeared shortly after irradiation but regeneration began after irradiation. From the 8th to 15th day was the period in which vital reaction was the highest. 2. In the gingiva, irradiation injuries such as redness, ulceration, and easy bleeding were observed. However, findings beyond these were not observed. Ulceration was restored two months after irradiation but atrophy of the gingiva continued for eight months. 3. Prolonged retention of deciduous teeth was observed and eruption of the successional premolar teeth was not observed. The successional teeth were incomplete in crown formation but showed hypercalcification. The roots however were not formed. 4. Early radiographic findings of injuries to the alveolar bone were bone resorption and disorders in the bone trabecula (e). Spotty bone resorption was the finding thereafter. With the beginning of osteosclerosis, however, spotty bone resorption gradually decreased and indications for recovery were observed. 5. The macroscopic findings on roentgenograms and the findings on their microphotograms were generally in agreement. The findings on the microphotograms of the alveolar bone in the latter observation period showed findings of osteosclerosis which were not detected by macroscopic observations of the roentgenograms. In other words, findings in the latter period on the jaw bones in growing stage after irradiation were considered to be mainly restorative reactions to irradiation hazards. On the basis of the foregoings, irradiation injuries caused by irradiation with a total dose of 3, 000R of 200kVp X-ray to the jaw bones in growing stage vary in the extent with the tissue subjected to irradiation. However, the injuries of the permanent tooth germs were considered to be very serious.

• 九州歯科学会の論文
• 1985-08-25

著者

• 池田 政信

  九州歯科大学小児歯科学講座

関連論文

• 乳歯列期口腔組織の放射線障害に関する実験的研究 : 主論文の要旨
• 乳歯列期口腔組織の放射線障害に関する実験的研究
• 3. 乳歯列期口腔組織の放射線障害に関する実験的研究(第 2 報)(第 44 回九州歯科学会総会講演抄録)
• P∿3 乳歯列期口腔組織の放射線障害に関する実験的研究(第 2 報)

スポンサーリンク