摘要
目的定量定性分析恒牙列早期安氏Ⅲ类错患者下颌边缘运动轨迹的特征及其与颅面形态的关系。方法选择恒牙列早期安氏Ⅲ类错患者21例作为试验组,20例恒牙列早期个别正常人作对照组,使用K6_I型下颌运动描记仪描记两组研究对象的下颌边缘运动轨迹,同时拍摄X线头侧位片,分析二者的相关性。结果试验组下颌边缘运动范围与对照组无统计学意义。对照组ICP_最大张口线距与前下面高呈正相关,开口度与下颌支高度及后面高呈正相关;试验组ICP_最大张口线距与前下面高及下前牙牙槽高度呈正相关,开口度与下颌体长度及下前牙牙槽高度呈正相关。结论安氏Ⅲ类错患者的下颌边缘运动与颅面形态的关系和个别正常人不同。
Objective To investigate characteristics of the border mandibular movement of the adolescent with Angle Ⅲ malocclusion and to find the correlations between craniofacial morphology and border mandibular movement function. Methods The subjects consisted of 21 adolescent patients with Angle Ⅲ malocclusion in the initial stage of permanent dentition（mean age 12.3 years）. 20 adolescents with individual normal occlusion served as control （mean age 12.8 years）. The border mandibular movement of all cases in the two groups were traced and recorded by K6-1 Evaluation System and standardized lateral eephalograms were taken. Results The results revealed no significant difference in the maximal movement range between two groups, but indicated a positive association between the maximum jaw opening and both the mandible length（Go-Gn） and the L1-MP. The distanco from ICP to maximal opening （D） was positively correlated with facial height and the L1-MP. While to adolescents with individual normal occlusion, the wider the maximal jaw opening was, the bigger the posterior facial height and the cophalometrie values of mandibular remus. The distance D positively correlated with the anterior lower facial height. Conclusion Angle Ⅲ malocclusion had its characteristics in the tracing and had a specific relationship with the eraniofaeial morphology.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
2005年第6期508-511,共4页
West China Journal of Stomatology
关键词
安氏Ⅲ类[牙合]
恒牙列早期
下颌边缘运动
Angle Ⅲ malocclusion
initial stage of permanent dentition
border mandibular movement
