低角患者颞下颌关节窝及下颌骨形态位置特点的锥形束CT研究  

Morphological and positional characteristics of the glenoid fossa and mandible in patients with hypodivergent pattern

作　　者：吕文馨 刘乙澍 LYU Wenxin;LIU Yishu(Department of Stomatology,Beijing Chao-Yang Hospital,Capital Medical University,Beijing 100020,China)

机构地区：[1]首都医科大学附属北京朝阳医院口腔科,北京100020

出　　处：《山东大学学报（医学版）》2023年第7期101-108,共8页Journal of Shandong University:Health Sciences

摘　　要：目的 利用锥形束CT(CBCT)研究低角患者颞下颌关节窝及下颌骨形态位置的特点。方法 回顾性分析患者颅面部大视野CBCT共51例,按下颌平面角(∠MP-FH)以及下颌-前颅底平面角(∠MP-SN)大小分为低角组和均角组,其中低角组纳入病例27例,均角组纳入病例24例,测量均角及低角患者双侧反映下颌骨形态位置的各项测量指标共17项。结果 低角组与均角组颞下颌关节窝的形态大小及位置差异无统计学意义(P>0.05),差异主要表现在下颌骨的形态大小,低角组髁突后倾角明显小于均角组(P<0.01),下颌体部长度明显大于均角组(P<0.01),低角患者的下颌骨发生逆时针旋转。结论 低角患者颞下颌关节窝发育无明显异常,在对低角患者进行正畸治疗的过程中需要考虑的是患者髁突方向及下颌骨的形态特点。Objective To analyze the morphological and positional characteristics of the glenoid fossa and mandible in patients with hypodivergent pattern by cone beam computed tomography(CBCT).Methods The imaging data of 51 patients were retrospectively analyzed.The patients were divided into hypodivergent group(n=27) and normal group(n=24) according to ∠MP-FH and ∠MP-SN.A total of 17 measurements were used to analyze the mandibular morphology and position.Results There were no significant differences in the shape and size of the glenoid fossa between the two groups(P>0.05).The difference was mainly manifested in the shape and size of the mandible.The posterior inclination of the condyle in the hypodivergent group was significantly smaller than that in the normal group(P<0.01),while the length of the mandibular body was significantly greater(P<0.01).The mandible rotated counterclockwise in patients with hypodivergent pattern.Conclusion The temporomandibular fossa of patients with hypodivergent pattern has no obvious abnormality.The inclination of condyle and the morphology of the mandible should be considered during the orthodontic treatment.

关 键 词：低角患者 颞下颌关节 下颌骨形态位置 锥形束CT 

分 类 号：R783.5[医药卫生—口腔医学]