Severe Class II division 1 malocclusion treated by orthodontic miniplate with tube

A miniplate with tube (C-tube) was placed in the interdental spaces between both left and right upper second premolars and first molars in a 15-year-8 month-old male patient with a Class II malocclusion who with severe anterior protrusion and lower anterior crowding. The treatment plan consisted of extracting both upper first premolars, en masse retraction of the upper six anterior teeth and lower anterior decrowding. C-tubes were used as substitutes for posterior dental anchorage during upper anterior retraction. The particular design of the C-tubes made it possible to retract fully with minimal gingival irritation. The correct overbite and overjet were obtained by intruding and retracting the maxillary incisors to their proper positions and this correction remained stable for at least 27 months after debonding. Also, facial balance was improved. The active treatment period was 14 months. The application of this new appliance, consideration of case selection, and sequence of treatment are presented.