کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3144252 | 1196860 | 2008 | 9 صفحه PDF | دانلود رایگان |

SummaryObjectivesTo study the effect of two different frequencies of distraction on the quantity and architecture of bone regenerate using micro-computed tomography, and to determine whether radiographic and ultrasonographic bone-fill scores provide reliable predictive value for the amount of new bone in the distraction area.Material and methodsTwenty-six skeletally mature rabbits underwent three full days of latency, after which midface distraction was started. Low-frequency group (n = 12): a distraction rate of 0.9 mm/d achieved by one daily activation for 11 days to create a 10 mm distraction gap. High-frequency group (n = 12): idem, but three daily activations were used instead of one. Control group (n = 2) underwent no distraction. After 21 days of consolidation, bone-fill in the distraction area was assessed by means of ultrasonography and radiography. Micro-computed tomography was used to quantify new bone formation and bone architecture.ResultsRelative bone volume (BV/TV) showed a tendency towards a difference (P = 0.09) between the low and high-frequency groups. No significant differences were found for bone architecture. No significant correlation between BV/TV values and bone-fill scores was found.ConclusionsAn increase in rhythm from one to three activations daily does not create significantly more bone. Bone-fill score values provided no reliable predictive value for the amount of new bone formation.
Journal: Journal of Cranio-Maxillofacial Surgery - Volume 36, Issue 3, April 2008, Pages 143–151