摘要
目的研究骨性Ⅱ类错畸形患者颌位关系的特点,探讨板治疗对此类患者双侧髁突功能位置的改变及对错畸形诊断的影响。方法选择板治疗的28例骨性Ⅱ类错畸形患者,使用髁突位置测量仪测量患者治疗前中后的正中关系(centric relation,CR)位与牙尖交错位(intercuspal position,ICP)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。结果 7例患者板治疗前同时满足在X轴、Y轴差异小于2mm、在Z轴差异小于0.5mm。板治疗前后骨性Ⅱ类患者CR与ICP位的双侧髁突功能位置变化的对称性改变在垂直方向上有统计学差异(P<0.05)。板治疗后有2例患者骨性诊断改变,6例患者安氏诊断改变。结论 板治疗可以使骨性Ⅱ类错畸形患者颌位关系趋于协调,为固定正畸治疗提供指导。
Objective To evaluate the effect of splint therapy on the condylar functional position of the skeletal Class Ⅱ malocclusion patients.Methods Twenty-eight patients with skeletal Class Ⅱ malocclusion were treated with occlusion splint.The condylar position in centric relation （CR） and intercuspal position （ICP） was measured before and after the treatment.After the splint treatment,the diagnosis of malocclusion was reevaluated and the change of the symmetry of the bilateral condylar position compared.Results Seven patients had no significant displacement in any of the spatial axes.（≤2mm in the sagittal and vertical planes and ≤0.5 mm in the transverse plane）.There was a significant change in symmetry of the bilateral condylar position in vertical direction before and after splint treatment （P ＜ 0.05）.After the treatment,the classification of skeletal malocclusion changed in two patients,and Angle＇s classification changed in six patients.Conclusion The splint treatment could improve the symmetry and harmony of the jaw position and be helpful in orthodontic treatment.
出处
《北京口腔医学》
CAS
2013年第5期281-284,共4页
Beijing Journal of Stomatology
