圧迫側歯根膜の血流変化について

概要

論文の詳細を見る
During the tooth movement, an optimal compressive force (orthodontic force) must be applied to the periodontal ligament. In order to achieve an optimal force, it is important to understand the changes of blood flow and the vascular networks on the pressure side of the periodontal ligament. However, there are few published reports about the long-term daily changes of the blood flow in the vascular networks of the periodontal ligament. We studied the daily changes of the blood flow in the pressure side of the periodontal ligament of the dog mandibular canine using a microcirculation analyzer, which enables to discriminate between blood flow of arteries and veins based on a cross-correlation coefficient between laser speckle and pulse signals. We measured the blood flow in the pressure side of its periodontal ligament through a thin cavity wall. The following results were obtained ; 1. The microcirculation analyzer and the cross-correlation coefficient that we used in this study could measure the changes of arterial and venous blood flow on the pressure side of the periodontal ligament. 2. The overall blood flow after the force application decreased immediately. 3. The blood flow after the force application increased on day 1 especially in the arteries. 4. The arterial and venous blood flow recovered after 3, 7, and 14 days of the force application to the same levels as under non-pressurized conditions.
岩手医科大学歯学会の論文
2004-04-26