Objective
We report the use of a temporary anchorage device (TAD) to treat a case of maxillary protrusion with significant labial inclination of the anterior maxillary teeth.
Case
The patient was a woman of age 15 years and 3 months, with a chief complaint of protrusion of her upper teeth. Intraoral findings: The molar relationship was Angle class II, with overjet of 14.5 mm and overbite of 4.5 mm. Facial findings: The facial profile was convex, and labial protrusion was confirmed. Diagnosis: Maxillary protrusion accompanied with crowded teeth.
Discussion and Summary
The maxillary second premolar was removed, and a TAD was implanted between the maxillary second premolar and the first molar in order to create movement of the maxillary anterior teeth in the palatal direction. As a result, overjet was improved from 14.5 mm to 3.0 mm without root resorption. This was believed to be because of the application of slight force by the TAD. Currently, it has been 2 years since retaining, and because of good lip support in the upper and lower jaws, the condition remains favorable. In a case of maxillary protrusion and large overjet, treatment with TAD was successful.