A case report of bilateral XXXX in early mixed dentition using bonded constriction quad-helix appliance.

@entity1 @entity11104 @entity3232
@entity11104 is a comparatively rare type of @entity3232 found in primary and mixed dentition. It not only adversely affects chewing and muscle functions, but also impairs normal growth and development of the mandible. This report describes the therapeutic results of a @entity1 with bilateral @entity11104 in early mixed dentition after using a bonded constriction quad-helix appliance. The @entity1 , a @entity1 aged 9 years and 2 months, first visited our hospital after occlusal abnormality in the molar region was detected at a local dental clinic. Case analysis resulted in a diagnosis of bilateral @entity11104 with slight mandibular retrognathism. Treatment objectives were to reduce the arch width of the maxillary dentition and expand the mandibular arch in order to establish and stabilize molar occlusion and to achieve a Class I molar relation and appropriate overbite and overjet. Treatment comprised covering the occlusal surface of the maxillary molars with resin and attaching a bonded constriction quad-helix appliance joined with a 0.040-inch quad-helix wire. A bi-helix appliance was also fixed to the mandibular dentition. @entity11104 visibly improved after 5 months. Cervical headgear was then fitted and the @entity1 observed until eruption of the permanent dentition was complete. Class I molar relation was achieved after 2 years and 6 months, although spacing remained in the maxillary and mandibular dentitions. Treatment of bilateral @entity11104 in mixed dentition by means of a bonded constriction quad-helix appliance attached to the maxillary dentition enabled effective bite opening and reduction in the width of maxillary arch independent of the @entity1 's cooperation, providing good therapeutic outcome in a short time period.
