Objective: We compared the skeletal and dental changes that resulted from the use of two methods of intermaxillary fixation (IMF)-miniscrews and surgical archwire-in 74 adult patients who had Class III malocclusion and were treated with the same orthognathic surgical procedure at a hospital in Korea...
Objective: We compared the skeletal and dental changes that resulted from the use of two methods of intermaxillary fixation (IMF)-miniscrews and surgical archwire-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-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 ($T_0$), (b) 3 months after surgery ($T_1$), and (c) 6 months after surgery ($T_2$). 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 $T_0$ to $T_1$, 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.
Objective: We compared the skeletal and dental changes that resulted from the use of two methods of intermaxillary fixation (IMF)-miniscrews and surgical archwire-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-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 ($T_0$), (b) 3 months after surgery ($T_1$), and (c) 6 months after surgery ($T_2$). 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 $T_0$ to $T_1$, 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.
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제안 방법
The purpose of the present study was (1) to investigate the skeletal and dental changes that occurred during postoperative orthodontic treatment involving the use of miniscrews for IMF and (2) to compare the use of miniscrew fixation and surgical archwire fixation for IMF in adult patients who had Class III malocclusion and had undergone maxillomandibular surgery.
대상 데이터
The patients consisted of 74 adults (39 male and 35 female patients; mean age, 21.7 ± 3.3 years) who had been diagnosed with skeletal Class III malocclusion and who subsequently underwent 2-jaw surgery (LeFort I osteotomy, bilateral sagittal split ramus osteotomy with rigid fixation).
The patients were divided into two groups according to fixation type (Figure 1): conventional fixation using surgical archwires with hooks (group 1: wire fixation group, 20 male and 17 female patients; mean age, 21.6 ± 3.0 years) and miniscrew fixation using orthodontic miniscrews (group 2: screw fixation group, 19 male and 18 female patients; mean age, 22.0 ± 3.6 years).
This retrospective study included patients who underwent orthognathic surgery and post-surgical orthodontic treatment between January 2012 and January 2013 at the Department of Oral and Maxillofacial Surgery, Pusan National University Dental Hospital.
데이터처리
The intraassessor reproducibility of the measurements was determined by evaluating the variables of 10 randomly selected patients twice, at 3-week intervals, according to the intraclass correlation coefficient (ICC). The mean ICC was 0.
이론/모형
05). The Duncan post-hoc test was used to determine the differences between T0 and T1.
성능/효과
In the present study, the changes in cephalometric values after 2-jaw orthognathic surgery were compared between two groups of patients, one with miniscrew fixation and the other with wire fixation. The results showed that there were no dental-change differences attributable to one or the other type of fixation, except for incisor overbite. Incisor overbite increased moderately in both groups during the post-surgical orthodontic treatment but the increase was slightly more in the wire fixation group than the miniscrew group.
참고문헌 (24)
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