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Use of Trowell-Type Organ Culture to Study Regulation of Dental Stem Cells
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Biological Matrices Promote Odontoblastic Markers Expression in Stem Cells from Apical Papilla: An In Vitro Study.

J C Caro1, C Bucchi2, N Ponce3

  • 1Programa de Magister en Ciencias Médicas, Facultad de Medicina, Universidad de Valparaíso, Viña del Mar, Chile; Laboratorio de Fisiología Molecular y Biofísica, Facultad de Odontología, Universidad de Valparaíso, Valparaíso, Chile.

Journal of Endodontics
|March 20, 2026
PubMed
Summary
This summary is machine-generated.

Both decellularized dental pulp and collagen scaffolds promote odontoblastic marker expression in stem cells from the apical papilla (SCAPs). Collagen scaffolds are a cost-effective option for pulp regeneration, though further research is needed.

Keywords:
Biological matricesodontoblast differentiationpulp regenerationstem cells of the apical papilla

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Dental Research

Background:

  • Odontoblastic differentiation is crucial for dentin formation and requires specific microenvironmental cues.
  • Stem cells from the apical papilla (SCAPs) are promising candidates for pulp regeneration.
  • Effective scaffolds are needed to guide SCAP differentiation into odontoblasts.

Purpose of the Study:

  • To evaluate the efficacy of decellularized human dental pulp and commercial collagen sponge scaffolds in promoting odontoblastic differentiation of SCAPs.
  • To investigate the influence of dentin discs on SCAP differentiation within these scaffolds.

Main Methods:

  • SCAPs were cultured on decellularized dental pulp and collagen sponge scaffolds, with and without dentin discs, in a 3D culture model for four weeks.
  • Histological analysis and immunohistochemistry were performed to assess the expression of odontoblastic markers: dentin sialophosphoprotein (DSPP), dentin matrix protein 1 (DMP1), and alkaline phosphatase (ALPL).

Main Results:

  • Both decellularized pulp and collagen scaffolds supported the expression of DSPP, DMP1, and ALPL by SCAPs.
  • Dentin discs appeared to enhance DMP1 expression in both scaffold types.
  • Dentin discs reduced ALPL levels in the decellularized pulp scaffold group.

Conclusions:

  • Decellularized dental pulp and collagen scaffolds can support odontoblastic differentiation of SCAPs.
  • Commercial collagen sponge presents a cost-effective and available alternative for regenerative endodontic applications.
  • Further investigation is warranted to validate these findings and optimize scaffold design for pulp regeneration.