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The International Journal of Oral & Maxillofacial Implants



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Int J Oral Maxillofac Implants 16 (2001), No. 1     15. Feb. 2001
Int J Oral Maxillofac Implants 16 (2001), No. 1  (15.02.2001)

Page 43-51

Vertical Distraction Osteogenesis of Edentulous Ridges for Improvement of Oral Implant Positioning: A Clinical Report of Preliminary Results
Chiapasco, Matteo / Romeo, Eugenio / Vogel, Giorgio
This study examined the opportunities offered by intraoral distraction osteogenesis to vertically elongate insufficient alveolar ridges and thereby improve local anatomy for ideal implant placement. Eight patients presenting with vertically deficient edentulous ridges were treated by means of the distraction osteogenesis principle with an intraoral alveolar distractor. Two to 3 months after consolidation of the distracted segments, 26 implants were placed in the distracted areas. Four to 6 months later, abutments were connected and prosthetic loading of the implants was started. The mean follow-up after initial prosthetic loading was 14 months. In all patients, the desired bone gain was reached at the end of distraction (mean vertical bone gain of 8.5 mm). Probing depth, Bleeding Index, and Plaque Index around implants were evaluated, and Periotest values were also calculated. The cumulative success rate of implants was 100%. Radiographic examinations 12 months after functional loading of implants showed a significant increase in the density of the newly generated bone in the distracted areas. This technique seems to be reliable, and the regenerated bone has withstood the functional demands of implant loading. Success rates of implants, periodontal indices of peri-implant soft tissues, and Periotest values were consistent with those reported in the literature regarding implants placed in native bone.