4.2 Article

Tissue Engineering with Dental Pulp Stem Cells: Isolation, Characterization, and Osteogenic Differentiation

Journal

JOURNAL OF CRANIOFACIAL SURGERY
Volume 23, Issue 6, Pages E571-E575

Publisher

LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/SCS.0b013e31825e4e16

Keywords

Bone tissue engineering; bone regeneration; cell culture; dental stem cell

Categories

Funding

  1. ISCIII [FIS EC07/90762, RETICS RD/0010/2012]
  2. Junction Program of Biomedical Research in Advanced Therapies and Regenerative Medicine
  3. ISCIII
  4. FFIS
  5. Fundacion Seneca [08859/PI/08]

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Introduction: Dental pulp stem cells (DPSCs) are adult mesenchymal stem cells that have the ability to differentiate into osteoblasts, a fact that is very interesting in the context of tissue engineering. Our purpose was to isolate and characterize DPSCs and to compare the differentiation potential of 3 different osteogenic media. Patients and Methods: Human dental pulp extracted from healthy young adults was placed in flasks with a mesenchymal expansion medium. At passage 4 DPSCs were analyzed for cell-cycle stage, proliferation, viability, and immunophenotype. DPSCs were grown in 3 different osteogenic media for 40 days. Flasks were incubated at 37 degrees C in 5% CO2, and the medium was changed twice a week. At day 40, the mineralization of the matrix was determined with Alizarin Red S dye. Results: After osteogenic induction, DPSCs developed mineralization nodules (clusters), as revealed by Alizarin Red staining. This staining was stronger in the Osteodiff (Miltenyi) medium when compared to the other osteogenic media. Conclusions: This study demonstrates the ability of DPSC to differentiate into osteoblasts, especially in the presence of Osteodiff (Miltenyi). DPSCs are therefore a good candidate model for the study of hard-tissue mineralization.

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Comments

Wai Lo
Just wondering roughly how many dental stem cells can be isolated from a dental pulp. And most of the time when we have a tooth extraction, the dental soft tissue (with dental pulp) has been infected or has some inflammation. Not sure how good of the stem cells within the tissue.

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