摘要
目的:探讨成人高、低角骨面型浅层咬肌功能形态差异。方法:37名成人高、低角骨面型样本(高角17例、低角20例),应用超声成像技术测量下颌姿势位、最大紧咬位、最大前伸位时浅层咬肌周长、面积、宽度、最大厚度及长度,并对不同功能位置的形态指标及形态变化量进行2组间比较分析。结果:3种功能位置中,低角组浅层咬肌形态的各项测量指标均大于高角组。除个别位置间的宽度有差异外,不同功能位置间咬肌形态变化量2组间均无明显差异。体质量对紧咬位的周长、面积、宽度、平均厚度、最大厚度及最大前伸位的周长、面积有影响(P<0.05)。身高对姿势位到紧咬位的周长、宽度变化量有影响(P<0.01)。体质量对姿势位到紧咬位的周长、面积变化量有影响(P<0.05)。结论:高角骨面型浅层咬肌功能形态测量值小于低角骨面型。
Objective： To study the differences of the superficial masseter muscle morphology characteristics between adult high-angle and low-angle facial skeletal types. Methods： The subjects consisted of 37 yellow race adults, 17 of them with high-angle facial skeletal type and 20 with low-angle. Uhrasound scanning was used to measure the perimeter, area, width, thickness, and length of masseter muscle. All the items were measured under relaxed, maximal clenching and maximal protrusive mandibular position. Results：①In the various mandibular positions, the masseter muscle size of adults with high-angle facial skeletal type was smaller than that of those with low-angle. ②Except for the changes of width from the relaxed to maximal clenching position and from the relaxed to maximal protrusive position（P 〈 0.05 ） , the changes of masseter muscle size measurments from one position to another were not significantly different between the two groups（ P 〉0.05 ）. ③Stature and weight influenced the size of the masseter muscle. Conclusion：The masseter muscle size of adult with high-angle facial skeletal type is smaller than that of those with low-angle.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2005年第6期804-807,共4页
Journal of Practical Stomatology
基金
国家自然科学基金(30171024)
关键词
成人
面型
咬肌
Adult
Facial type
Masseter muscle
