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目的:通过锥形束CT对脊柱侧弯患者下颌骨三维重建模型进行测量,分析下颌骨对称性,为进一步揭示脊柱侧弯与错牙合畸形的相互关系提供参考依据。方法:对73例脊柱侧弯患者(其中特发性38例,先天性35例)及40例身体姿势无异常志愿者拍摄锥形束CT并经三维重建后,对下颌骨左右侧结构进行测量分析,对比不对称指数。结果:(1)先天性脊柱侧弯患者脊柱畸形及身体姿势失平衡程度较特发性脊柱侧弯患者严重。(2)脊柱侧弯患者下颌骨体长度、下颌升支长度、下颌骨总长度不对称指数均较对照组无明显差异(P>0.05)。(3)脊柱侧弯组中下颌角点成角不对称指数均较对照组高(P<0.05),先天性脊柱侧弯组髁突顶点成角也明显高于对照组(P<0.05)。结论:脊柱侧弯患者下颌骨结构偏斜,提示脊柱形态及身体姿势对下颌骨发育可能存在一定影响。
OBJECTIVE: To measure mandibular three-dimensional reconstruction of patients with scoliosis by cone beam computed tomography (CT) and analyze the mandibular symmetry so as to provide a reference for further revealing the relationship between scoliosis and malocclusion. Methods: Conical beam CT was performed in 73 cases of scoliosis patients (idiopathic 38 cases, congenital 35 cases) and 40 cases of abnormal postural posture. After three-dimensional reconstruction, the left and right mandibular structures were measured Analysis, comparison of asymmetry index. Results: (1) Patients with congenital scoliosis spinal deformity and body posture imbalance in patients with idiopathic scoliosis more serious. (2) There was no significant difference in mandibular body length, mandibular ascending branch length and total mandibular asymmetry index between the two groups (P> 0.05). (3) Angular asymmetry index of mandibular angle in scoliosis group was higher than that in control group (P <0.05). Angle condylar apex of congenital scoliosis group was also significantly higher than that in control group (P <0.05). Conclusion: The skeletal structure of the patients with scoliosis is skewed, suggesting that the spine morphology and body posture may have certain influence on the development of the mandible.