Alternative approach using miniscrew-anchored sliding jig to correct maxillary midline deviation in a patient with unilateral missing premolar

This case report describes the use of a miniscrew-anchored sliding jig (SJ) to distalize molars in a patient with maxillary midline deviation. A 41-year-old female presented with a chief complaint of maxillary midline deviation toward the left caused by prior orthodontic treatment involving unilateral extraction of a maxillary left premolar. Clinical examination revealed facial symmetry and a straight profile. The maxillary midline was deviated 2.5 mm to the left. The patient was treated with molar distalization using miniscrew-anchored SJs. Midline correction and alignment were obtained with maxillary unilateral distalization and mandibular full-arch distalization. The total active treatment period was 32 months. Appropriate occlusion and centered midlines were maintained after 29 months of retention. Our results suggest that the treatment method described herein is effective to distalize the unilateral posterior segment in either arch.