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本研究的目的旨在研究人牙髓中血管节段的三维特点。 在2％利多卡因(含1:80000肾上腺素)1 ml局麻下,拔除因正畸需要的7只健康前磨牙,颊舌向劈开,取出牙髓,分成小块。经固定,除去结缔组织,将分节段血管脱水,浸泡于醋酸异戊酯中,喷涂铂,作扫描电镜检查。 结果显示,按形态学不同将人牙髓血管分为以下6种类型:a 肌性小动脉,除外膜外,其直径为15～40μm,至少有2层紧密的纺锤形的平滑肌细胞(sM)。b 末梢性小动脉,其直径10～20μm,至少有1层紧密的纺锤
The purpose of this study was to study the three-dimensional characteristics of vascular segments in human dental pulp. In 2% lidocaine (containing 1: 80000 epinephrine) 1 ml of local anesthesia, remove the need for orthodontic 7 healthy premolar cleavage, the pulp removed, divided into small pieces. The fixed, remove the connective tissue, the segmental vascular dehydration, soaked in isoamyl acetate, spraying platinum, for scanning electron microscopy. The results showed that the human dental pulp vessels were classified into the following six types according to their morphological characteristics: a muscular arterioles, with a diameter of 15 ~ 40μm, at least two layers of spindle-shaped smooth muscle cells (sM) . b peripheral arterioles, the diameter of 10 ~ 20μm, at least one layer of close spindle