戴固定矫治器取印模方法改进的研究

Study on modified method of making oral impression while patients wearing fixed appliances

目的 :改进戴着固定矫治器取印模的方法 ,提高一次取模成功率 ,减少临床操作时间、节省印模材料。方法 :对同一组患者分别采用两种方法 (常规方法和改进方法 )取模 ,然后对两组的成功率进行统计学处理。结果 :改进方法优于常规方法(P <0 .0 5 ,χ2 检验 )。结论 :取印模方法改进后 ,提高了一次取模成功率 ,值得推广。

Objective:To modify the method of making oral impression and improve the successful rate.Methods:Rubber band was used to fill in the brackets before making oral impression.Two kinds of ways,the modified and the traditional,were used for each patient.Then the successful rate was compared between two groups.Results:There is statistically significant difference in the successful rate between the traditional group and the modified group ( P <0.05, χ 2-test).Conclusion:The modified method is superior to the traditional method.lt is necessary to use it widely.