Volume 5, Issue 2 (5-2020)                   J Res Dent Maxillofac Sci 2020, 5(2): 26-33 | Back to browse issues page

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Sarkarat F, Vahdati S, Mahaseni aghdam H, Nematallahi Z, Farahmand M. Bone Repair via Osteon and Bio-Oss: A Comparative Histological and Histomorphometric Animal Study. J Res Dent Maxillofac Sci 2020; 5 (2) :26-33
URL: http://jrdms.dentaliau.ac.ir/article-1-271-en.html
1- Associated Prof, Department of Oral and Maxillofacial Surgery and Craniomaxillofacial Research Center, Dental Faculty, Tehran Medical Sciences
2- Doctor of Dental Surgery, Advanced Specialty Education Programs in Endodontics and Implant Dentistry
3- Assistant Prof, Department of Oral and Maxillofacial Surgery and Craniomaxillofacial Research Center, Dental Faculty, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran. , hamidmahaseni@gmail.com
4- Doctor of Dental Surgery, Craniomaxillofacial Research Center, Dental Faculty, Tehran Medical Sciences
5- Postgraduate Student, Department of Orthodontics, Dental Faculty, Tehran Medical Sciences
Abstract:   (2850 Views)

Background and Aim: Autogenous bone grafts are considered the gold standard although they have several disadvantages, leading to a search for suitable alternative graft biomaterials. This study evaluates the histological and histomorphometric properties of regenerated bone in defects in rabbits following the application of two commercially available xenografts (Bio-Oss and Osteon).
Materials and Methods: This animal study was carried out on 14 New Zealand rabbit calvaria. Four 6.5-mm critical-size defect (CSD) models of bone regeneration were formed in each surgical site. The first defect was filled with Bio-Oss, the second with large Osteon (L-Osteon), the third with small Osteon (S-Osteon), and the last one remained unfilled (the control group). The cases were sacrificed. Bone forming properties (amount of new bone formation, inflammation, and foreign body reaction) were observed at 4- and 8-week intervals through histological and histomorphometric examinations. The Friedman test, Kruskal-Wallis test, and Wilcoxon test for multiple comparisons were used for data analysis. The level of statistical significance was set at 0.05.
Results: There was no statistically significant difference for regenerated bone among the four groups (P>0.05). The L-Osteon site showed more inflammation and foreign body reaction compared to the other groups. 
Conclusion: The results of this study showed that Bio-Oss and Osteon appear to be highly biocompatible and osteoconductive and can thus successfully be used as bone substitutes in augmentation procedures.

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