Mandibular alveolar ridge augmentation in the dog using distraction osteogenesis

Purpose: This study investigated the use of distraction osteogenesis for alveolar ridge augmentation. Materials and Methods: Four dogs each had two superior and two inferior implants placed horizontally into an edentulous mandibular quadrant and, after integration, a distraction device was applied. An osteotomy was made to allow the ridge to be distracted vertically. After 10 mm vertical distraction, the device was stabilized. Results: The vertical augmentation averaged 8.85 +/- 1.05 mm after 10 weeks of healing. Serial sections showed that bone had formed between the distracted segments, creating an augmented ridge. Conclusions: Distraction osteogenesis has the potential for use in augmentation of the alveolar ridge.