活动性矫治器早期治疗牙齿反的临床研究

Experimental study on effects of active appliance in treatment for early teeth crossbite

目的探讨活动性矫治器治疗早期牙齿反的临床疗效,为矫治前牙反提供有效办法。方法对60例牙齿反患儿采用佩戴活动性矫治器的方法进行早期治疗,分别比较这60例患儿治疗前后X线投影测量结果,判断治疗效果。结果60例牙齿反患儿中,矫治时间为2-9个月,其中10例矫治时间2-3个月,37例矫治时间3-7个月,13例矫治时间7-9个月,平均矫治时间(5.8±2.7)个月,所有研究患儿均按照医师要求完成治疗周期;对60例患儿的SNA角、颌凸角、SNB角、ANB角、U1-SN、SN-UIN、CV值治疗前后X线测量显示治疗后较治疗前均显著改善且差异均具有显著的统计学意义(P<0.05);60例患儿在治疗后结束后1年进行复查,发现有4例儿童复发,均与年龄偏大、存在前牙反的家族史或不良的口腔习惯未破除等原因有密切关系,复发率为6.67%。结论活动性矫治器治疗早期牙齿反具有明显的正畸效果,但同时应该注意对儿童不良习惯的纠正以保持治疗效果。

Objective To investigate the activity of the appliance in the treatment of early dentalcrossbite clinical curative ef-fect,for the treatment of deciduous teethcrossbite with effective measures. Methods On 60 cases of dental crossbite were treated by method of wearing activeappliance of early treatment,60 cases were compared before and after treatment the X-ray projection measurement results,determine the treatment effect. Results 60 cases of dental crossbite patients,the treatment time was 2-9 months,including 10 cases of the treatment time of 2-3 months,37cases of the treatment time of 3-7 months,13 cases of the treat-ment time of 7-9 months,the average treatment time （5.8±2.7） months,all the patients were according to the doctor asked to com-plete treatment period;in 60 cases of SNA angle,angle of convexity,SNB angle,ANB angle,U1-SN,SN-UIN,CV values before and after the treatment of X-raymeasurements show that after treatment than before treatment were significantly improved and the differences were statistically significant（P〈0.05）;in 60 patients after treatment 1 years review,found 4 cases ofchildren with recur-rent,bad habits as there is a close relationship between the break,the recurrence rate was 6.67%. Conclusion Active appliance in the treatment of early dental crossbite orthodonticeffect is obvious,but at the same time,attention should be paid tochildrenˊs bad habits to maintain therapeutic effect correction.