Distraction osteogenesis for cleft palate closure in a canine model

Area of Science:

• Veterinary Surgery
• Craniofacial Surgery
• Regenerative Medicine

Background:

• Cleft palate is a common congenital condition requiring surgical intervention.
• Traditional surgical repair of palatal defects can be challenging, especially in complex cases.
• Distraction osteogenesis (DO) offers a method for gradual bone lengthening and defect closure.

Purpose of the Study:

• To evaluate the effectiveness and safety of distraction osteogenesis (DO) for closing surgically created hard palate clefts in a canine model.
• To assess the potential of DO as an alternative or adjunct to conventional surgical techniques for palatal reconstruction.

Main Methods:

• A midline hard palate cleft was surgically created in 10 mature dogs.
• Eight dogs received customized DO devices for gradual bone distraction at 1 mm/day after a 10-day latency period.
• Bone healing was analyzed using fluorochrome labeling and traditional histology following a 14-day consolidation period.

Main Results:

• Distraction osteogenesis was well-tolerated, with no serious complications reported in the experimental group.
• Complete bony closure of the hard palate cleft was achieved in 5 out of 8 dogs treated with DO.
• Bone resorption and incomplete closure were observed in 3 dogs, as well as in the two control dogs without distraction.

Conclusions:

• Distraction osteogenesis is a safe and feasible technique for addressing hard palate clefts in a canine model.
• DO demonstrated efficacy in achieving bony closure of palatal defects in a significant portion of the treated dogs.
• The findings support further investigation into the innovative application of DO for treating human cleft palate patients.