Distraction_Osteogenesis_Presentation.pptx

Study purpose

1. Distraction Osteogenesis (DO) • A surgical technique for bone lengthening and reconstruction. • Introduced by Gavriil Ilizarov in orthopedics, later adapted for craniofacial surgeries. • Utilizes the body’s natural healing response by gradual mechanical traction. Clinical Uses: • Mandibular deficiency, maxillary hypoplasia, cleft alveolus, cranial deformities.

2. Phases of Distraction Osteogenesis 1. Osteotomy Phase: Surgical bone cut under sterile conditions. 2. Latency Phase (5–7 days): Time for initial healing and callus formation. 3. Distraction Phase (1 mm/day): Gradual separation of bone segments using devices. 4. Consolidation Phase (6–12 weeks): Mineralization and hardening of new bone.

3. Devices Used and Advantages Devices Used: • External Devices: Ilizarov frame, RED (Rigid External Distractor). • Internal Devices: Monocortical distraction plates, bone-borne devices. Advantages: • No need for bone grafts. • Simultaneous bone and soft tissue expansion. • Reduced relapse compared to conventional surgery.