A DİFFERENT APPROACH IN ANGLE CLASS II DİVİSİON 1 TREATMENT: CASE REPORT

Class II division 1 malocclusions are frequently seen in orthodontic practice. Class II anomalies are characterized with a protruded maxilla, retruded mandible or combination of these two situations. Individiual variations and the correct diagnose of these differences are indispensable for the correction of Class II malocclusion. In this case report; orthodontic treatment of an adolescent patient with skeletal class II anomaly is described. Treatment objectives were to obtain Angle Class I molar and canine relationship, reduce the amount of overjet and overbite and to improve patient’s profile. Treatment plan was decided to be twophased. In the first phase slow maxillary expansion was applied with a removable device. To stimulate the saggital growth of mandible at the same time with maxillary expansion, the device was also designed with bite registration, which was Angle Class I molar and canine relationship. In the second phase, after achieveing enough amount of expansion, the bite registration was removed. New bite registration was made on the anterior part of the device to correct the overbite. At the same time servical headgear was applied to the patient to control the growth of the maxilla. After correcting the maxillomandibular relationship, fixed orthodontic treatment was applied. Active treatment time was 27 months , including 15 months of orthopedic treatment following 12 months of fixed orthodontic treatment. Angle Class I molar relation was obtained, and the patient’s profile improved. Bite registration device can be a good alternative to activators for skeletal Class II anomaly treatment.