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作者研究了130个新鲜的离体下颌骨标本,20—70岁尸体40具,胎儿8具。对16具成人尸体进行了实验性下齿槽动脉结扎。经颈外动脉将造影剂注入上颌动脉或下齿槽动脉,进行X 线摄影,脱钙,制做标本等。研究表明:在成人下齿槽动脉基本上是营养下颌骨的唯一骨内血管。在76个标本中有分支在下颌管中离开下齿槽动脉分布到升枝前缘,并返回分布于第三磨牙牙根、牙周和骨,还分出牙动脉和牙间动脉,其直径0.2—0.3毫米。牙动脉进入牙根,牙间动脉进入牙槽中隔。牙间动脉沿途分出小枝到骨、骨膜和牙龈。随年龄增长,由于牙缺失
The authors studied 130 fresh mandibular specimens, 40 aged 20-70, and 8 fetuses. Sixteen adult cadavers underwent experimental inferior alveolar artery ligation. The external carotid artery contrast agent into the maxillary artery or inferior alveolar artery, X-ray photography, decalcification, making specimens and so on. Studies have shown that the alveolar artery in adults is essentially the only osseous vessel that nourishes the mandible. Branches in 76 specimens were removed from the inferior alveolar artery in the mandibular canal to the leading edge of the ascending branch and returned to the root, periodontal and bone of the third molars, and also branched between the tooth and the interdental arteries with a diameter of 0.2 -0.3 mm. Dental artery into the root, the interdental artery into the alveolar septum. Branches of the interdental artery divide into twigs, periosteums and gums. With age, due to missing teeth