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本研究用新型下颌运动轨迹描记仪ＭＴ１６０２，调查测量了７０名具有正常胎并有前导的受试者在下颌前伸运动时髁道斜度与切道斜度的关系，并分析了影响二者关系的有关因素。结果表明，髁道斜度与切道斜度有一定的相关性（ｒ＝０．４９，Ｐ＜０．０１），但经聚类分析结果显示，髁道斜度与面形角关系更为密切，而切道斜度与前牙排列情况关系更为密切。
In this study, a new type of mandibular movement track record instrument MT1602 was used to investigate the relationship between the gradient of the condylar floor and the slope of the incision during the mandibular forward extensorial exercise in 70 subjects with normal fetuses and leads. Relevant factors of the relationship. The results showed that the gradient of the condylar floor was correlated with the slope of the incision (r = 0.49, P <0.01). However, the cluster analysis showed that the relationship between the gradient of the condylar floor and the angle of the face was more Close, while the incline slope and the arrangement of the anterior teeth closer relationship.