“…PDLSC were first isolated from the PDL tissue of extracted human third molar teeth [49]. PDLSC expressed MSC-related cell surface markers, CD10, CD13, CD26, CD29, CD44, CD71, CD73, CD90, CD105, CD106, CD146, CD166, CD349, STRO-1, STRO-3, and TNAP/MSCA-1 [50][51][52], as well as neural crest cell-related marker genes Snail, Slug, Twist, SOX9, SOX10, Nestin, p75NTR, CD49d, and Tuj1 [53,54]. PDLSC cultured in osteogenic medium can form mineralized nodules and demonstrate an increase in bonerelated gene expression [49] and in vivo transplantation of PDLSC into calvarial defects revealed the new bone formation within the defects [55,56], suggesting that PDLSC can differentiate into osteoblasts.…”