Bone augmentation: alveolar distraction osteogenesis
Distraction osteogenesis involves gradual, controlled displacement of surgically created fractures which results in simultaneous expansion of soft tissue and bone volume. The regeneration chamber created by the displacement of the bone segment is gradually filled with immature non-calcified bone that calcifies during a subsequent fixation period.
The principles of distraction osteogenesis have been adapted to implant surgery to increase alveolar bone volume (Chin, 1999).
Products and Devices
- a threaded rod, which activates the device by turning the hexagonal head
- a transport plate, which is attached to the transport segment
- a stabilizing plate, which is attached to the bone bordering the horizontal osteotomy.
The segment to be distracted has to be at least 3 mm in height.
- Buccal full-thickness flap reflections to allow proper visualization of the ridge during the osteotomy.
- Intimate adaptation of the fixation plates