A comparitive evaluation of changes in marginal alveolar bone in anterior maxilla caused by maxillary incisors intrusion using miniscrews and utility arch: A 3-dimensional study

Abstract

Objective: This study was performed to investigate the changes in alveolar bone after maxillary incisor intrusion and to determine the related factors in deep-bite patients. Material and Methods: 20 maxillary central incisors of 20 patients were evaluated. The maxillary incisors in Group I (20 patients; mean age, 22±1.32 years) were intruded with a Utility-arch, while those in Group II (10 patients; mean age, 20±2.71 years) were intruded with miniscrews. Changes in the alveolar envelope were assessed using pre-intrusion and post-intrusion CBCT. Labial, palatal, and total bone thicknesses were evaluated at the crestal (3 mm) and mid-root (6 mm) levels. BACH, PACH, and BBH was evaluated. Paired t test was performed for quantitative variables. Results: Upper incisor inclination and intrusion changes were significantly greater in Group II than in Group I. Conclusions: Change in the labial inclination and the amount of intrusion should be considered during upper incisor intrusion, as these factors increase the risk of alveolar bone loss.