RESUMEN
Objective:To study the effect of bone marrow stroma cell( BM SC) transplantation combined with multi-pore mineralization ossein(Bio-Oss) in the plerosis of mandibular defect.Methods:A round whole-layer defect in the diameter of 1.5 cm was created on each side of mandible in 16 whit e New Zealand rabbits.The rabbits were randomly divided into two groups.In group 1 BMSCs were collected and cultured with mineralization induce medium for 2 wee ks. Then cell suspension at the density of 5?10 7 /ml and gelatum were mixed a nd dripped into Bio-Oss bones, incubated in DMEM in 50 ml/L CO 2 incuba tor at 37 ℃ for 4-6 h.The BMSC-Bio-Oss was applied to make plerosis of the m andibular defects.In group 2 the defects were repaired with the Bio-Oss ossein only.Samples were collected after 8 and 12 weeks after opreation respectively an d observed with radiology and histology.Results:12 weeks after o peration, (1)in group 1 previous defects were basically consisted of new bone tissue;(2)in group 2 the previous defects were mainly consisted of fibrous tis sue. Conculsions:BMSC-Bio-Oss transplantation may effectively repair bone defect.