Matsuda Y
Nihon Kyosei Shika Gakkai Zasshi. 1989 Oct;48(5):506-20.
For the purpose of clarifying the effects of two stage corticotomy on maxillary protraction, experimental studies by using of 5 male Japanese monkeys (Macaca fuscata) were performed. Results from cast analysis, roentgenographic cephalometry and histological examinations were as follows. I. In experimental groups that received two stage corticotomy with maxillary protraction, apical base of maxillary bone protruded markedly. II. In control groups that maxillary protraction was applied without corticotomy, sutured area around maxilla seemed to be influenced by orthopedic force. However, hardly any influence from orthopedic force was seen in experimental groups. III. In both groups individual teeth of upper dental arch hardly moved. IV. After two stage corticotomy, no circulatory disturbance in maxillary bone except for reactive inflammation of pulp in anterior teeth and vacuolar degeneration in anterior teeth and posterior teeth was seen, and periodontal tissue remained almost unaffected. This suggested that corticotomy should be performed carefully, especially in anterior apical base of maxillary bone.
为了阐明两阶段截骨术对上颌前牵引的影响，我们使用5只雄性日本猕猴（食蟹猴）进行了实验研究。模型分析、X线头影测量和组织学检查结果如下：I. 在接受两阶段截骨术并进行上颌前牵引的实验组中，上颌骨根尖基明显突出。II. 在未进行截骨术仅施加上颌前牵引的对照组中，上颌周围的缝合区域似乎受到矫形力的影响。然而，在实验组中几乎未见矫形力的影响。III. 两组上牙弓的个别牙齿几乎未移动。IV. 两阶段截骨术后，除前牙牙髓反应性炎症以及前牙和后牙的空泡变性外，上颌骨未见循环障碍，牙周组织几乎未受影响。这表明截骨术应谨慎进行，尤其是在上颌骨根尖基前部。
