A new distraction device to compare continuous and discontinuous bone distraction in mini-pigs: a preliminary report |
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| Affiliation: | 2. Department of Orthopaedic Surgery, William Beaumont Army Medical Center, El Paso, Texas;3. Department of Orthopaedics, USU-Walter Reed Surgery, Bethesda, Maryland;4. Department of Orthopaedic Surgery and Rehabilitation, San Antonio Military Medical Center, Fort Sam Houston, Texas;1. Centre for Cutaneous Research, Blizard Institute, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, UK, 4 Newark Street, London E1 2AT;2. Northwick Park University Hospital, London, UK;1. Division of Informatics, Imaging & Data Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Stopford Building, Oxford Road, Manchester M13 9PT, UK;2. University of Manchester, Manchester Academic Health Sciences Centre, University Hospital of South Manchester, Southmoor Road, Wythenshawe, Manchester M23 9LT, UK;1. Department of Pharmacology, Faculty of Medicine, Toho University, 5-21-16, Omori-nishi, Ota-ku, Tokyo 143-8540, Japan;2. Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University, 3-3165, Higashi-Tamagawa Gakuen, Machida, Tokyo 194-8543, Japan;1. Specialty Registrar Trauma & Orthopaedics, North West Health Education, Liverpool, United Kingdom;2. Consultant Trauma & Orthopaedic Surgeon, Warrington Hospital, United Kingdom |
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| Abstract: | Callus-distraction has become an accepted procedure to lengthen hypoplastic mandibles in humans. Extra- and intraoral devices have been applied successfully. Systematic studies have proven the importance of direction, stability, rate and frequency in callus-distraction. In an experimental animal study a newly developed intraoral microhydraulic osteodistractor was tested. Initially the pressures necessary to distract the mandible in mini-pigs were recorded in discontinuous callus-distraction. These results were used to perform continuous bone distraction. Besides testing the new distractor and evaluating the distraction pressures, the aim of the study was to prove that direct bone growth occurred without preceding cartilage formation. Clinical and microscopic results are presented. |
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