Abstract
Background: Correction of long face and chin retrusion has a significant effect on facial aesthetic and symmetry. Bimaxillary (Bimax.) Operation has been performed for long face and bimaxillary dentoalveolar protrusion. But bimaxillary surgery cannot address all of complex deformity of mandible. The new technique using horizontal chin bar can treat mandibular dentoalveolar protrusion and chin retrusion in one setting. Objectives: To evaluate the results of mandible segmental osteotomy and jumping genioplasty; To illustrate the versatility and the ease of this procedure and to confirm the good to excellent clinical results obtained with minimal complications. Design: Retrospective study setting, all of the patients of university hospital and private practice who seek medical attention for long face and retruded (and/or deviated) chin were included in the study. Patients and surgeons satisfaction were evaluated. Results: 45 patients, aged 19 - 30 years (mean age, 24 ± 6 years) underwent the creation of a horizontal chin bar (4 - 7 mm wide) as an axis for two opposite bone movement (and a place for fixation) of mandibular dentoalveolar segment and lower chin segment [segmental lower jaw (Kolle’s) operation and genioplasty], and/or with concomitant Bimax. operation. The mean chin advancement was 8 mm (4 - 10 mm). Average setback for mandible was 3 mm (2 - 6 mm). No bone resorption was identified. No permanent nerve paresthesia was noted. There was one case of the bar fracture due to narrowness of the bar. 37 patients were highly satisfied and 8 were satisfied with the results. There was no dissatisfaction in our patients and surgeons. Conclusion: For long face and retruded chin one of the best treatments is horizotal chin bar method with very good long-term results. EBM: Level IV.
Highlights
Bimaxillary deformity was managed with maxillary set back and body osteotomy of mandible after orthodontic management
In this study we were to evaluate the results of the new technique of using horizontal chin bar in our patients
Average setback for mandible was 3 mm (2 - 6 mm).We had only one case in whom the bar broke during the operation and it was repaired with screw and mini-plate
Summary
One of the very difficult and skill demanding deformities is bimaxillary (Bimax.) dentoalveolar protrusion. These patients usually have a long face and a retruded chin (Figure 1). Bimaxillary (Bimax.) Operation has been performed for long face and bimaxillary dentoalveolar protrusion. The new technique using horizontal chin bar can treat mandibular dentoalveolar protrusion and chin retrusion in one setting. Results: 45 patients, aged 19 - 30 years (mean age, 24 ± 6 years) underwent the creation of a horizontal chin bar (4 - 7 mm wide) as an axis for two opposite bone movement (and a place for fixation) of mandibular dentoalveolar segment and lower chin segment [segmental lower jaw (Kolle’s) operation and genioplasty], and/or with concomitant Bimax.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
