Experimental study of maxillary sinus lifting with tissue engineered bone / 中华口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the effect of tissue engineering bone in maxillary sinus lifting.</p><p><b>METHODS</b>The marrow stromal stem cells of dog were cultured in DMEM containing 100 m1/L fetal bovine serum and induced to differentiate to osteoblasts, which were then inoculated together with Bio-Oss for 5 days. Sixteen dog's bilateral maxillary sinus were elevated. One side was grafted with a compound of BMSC and Bio-Oss and the other side grafted with Bio-Oss alone. The samples were studied by gross, CT, histomorphology and histomorphometrical analysis at the 30th, 90th day after the operation. t-test was used for statistical analysis.</p><p><b>RESULTS</b>In gross view and CT, new bone formation was observed in all maxillary sinus after 30 and 90 days respectively. Histomorphometrical analysis showed much more new callus in BMSC-Bio-Oss group than in Bio-Oss group (P < 0.05).</p><p><b>CONCLUSIONS</b>A better effect of new bone formation could be obtained with tissue engineered bone in maxillary sinus lifting.</p>