Author/Authors :
Atali, Onur Department of Oral & Maxillofacial Surgery - Faculty of Dentistry - Marmara University, Istanbul, Turkey , Gocmen, Gokhan Department of Oral & Maxillofacial Surgery - Faculty of Dentistry - Marmara University, Istanbul, Turkey , Aktop, Sertac Department of Oral & Maxillofacial Surgery - Faculty of Dentistry - Marmara University, Istanbul, Turkey , Ak, Esin Department of Histology & Embryology - Faculty of Dentistry - Marmara University, Istanbul, Turkey , Basa, Selcuk Department of Oral & Maxillofacial Surgery - Faculty of Dentistry - Marmara University, Istanbul, Turkey , Cetinel, Sule Department of Histology & Embryology - Faculty of Dentistry - Marmara University, Istanbul, Turkey
Abstract :
PURPOSE:
To compare bone healing in mandibular vertical body osteotomies (MVBO) after fixation with a resorbable 2.0mm-profile fixation system in the first and third postoperative months in rabbits.
METHODS:
Twenty hemimandibles of ten rabbits were divided into two groups according to duration of resorbable fixation-one or three months. The MVBOs were performed and one four-hole, resorbable, 2.0mm mini-plate fixation system was used on each side. The computed tomography (CT) scans, scanning electron microscopy (SEM), and histomorphometric outcomes of groups I and II were compared.
RESULTS:
Significant differences were found between the one- and three- month assessments in terms of newly formed bone ratio values (p<0.05). There was more new bone formation at the third month on both the CT and histomorphometric examinations. A better adaptation of the bone tissues to the resorbable mini-plate and screws was observed on SEM at three months.
CONCLUSION:
The resorbable mini-plates provided a fixation stable enough to allow immediate oral alimentation and callus formation in both groups.
Keywords :
Absorbable Implants , Tomography , X-Ray Computed , Mandibular Fractures , Osteotomy , Microscopy , Electron Scanning , Rabbits
