Extended genioplasty: long-term cephalometric, morphometric and sensory results

Area of Science:

• Oral and Maxillofacial Surgery
• Plastic Surgery
• Aesthetic Surgery

Background:

• Genioplasty involves critical technical steps including incision, dissection, osteotomy design, and fixation.
• Evaluating novel surgical techniques is essential for improving patient outcomes in chin augmentation procedures.

Purpose of the Study:

• To describe an extended genioplasty technique.
• To assess the stability of chin position, form, and surface area after the procedure.
• To determine the incidence of postoperative sensory deficits.

Main Methods:

• A retrospective review of 15 adult patients undergoing the extended genioplasty.
• The technique involved labial vestibule incision, mental nerve mobilization, specific osteotomy, and rigid fixation.
• Analysis of lateral cephalograms and neurosensory data at immediate post-op and long-term follow-up (> 6 months).

Main Results:

• Immediate post-operative results showed a mean sagittal advancement of +8.7 mm and a surface area increase of +1.1 cm2.
• No significant changes in chin position or surface area were observed at the latest follow-up.
• All evaluated patients (12/12) experienced functional sensory return, and the inferior border form was consistently smooth.

Conclusions:

• The described extended genioplasty technique offers stable chin augmentation.
• The procedure demonstrates a favorable safety profile with a high rate of sensory recovery.
• This technique provides predictable aesthetic and functional results in genioplasty surgery.