7 外力に対するネコ歯根膜血流動態の変化について (第439回 大阪歯科学会例会)

抄録

I investigated changes in the periodontal ligament (PL) blood flow after application of external forces on the maxillary canine of adult cats. The blood flow was measured by a laser Doppler flowmeter at five points each on the mesial and distal of the root when force was applied in the mesial direction. There were significant changes in the mean blood flow at all measurement points after application of the force. However, there were no significant changes in the blood flow wave forms except in the most cervical region on the mesial of the tooth. This indicates that blood vessels in the most cervical region of the PL on the compression side were subjected to forces exceeding their capacity to adapt.