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Orthodontics 8 (2007), No. 1     15. Jan. 2007
Orthodontics 8 (2007), No. 1  (15.01.2007)

Page 19-29

Segmental Distraction Osteo-genesis of the Anterior Mandible for Improving Facial Esthetics. Preliminary Results
Merli, Mauro / Merli, Monica / Triaca, Albino / Esposito, Marco
Aim: To report preliminary results of treatment with gradual repositioning of the anterior mandibular segment using distraction osteo-genesis in patients with anterior tooth crowding and/or an unfavorable anteroposterior relationship between the anterior dentoalveolar area and the skeletal base.
Methods: The following outcome measures were considered: ability of the technique to achieve the desired skeletal jaw position, resolution of the crowding, periodontal condition (recessions and probing pocket depths), temporomandibular joint symptoms, tooth sensitivity, permanent nerve injury, additional complications, and patient satisfaction. Four patients were treated.
Results: All outcome measures indicated that the therapy goal was achieved and the results maintained to date. Periodontal conditions were slightly improved. Two patients were very satisfied; 2 were only partially satisfied with the therapy. In 1 patient the root of the mandibular right first premolar was damaged during the vertical osteotomy procedure and the mandibular right central incisor did not respond to the postoperative sensitivity test. Another patient reported tension at the temporomandibular joint when chewing hard food.
Conclusion: The preliminary results are encouraging. However, larger trials are needed to acquire sufficient knowledge of the efficacy, predictability, and ideal indications for the mandibular osteo-distraction technique.