Pre-Prosthetic Intrusion of Maxillary Molars by Clear Aligners: A Case Report

This case report describes a simple technique using clear aligners to intrude overerupted molars. A 27-year-old woman presented with missing mandibular left first and second molars, with the left third molar present in the arch. However, the prosthetic rehabilitation was limited by the opposing overerupted molars. Clear aligner therapy (CAT) was used to regain the necessary interocclusal space. After initial molar distalization, subsequent 2.14 and 1.3 mm of intrusion for the maxillary left first and second molars, respectively, was designed to solve the door-wedge effect dilemma. Without miniscrews, considerable intrusion (1.9 and 0.9 mm for maxillary left first and second molars, respectively) was achieved within 6 months with minimal discomfort. Radiologic and clinical examinations revealed a favorable occlusal relationship and improved alignment for both arches. Outcomes in the case revealed that intruding overerupted molars via CAT may be an effective approach.