正畸治疗对儿童龋病活跃性影响

Study on the change of caries activity in children under fixed orthodontic treatment

目的 :通过对直丝弓固定矫治的 17例恒牙列儿童在正畸治疗前及正畸治疗过程中龋病活跃性的检测 ,了解固定矫治对儿童龋病活跃性的影响。方法 :采用菌斑内细菌计数、菌斑耐酸性及产酸性实验 ,利用SPSS统计软件进行方差分析 ,并分别将治疗过程中 1、3和 6个月的结果与治疗前进行比较。结果 :治疗过程中 1、3和 6个月 ,正畸儿童口腔内总细菌数、链球菌数量、变形链球菌数 ,菌斑的产酸及耐酸能力均有提高。结论 :戴用固定矫治器会引起正畸儿童龋病活跃性增加 。

AIM:To evaluate the caries activity of children before and during fixed orthodontic treatment.METHODS:Seventeen patients scheduled for treatment with fixed orthodontic appliances were included in this experiment. The colony form unit,the acid enduric ability and pH value of dental plaque were used to analysize the caries activity before and during the treatment process.RESULTS:The result had shown that the number of total bacteria, streptococcus and streptococcus mutans were much higher at the first? third and sixth month of treatment compared with pre-treatment.The acid enduric ability and pH value were similar to this.CONCLUSION:The caries activity was significantly elevated during active treatment.The above three methods are valuable to determine the caries risk level.