Correction of a Class III malocclusion with over 20 mm of space to close in the maxilla by using miniscrews for extra anchorage.

Unilateral closure of maxillary extraction spaces in patients with Class III malocclusion can be challenging. This case report describes the closure of first premolar and first molar extraction spaces in a patient with a Class III dental relationship. Two miniscrews were used for intraoral skeletal anchorage. The Class III dental relationship was corrected; a positive vertical overbite was achieved; occlusion of the canines, premolars, and molars was improved; and the extraction spaces were closed.