Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (11): 1653-1658.doi: 10.3969/j.issn.2095-4344.2014.11.003

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Autologous bone marrow aspirate concentrate repairs peri-implant bone defect

Yang Ying1, Zhong Wei-jian2, Liu Guo3, Ma Guo-wu2   

  1. 1Department of Oral Implantology, Affiliated Stomatological Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China; 2Department of Oral and Maxillofacial Surgery, Stomatology College of Dalian Medical University, Dalian 116085, Liaoning Province, China; 3Department of Conservative & Endodontic Dentistry, Affiliated Stomatological Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China
  • Revised:2014-01-11 Online:2014-03-12 Published:2014-03-12
  • Contact: Ma Guo-wu, M.D., Professor, Department of Oral and Maxillofacial Surgery, Stomatology College of Dalian Medical University, Dalian 116085, Liaoning Province, China
  • About author:Yang Ying, Master, Physician, Department of Oral Implantology, Affiliated Stomatological Hospital of Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China

Abstract:

 BACKGROUND: Autologous bone marrow aspirate concentrate is often applied in patients from Department of Orthopedics and those with severe limb ischemia, but rarely applied in Department of Oral and Maxillofacial Surgery, especially in Department of Oral Implantology. The effect of autologous bone marrow aspirate concentrate on promoting peri-implant bone regeneration deserves further studies.

OBJECTIVE: To evaluate the effect of bone marrow aspirate concentrate in the repair of peri-implant bone defect.
METHODS: Bone marrow 5 mL was extracted from posterior superior iliac spine of experimental dogs and bone marrow cells were counted before and after concentration. Bone defect (4 mm × 4 mm × 4 mm) was prepared in the middle of bilateral mandibular premolar, which was randomly implanted with gelatin sponge plus bone marrow aspirate concentrate, autologous bone and gelatin sponge. At 4 and 12 weeks after surgery, bone defect specimens were histologically observed. The new bone formation rate and new bone mineral density were calculated.
RESULTS AND CONCLUSION: After centrifugation, the concentrations of nucleated cells in bone marrow aspirate concentrate were increased by (2.78±0.22) times. More colony-forming units were found after cell culture. Histological analysis showed that, significantly higher new bone formation rate and new bone mineral density occurred in gelatin sponge plus bone marrow aspirate concentrate group, compared with autologous bone group and gelatin sponge group at 4 weeks (P < 0.05). The new bone formation rate in gelatin sponge plus bone marrow aspirate concentrate group was significantly lower than that of autologous bone group, and higher than that of gelatin sponge group at 12 weeks (P < 0.05). However, the difference of new bone mineral density in the three groups was not significant (P > 0.05). Autologous bone marrow aspirate concentrate can significantly improve new bone mineral density and quantity in the pre-implant bone defect.


中国组织工程研究
杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程


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Key words: dental implants, bone marrow, bone regeneration, gelatin sponge, absorbable

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