TITLE:
Horizontal Chin Bar
AUTHORS:
Mehdi Deylami Pour, Hamid Karimi, Amir-Hossein Deilami-Pour, Sara Deylami-Pour
KEYWORDS:
Long Face, Bimaxillary Surgery, Genioplasty, Segmental Osteotomy
JOURNAL NAME:
Surgical Science,
Vol.5 No.12,
December
24,
2014
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.