板治疗对骨性Ⅰ类错畸形患者髁突功能位置和诊断的影响

摘要

目的：研究板治疗对骨性Ⅰ类错畸形患者双侧髁突功能位置和诊断的影响。方法板治疗34例骨性Ⅰ类错畸形患者。使用髁突位置测量仪( measures of condyle displacement, MCD)测量患者治疗前、中、后的正中关系( centric relation,CR)位与正中( centric occlusion, CO)位的差异,板治疗结束时重新评估错畸形诊断,比较板治疗前后功能位置差异和左右双侧对称性的改变。使用配对检验对数据统计分析。结果板治疗后患者CR与CO位的双侧髁突功能位置变化的对称性比治疗前有改善。板治疗后,患者中有2人(7．1%)骨性诊断改变,有6人(21．4%)的安氏诊断改变。结论板治疗可以使骨性Ⅰ类错畸形患者髁突CO-CR位置差异趋于协调,对称性得到改善。必要的板治疗可以改善错畸形患者诊断的正确率。%Objective To investigate the effect of splint treatment of the skeletal ClassⅠmalocclusion patients on condylar functional position and symmetry changes and diagnosis. Methods Thirty-four patients with skeletal Class I malocclusion were treated by occlusion splint. The MCD ( measures of the condyle displacement ) was used to compare condylar position between centric relation (CR) and centric occlusion (CO). The frequency, direction and magnitude of CO-CR difference were determined, and the changes of the symmetry of the bilateral condylar before and after the treatment evaluated. The patients were re-diagnosed after the treatment. Results After the splint treatment, the symmetry of the bilateral condylar was improved and 14. 7%(5/34) of the patients had different skeletal classification. 17. 6%(6/34) of the patients had different Angle’s classification. Conclusion The splint treatment improved the symmetry of the bilateral condylar in skeletal Class I malocclusion patients and the accuracy of the diagnosis.