Background Correction of chin underprojection has a significant effect on facial
symmetry. Alloplastic chin implants and sliding genioplasty represent the
accepted methods of chin augmentation. While both procedures may be used for
retrognathia or microgenia, the sliding genioplasty may also be used in chin
asymmetry, prognathia, and vertical height discrepancies. We report our finding
from a 5-year review of our experience with sliding genioplasty.
Objectives To evaluate the results of sliding genioplasties performed by residents
and private practitioners, to illustrate the versatility and ease of this
procedure, and to confirm the excellent clinical results obtained with minimal
Design Retrospective case review.
Setting University center and private practice.
Patients Forty-three patients, aged 16 to 52 years (mean age, 21 years), underwent
sliding genioplasty alone (8 patients) or with concomitant orthognathic surgery
Main Outcome Measures Patient satisfaction, physician satisfaction, chin movement, bone resorption,
and other complications.
Results Mean value of chin advancement was 8 mm in cases of isolated sliding
genioplasty and 4 mm when performed with orthognathic surgery. Average setback
for prognathic correction (6 patients) was 2 mm. Less than 0.5 mm of bone
resorption was encountered. Temporary unilateral mental nerve paresthesia
was noted in 1 patient. Thermal injury to the lower lip occurred in 1 patient.
Thirty-seven of 43 patients were extremely satisfied with their cosmetic result;
5 patients were very satisfied; and 1 patient was dissatisfied because of
the resultant occlusion. Physician satisfaction correlated closely with that
of the patients. Follow-up ranged from 6 months to 5 years, with an average
follow-up of 2.3 years.
Conclusions Our findings indicate excellent esthetic results with minimal complications.
Unlike alloplastic chin implants, sliding genioplasty allows correction of
many chin abnormalities, including underprojection, overprojection, chin asymmetries,
and/or vertical-height abnormalities. This underused technique is simple and
effective and should be included in the options of the facial plastic surgeon.