微小電流刺激による歯槽骨形成の実験的研究 : 人工的骨欠損部への Tricalcium phosphate の応用

概要

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In three adult mongrel dogs, a pair of surgical bony defects was made bilaterally in the mandible. These defects were implanted with tricalcium phosphate (TCP) in order to ensure the space which would be filled with new bone as "the field of osteogenesis". The electrodes were set in the bottom wall of the bony defect on each side of the mandible. A constant direct current of 10 μA was applied to the right electrodes, and was not applied to the left ones for control. Osteogenesis in alveolar bony defect was examined. The results were as follows : 1. Whether TCP was retained and then resorbed in the bony defect and ensured "the field of osteogenesis" could not be determined. But TCP didn't inhibit the process of osteogenesis. 2. The cross-sectional area of callus was significantly larger at the electrically stimulated site than at the control site. Especially, arround the electrodes, a significant callus formation could be seen. The nature and extent of effect of TCP application on electrically stimulated osteogenesis could not be determined. 3. The electrical stimulation appeared to promote the resorption of TCP.
九州歯科学会の論文
1987-10-25