Comprehensive Long-Term Outcomes Following Mandibular Distraction Osteogenesis

Area of Science:

• Craniofacial surgery
• Pediatric orthognathic surgery
• Maxillofacial reconstruction

Background:

• Mandibular hypoplasia often requires surgical intervention for functional and aesthetic improvement.
• Mandibular distraction osteogenesis (MDO) is a key technique for correcting severe mandibular deficiencies.
• Long-term outcomes in diverse pediatric populations are crucial for treatment planning.

Purpose of the Study:

• To evaluate the long-term functional and aesthetic outcomes of MDO in a varied group of pediatric patients.
• To identify specific complications and success rates related to MDO in syndromic versus nonsyndromic children.

Main Methods:

• A cross-sectional study was conducted at a single tertiary-care pediatric center.
• Forty-eight patients with a minimum 4-year follow-up after MDO were assessed.
• Outcomes included respiratory status, feeding, dental development, nerve function, TMJ function, and scarring.

Main Results:

• Nonsyndromic patients (20) showed excellent respiratory and feeding outcomes without need for airway support or tube feeding.
• Syndromic patients (26) demonstrated respiratory and feeding improvements but had higher rates of CPAP use and tube feeding.
• Dental damage, particularly molar abnormalities, was more frequent in syndromic patients and those undergoing MDO before age two. Nerve function was largely preserved, with severe impairment in only 6% of syndromic patients. Scarring was minimal, and TMJ dysfunction was rare.

Conclusions:

• MDO provides significant long-term benefits for respiratory and feeding issues in both syndromic and nonsyndromic pediatric patients.
• While nonsyndromic patients experience predominantly favorable outcomes, syndromic patients require careful monitoring for dental and nerve complications.
• MDO is a safe and effective procedure for mandibular advancement in children, with generally good long-term results and manageable complications.