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KMID : 0602720110150010006
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Implantology
2011 Volume.15 No. 1 p.6 ~ p.20
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A Comparative Study of Osseointegration Using Various Grafting Materials
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Park Jin-Sung
Kim Su-Gwan
Lim Seung-Cheoul
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Abstract
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Purpose: The purpose of this study was to evaluate the bone formation utilizing various graft materials (autografts, allograft, xenograft) which were placed into bone defects around the implants.
Materials and Methods: Four bone defects using 8 mm trephine bur were made in both of the iliums of 4 mongrels. Consequently, 32 RBM surface implants were placed. No bone grafts in the bone defects were done in the control group. In the experimental groups, 3 different bone graft materials were placed in the gaps between the implant and the bone: Bio-oss for experimental group 1, TutoplastTM for experimental group 2 and spongeous bone harvested from adult dog's ilium for experimental group 3. Two adult dogs were sacrificed during the 4th and 8th weeks of the experiment respectively and tissue samples were assessed histometrically.
Results: In the control group, immature new bone formation appeared in the periosteum and endosteum of the cortical bone during the 4 weeks of placement and generally satisfactory osseointegration was observed on the interface of new bone and implant. In the 8-week group, new bone formation was replaced with the mature bone, however, new bone formation in the endosteum was continued and favorable osseointegration in the interface of implant was observed. New bone formation was the highest in experimental group 3 followed by experimental group 2 which was followed by experimental group 1. The control group had the lowest new bone formation. BIC was the highest in the experimental group 3 and the next was in the experimental group 2, and then in the experimental group 1, and then finally in the control group. The 8 week group had a greater amount of new bone formation than the 4 week group.
Conclusion: It was concluded that the autogenous bone is the best grafting material. In addition, human mineralized cancellous bone allograft showed the best new bone formation than xenogenic bone.
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KEYWORD
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allograft, autografts, guided bone regeneration, xenograft
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