3种黏结材料对中、重度氟斑牙正畸托槽脱落率的影响

目的观察氟斑牙患者应用不同黏结剂对托槽脱落率的影响,探讨有效的正畸治疗措施。方法 18例氟斑牙患者随机分为3组,A组采用京津釉质黏结剂,B组采用光固化复合树脂黏结剂,C组将氟斑牙表面釉质少量磨除直接贴面黏结,观察各组治疗1个月后的托槽脱落率及不同临床因素的作用。结果 C组氟斑牙患者将氟斑牙表面釉质少量磨除直接贴面黏结的托槽率最低,明显低于A组和B组托槽脱落率,且B组的托槽脱落率明显低于A组,各组间比较,差异均有统计学意义(P<0.05)。各组托槽脱落率男性明显高于女性,差异均有统计学意义(P<0.05或0.01)。儿童和青少年的托槽脱落率明显高于成人,差异均有统计学意义(P<0.05或0.01)。但各组不同牙位间托槽脱落率比较,差异无统计学意义(P>0.05)。结论托槽的黏结是口腔正畸治疗中的重要步骤,将氟斑牙表面釉质少量磨除直接贴面黏结的托槽率效果好,但具有一定的适应证,临床医生应根据患者的不同情况选择合适的黏结剂,以降低托槽的脱落率。

Three kinds of bonding materials for moderate to severe orthodontic dental fluorosis rate of loss

Objective To observe the patients of dental fluorosis on different binder shedding rate brackets,and to explore the effect of orthodontic treatment. Methods 18 cases of dental fluorosis were randomly divided into three groups,A group using the Beijing-Tianjin enamel bonding agent,B group using light-cured composite resin binder,C group use the surface of the tooth enamel fluorosis,a small amount of veneer mill in addition to direct bond,observed in each group after 1 month of treatment rate and bracket off the role of different clinical factors were analyzed. Results C group dental fluorosis dental fluorosis patients will wear a small amount of surface enamel in addition to the direct bonding of brackets veneer lowest rate was significantly lower than in group A and B brackets off rate,and group B was significantly lower bracket off in Group A,the differences between groups were statistically significant(P < 0.05). One bracket of each group of men was significantly higher than female group,the differences were statistically significant(P < 0.05 or 0.01).Children and adolescents was significantly higher than the bracket off the adult,the differences were statistically significant (P <0.05 or 0.01). However,different sets of teeth between the brackets off rate,the difference was not statistically significant(P >0.05). Conclusion The bond bracket orthodontic treatment is an important step,the surface of the tooth enamel fluorosis,a small amount of veneer mill in addition to the direct bonding of brackets rate is good,but has some indications,clinicians should be based on different patient to choose the appropriate binder to reduce the shedding rate bracket.