Chen Xiaobo, Chen Ping, Ma Shanwei, Liang Yuanwei, Xu Lin
Department of Orthodontics，Zhuhai Dental Hospital，Zhuhai，519000，China.
Department of Stomatology，Fifth People's Hospital.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi. 2023 Aug;37(8):652-655. doi: 10.13201/j.issn.2096-7993.2023.08.010.
To investigate the relationship between idiopathic condylar resorption （ICR） and arch width disorder. Thirty-two patients with ICR and twenty patients without condylar resorption were enrolled according to the same inclusion criteria. They were divided into experimental group and control group. The experimental group was divided into unilateral ICR group and bilateral ICR group according to the affected side of condylar resorption, and then experimental group was divided into subgroups ICR Ⅰ, ICRⅡand ICR Ⅲ according to the degree of condylar resorption. Patients with no condylar resorption were used as a control group. The width of anterior, middle and posterior segments of dental arch on cone beam computed tomography（CBCT） was measured and the two groups of measured values were statistically analyzed. Compared with the control group, the width of maxillary anterior, middle and posterior segments in ICR group was significantly reduced, and the difference was statistically significant（<0.01）. But the width of mandibular segment was not significantly different from that in control group（>0.05）. There was no significant difference in the width of anterior, middle and posterior dental arch between subgroups（>0.05）. Almost all patients with ICR have malocclusion of maxillary and mandibular arch width, but there is no significant correlation between the malocclusion width and the severity of condylar resorption.
探讨特发性髁突吸收（ICR）与牙弓宽度紊乱之间的关系。按照相同的纳入标准，纳入32例ICR患者和20例无髁突吸收的患者。将他们分为实验组和对照组。实验组根据髁突吸收的患侧分为单侧ICR组和双侧ICR组，然后根据髁突吸收程度将实验组分为ICRⅠ、ICRⅡ和ICRⅢ亚组。将无髁突吸收的患者作为对照组。在锥形束计算机断层扫描（CBCT）上测量牙弓前、中、后段的宽度，并对两组测量值进行统计学分析。与对照组相比，ICR组上颌前、中、后段宽度明显减小，差异有统计学意义（<0.01）。但下颌段宽度与对照组相比差异无统计学意义（>0.05）。各亚组之间牙弓前、中、后段宽度差异无统计学意义（>0.05）。几乎所有ICR患者均存在上颌和下颌牙弓宽度的错牙合，但错牙合宽度与髁突吸收严重程度之间无明显相关性。
