4.7 Article

Pulp regeneration by transplantation of dental pulp stem cells in pulpitis: a pilot clinical study

期刊

STEM CELL RESEARCH & THERAPY
卷 8, 期 -, 页码 -

出版社

BMC
DOI: 10.1186/s13287-017-0506-5

关键词

Clinical study; Pulp regeneration; Mobilized dental pulp stem cells (Mobilized DPSCs); Autologous celltransplantation; Granulocyte colony-stimulating factor (G-CSF); Pulpectomy; Good manufacturing practice (GMP)

资金

  1. Budget for promoting science and technology in Japan
  2. Ministry of Health, Labour and Welfare

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Background: Experiments have previously demonstrated the therapeutic potential of mobilized dental pulp stem cells (MDPSCs) for complete pulp regeneration. The aim of the present pilot clinical study is to assess the safety, potential efficacy, and feasibility of autologous transplantation of MDPSCs in pulpectomized teeth. Methods: Five patients with irreversible pulpitis were enrolled and monitored for up to 24 weeks following MDPSC transplantation. The MDPSCs were isolated from discarded teeth and expanded based on good manufacturing practice (GMP). The quality of the MDPSCs at passages 9 or 10 was ascertained by karyotype analyses. The MDPSCs were transplanted with granulocyte colony-stimulating factor (G-CSF) in atelocollagen into pulpectomized teeth. Results: The clinical and laboratory evaluations demonstrated no adverse events or toxicity. The electric pulp test (EPT) of the pulp at 4 weeks demonstrated a robust positive response. The signal intensity of magnetic resonance imaging (MRI) of the regenerated tissue in the root canal after 24 weeks was similar to that of normal dental pulp in the untreated control. Finally, cone beam computed tomography demonstrated functional dentin formation in three of the five patients. Conclusions: Human MDPSCs are safe and efficacious for complete pulp regeneration in humans in this pilot clinical study.

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