Analysis of complications following alveolar distraction osteogenesis and implant placement in the partially edentulous mandible

Analysis of complications following alveolar distraction osteogenesis and implant placement in the partially edentulous mandible
November 2004
By Georg Enislidis, Dr Med Univ, Dr Med Dent, Norbert Fock, Dr, Gabriele Millesi-Schobel, Dr., Clemens Klug, Dr., Gert Wittwer, Dr., Kaan Yerit, Dr., Rolf Ewers, Dr.
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology Online
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Abstract
Objective The purpose of this retrospective study was to evaluate complications before, during, and after vertical alveolar distraction osteogenesis and to assess the survival rate of s placed in distracted bone.
Study design In a consecutive series, 37 patients with 45 alveolar ridge deficiencies of the partially edentulous mandible were treated with 14 intraosseous and 31 subperiosteal distraction devices. Seventy-two s could be placed at the time of distractor removal and 21 implants at a second stage.
Results Complications associated with the distraction procedure affected 75.7% of patients. The majority of complications were of minor nature with the exception of fractures of basal bone (n=3), fracture of transport segment (n=1), breakage of distractor (n=1), and severe mechanical problems (n=3). Eleven secondary grafting procedures were necessary to allow the placement of s. Implant survival was 95.7% (mean postloading follow-up: 35.7 months).
Conclusion Vertical alveolar distraction osteogenesis is not an uncomplicated procedure; however, long-term survival of s inserted into distracted areas is satisfactory.