摘要
目的探讨安氏Ⅱ类2分类错患者下切牙的特点,为矫治安氏Ⅱ类2分类错提供参考。方法对126例年龄11～18岁正畸治疗前的安氏Ⅱ类2分类错牙模型进行测量,分析安氏Ⅱ类2分类错患者下切牙牙量和缺失情况。结果安氏Ⅱ类2分类错患者10.32%下切牙缺失,下颌中切牙牙冠近远中宽度平均为5.21mm,下颌侧切牙牙冠近远中宽度平均为5.76mm,与文献正常值比较显示下切牙偏小,经统计学分析差异有统计学意义(P<0.01)。结论安氏Ⅱ类2分类错患者下切牙牙冠的近远中径较正常人小,且多发下切牙缺失。
Objective To study the relationship between Angle class Ⅱ division 2 malocclusion and congenital lower incisor anomalies. Methods 126 untreated patients （11-18 years old） with Angle class Ⅱ division 2 were collected, and these modles were measured and the data of congenital mandibular incisor anomaliesn were analysed. Results 10.32% of the patients with missing lower incisor were found. The width of lower eentral incisor was 5.21 ram, and that of lower lateral incisor was 5.76 ram. The result indicates that lower incisors of the patients with Angle class Ⅱdivision 2 are significantly smaller than those reported （P〈 0.01）. Conclusion Lower incisors of patients with Angle class Ⅱdivision 2 were smaller than normal, and missing lower incisor was a familiar sight.
出处
《广东牙病防治》
2007年第3期110-111,共2页
Journal of Dental Prevention and Treatment
