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目的利用锥形束CT(CBCT)测量成人骨性Ⅱ1类错女性病人髁突相关指标,比较其在不同垂直骨面型病人中的差异,为临床诊治提供参考。方法从青岛市口腔医院影像科CBCT资料库中筛选成人女性骨性Ⅱ1类错病人,分为高角组、均角组和低角组各20例。将样本的CBCT影像以DICOM格式输入软件Mimics10.01中进行重建,测量髁突体积、表面积、形态指数、髁突内外径与前后径。结果 3组左右侧髁突各指标比较差异均无统计学意义(P>0.05)。低角组各指标与均角组比较,低角组除髁突形态指数外其余指标与高角组比较,高角组髁突内外径、前后径和形态指数与均角组比较,差异均有显著性(F=3.365~27.035,P<0.05)。结论不同垂直骨面型成人骨性Ⅱ1类错女性病人髁突形态存在一定差异。
Objective To measure the condyle related indexes of adult patients with skeletal class Ⅱ 1 malocclusion by cone beam computed tomography (CBCT), and to compare their differences in different vertical bone type patients, so as to provide reference for clinical diagnosis and treatment. Methods The adult female patients with skeletal Class Ⅱ1 malocclusion were screened from CBCT database of imaging department of Qingdao Stomatological Hospital and divided into high angle group, average angle group and low angle group in 20 cases. The CBCT images of the samples were input to the software Mimics10.01 in the DICOM format for reconstruction, and the condyle volume, surface area, morphological index, internal and external condylar diameter and anteroposterior diameter were measured. Results There was no significant difference in each index between the left and right condyles (P> 0.05). Compared with the high-angle group, the indexes of low-angle group and the average angle group were lower than those of the high-angle group except for the condyle shape index in the low-angle group (F = 3.365 ~ 27.035, P <0.05). Conclusion There are some differences in condyle morphology among female patients with skeletal type Ⅱ malocclusion.