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KCI등재 학술저널

Miniscrews versus surgical archwires for intermaxillary fixation in adults after orthognathic surgery

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Objective: We compared the skeletal and dental changes that resulted from the use of two methods of intermaxillary fixation (IMF)&#8212;miniscrews and surgical archwire&#8212;in 74 adult patients who had Class III malocclusion and were treated with the same orthognathic surgical procedure at a hospital in Korea. Methods: All the patients underwent Le Fort I osteotomy and bilateral sagittal split ramus osteotomy with rigid fixation. They were divided into two groups according to the type of IMF used&#8212;group 1 underwent surgical archwire fixation and group 2 underwent orthodontic miniscrew fixation. In a series of cephalograms for each patient, we compared vertical and horizontal tooth-position measurements: (a) immediately after surgery (T<sub>0</sub>), (b) 3 months after surgery (T<sub>1</sub>), and (c) 6 months after surgery (T<sub>2</sub>). Cephalometric changes within each group were examined using one-way analysis of variance (ANOVA) while the independent samples t-test procedure was used to compare the two groups. Results: After surgery, the maxillary incisors tended to be proclined in both groups although there were no significant differences. Incisor overbite increased significantly in both groups from T<sub>0</sub> to T<sub>1</sub>, and the miniscrew group (group 2) showed slightly greater overbite than the archwire group (group 1). Conclusions: This study suggest that the use of orthodontic miniscrews and orthodontic surgical archwire for IMF in adult patients results in similar skeletal and dental changes. [Korean J Orthod 2015;45(1):3-12]