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Bone healing after biodegradable mini-plate fixation

Atali, Onur; Gocmen, Gokhan; Aktop, Sertac; Ak, Esin; Basa, Selcuk; Cetinel, Sule.
Acta cir. bras.; 31(6): 364-370, June 2016. ilus, tab
Artigo em Inglês | VETINDEX | ID: vti-20126


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.(AU)
Biblioteca responsável: BR68.1
Localização: BR68.1