Comparision of clinical effects of two kinds of moved maxilary bite plate appliance in the interceptive orthodontics in the treatment of deciduous anterior teeth overbite / 重庆医学

ABSTRACT

Objective To compare difference of clinical effect of reformed interocclusal lip arch appliance and conventional moved maxillary bite plate appliance in the interceptive orthodontics in the treatment of deciduous anterior crossbite .To search an appro-priate interceptive orthodontics treatment of deciduous anterior crossbite .Methods 50 cases of deciduous anterior crossbite were randomly divided into 2 groups(25 cases in each group) .The improvement group underwent a modified appliance therapy ,and the control group were treated with conventional bite appliance ,then we compared the clinical efficacy of the two groups .Results All the cases with the deciduous anterior crossbite were cured .After treatment ,the maxillary anterior teeth and soft tissue profile of all the patients were improved .In the improvement group the changes of the mandible ,the mandibular anterior teeth ,and the concave profile improving have more significant efficiency than those in the control group .Conclusion Both kinds of appliance could cure the deciduous anterior crossbite .The reformed interocclusal lip arch appliance has both the mechanical and functional effects and be-fits in those overbite cases ,it can be an effective interceptive treatment of children with anterior crossbite .The modified appliance group can get more harmonized profile .