The aim of this study was to evaluate the role of demineralized and particulate autogenous tooth, and interleukin-6 in bone regeneration. A demineralized and particulate autogenous tooth was prepared and human osteoblast-like cells (MG63) and human osteosarcoma cells were inoculated into the culture. The rate of cell adhesion, proliferation and mineralization were examined, and the appearance of cellular attachment was observed. An 8 mm critical size defect was created in the cranium of rabbits. Nine rabbits were divided into three groups including: An experimental group A (3 rabbits), in which a demineralised and particulate autogenous tooth was grafted; an experimental group B (3 rabbits), in which a demineralized, particulate autogenous tooth was grafted in addition to interleukin-6 (20 ng/mL); and a control group. The rabbits were sacrificed at 1, 2, 4 and 6 weeks for histopathological examination with H-E and Masson’s Trichrome, and immunohistochemistry with osteocalcin. The cell-based assay showed a higher rate of cell adhesion, mineralization and cellular attachment in the experimental group A compared with the control group. The animal study revealed an increased number of osteoclasts, newly formed and mature bones in the experimental group A compared with the control group. Eventually, a higher number of osteoclasts were observed in the experimental group B. However, the emergence of newly formed and mature bone was lower than in the experimental group A. The current results suggest that treatment with demineralized and particulate autogenous tooth and interleukin-6 is not effective in stimulating bone regeneration during the bone grafting procedure.

서 론
 재료 및 방법
  세포배양
  세포 부착율 측정
  세포 생존율 측정
  주사전자현미경 관찰
  뼈 광화력 분석
  동물실험
  Hematoxylin과 Eosin(H&E) 염색
  Masson‘s Trichrome 염색
  Immunohistochemistry
 결 과
  세포부착
  세포부착형태
  세포증식
  광화분석
  조직결과
 고 찰
 Conflict of interest
 Acknowledgements
 References

• Won Seok Jang(Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea)
• Min Gu Kim(Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea)
• Dae Suk Hwang(Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea)
• Gyoo Cheon Kim(Department of Oral Anatomy, School of Dentistry, Pusan National University, Yangsan, Korea) Correspondence to
• Uk Kyu Kim(Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University, Yangsan, Korea) Correspondence to