成人骨型工类错胎不同垂直骨面型的颏部软组织厚度

目的探讨颏部软组织厚度和垂直骨面型的关系，以期为正畸、正颌病人的治疗提供依据。方法选取120例青岛地区汉族成人骨型I类错耠病人作为研究对象，根据下颌平面角分为低角组、均低角组、均高角组和高角组，每组30例（男、女各15例）。测量并比较各组颏前点（Pog）、颏顶点（Gn）、颏下点（Me）的软组织厚度。结果成人骨型I类错袷不同垂直骨面型间Gn-Gn’、Me—Me’测量值比较差异均有显著性（F=8．647、4．044，P〈0．05），Pog—Pog，测量值差异无显著性（P〉0．05）。除高角组外，其他组Gn—Gn’、Me—Me’、Pog—Pog’测量值男性均大于女性（t=2．133～3．727，P〈o．05）。结论成人骨型I类错猞病人的颏部软组织厚度与垂直骨面型存在相关关系，除高角组外，男性病人的颏部软组织厚度大于女性。

COMPARISON OF THE THICKNESS OF SOFT TISSUE AT THE CHIN IN ADULT PATIENTS OF SKELETAL CLASS I WITH VA- RIOUS MANDIBULAR DIVERGENCE PATTERNS

Objective To explore the relationship between the thickness of soft tissue at the chin （STC） and mandibular divergence, and provide basis for orthodontic and orthognathic treatments. Methods This study consisted of 120 adult patients of Han people-in Qingdao area-with skeletal class I malocclusion, who were equally divided into four groups-the group was evenly composed of men and women based on mandibular plane angle. The thickness of STC was measured at pogonion （Pog）, gnathion （Gn）, and menton （Me）. Results The differences between the values of STC thickness of Gn and Me were statistically significant （F=8.647,4.044 ;P〈0.05）, and that of Pog were not （P〉0.05）. The thickness of Pog, Gn, and Me was greater in men in each group, except that in the high-angle group （t=2.133-3.727,P〈O.05）. Conclusion There is a correlation between mandibular plane angle and the thickness of soft tissue at the chin. The STC is thinner in women than in men except for the high-angle group.