成人单侧后牙反髁突表面积与体积的CBCT分析

The study of CBCT of condylar surface and volume in adult patients with unilateral posterior crossbite

目的探讨应用锥形束CT(CBCT)测量成年单侧后牙反髁突的体积与表面积差异。方法选择在重庆医科大学附属口腔医院就诊的单侧后牙反成年患者25例为实验组,健康成人正常咬合35例为对照组,拍摄颅颌面CBCT影像,应用Mimics10.0进行髁突的重建与体积和表面积的测量,分析。结果成年单侧后牙反患者反侧髁突的体积与表面积明显小于非反侧(P<0.05)。成年单侧后牙反组的不对称性指数也显著高于正常咬合对照组(P<0.05)。结论成年单侧后牙反患者髁突发育不对称,影响颞下颌关节的正常发育,提示单侧后牙反患者应尽早矫治。

Objective To explore the differences of condylar surface and the volume in adult patients with unilateral posterior crossbite by CBCT.Methods 25 adult subjects with unilateral posterior crossbite were selected from patients visiting in chongqing medical university affiliated oral hospital as a study group,35 adult subjects with normal occlusion were selected as control group.Then cranial and maxillofacial CBCT images were taken and the condylars were reconstructed,volumes and surfaces were measured and analyzed by Mimics 10.0 software.Results The volume and surface of crossbite obviously was less than non-crossbite（P0.05）.There was no obvious difference in the control group.Asymmetry index was obviously high（P0.05） in study group than control group.Conclusion Asymmetric condylar development in crossbite can influence their development,patients with unilateral posterior crossbite should be treated as early as possible.