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A Microfluidic Platform to Study Bioclogging in Porous Media
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Microfluidic pulp platform with vascular integration to evaluate biofunctional material.

Min-Yong Lee1, Utkarsh Mangal2, Hi-Won Yoon3

  • 1Department and Research Institute of Dental Biomaterials and Bioengineering, Yonsei University College of Dentistry, Seoul, 03722, South Korea.

Biomaterials
|May 1, 2026
PubMed
Summary
This summary is machine-generated.

A new 4D biofunctional material-to-pulp (4D BFP) platform accurately models dental pulp physiology and age-related changes. This advanced biomimetic model aids in evaluating biofunctional materials for dental applications.

Keywords:
Biofunctional materialCollagenous mature pulpMicrofluidic pulp modelVascular transitionVascularized young pulp

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Area of Science:

  • Biomaterials Science
  • Regenerative Dentistry
  • Tissue Engineering

Background:

  • Biofunctional materials aim to preserve tooth vitality by stimulating dental pulp hard tissue formation.
  • Current evaluation methods lack the complexity of native dental pulp's histology and physiology.
  • Replicating dental pulp's layered structure, microcirculation, and multicellular organization is challenging.

Purpose of the Study:

  • To develop a 4D biofunctional material-to-pulp (4D BFP) platform that mimics native dental pulp.
  • To incorporate age-dependent vascular dynamics for age-specific pulp response modeling.
  • To establish a biomimetic screening tool for biofunctional materials in dentistry.

Main Methods:

  • A 4D microfluidic pulp model integrating histoarchitecture, microcirculation, and multicellularity was created.
  • Computational fluid dynamics validated physiological flow profiles.
  • Co-culture of endothelial cell (EC) and human dental pulp stem cell (hDPSC) spheroids within a compartmentalized design.
  • Transcriptomic profiling assessed responses in young and mature models.

Main Results:

  • The 4D BFP platform successfully recapitulated key features of native dental pulp physiology.
  • Physiologically relevant flow profiles were confirmed using computational fluid dynamics.
  • Distinct age- and material-specific transcriptomic signatures were identified, related to angiogenesis and development.
  • The model demonstrated age-specific responses to biofunctional materials.

Conclusions:

  • The 4D BFP platform offers a physiologically and temporally accurate biomimetic model for dental pulp research.
  • This platform enables the study of biomaterial-dental pulp interactions with high fidelity.
  • The 4D BFP platform serves as a valuable primary screening tool for novel biofunctional materials in dentistry.