A primary study of curvilinear distraction osteogenesis / 实用口腔医学杂志

ABSTRACT

Objective:To seek the possibility of using internally installed curved mandibular distractor to repair the partial mandibular curved defect.Methods:A curved mandibular defect was sectioned in each of 3 adult dogs.The distractor designed by our own group based on the steel ball conducted force was implanted.After 7 days of latency,the distraction was performed at the rate of 0.5 mm × 2 times per day,followed by 3 months consolidation period.The osteogenesis was evaluated by general observation,X-ray examination and HE staining.Results:No complication was observed after operation and during distraction.The new bone healed well into a curved shape.The X-ray examination revealed that the transport disc moved along with the predesigned rail curve.HE staining clearly showed neo bone formulation zone between the mature trabecular and connective tissue.Conclusion:The internal distractor based on the steel ball conducted force can realize the curved distraction osteogenesis of posteriormandibular.