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Development of a Direct Pulp-capping Model for the Evaluation of Pulpal Wound Healing and Reparative Dentin Formation in Mice
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Pulp capping materials modulate the balance between inflammation and regeneration.

Thomas Giraud1, Charlotte Jeanneau2, Charlotte Rombouts2

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Dental pulp tissue can initiate inflammation and regeneration. Resin-free pulp capping materials promote regeneration, while resin-containing ones trigger inflammation, impacting healing.

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Area of Science:

  • Dental Pulp Biology
  • Regenerative Dentistry
  • Biomaterials Science

Background:

  • The dental pulp's response to injury involves complex interactions between inflammation and regeneration.
  • Understanding these processes is crucial for effective pulp capping strategies.
  • Existing research highlights the pulp's inherent regenerative potential.

Purpose of the Study:

  • To investigate the interplay between inflammation and regeneration in dental pulp.
  • To evaluate how different pulp capping materials modulate these responses.
  • To inform the development of novel biomaterials for direct pulp capping.

Main Methods:

  • Utilized in vitro and in vivo models, including cell cultures and human tooth models.
  • Examined endothelial cell and inflammatory cell interactions.
  • Assessed cell recruitment using migration chambers.
  • Investigated the effects of tricalcium silicate-based materials.

Main Results:

  • Dental pulp exhibits significant anti-inflammatory and regenerative capacities across all ages.
  • Resin-free materials (e.g., Biodentine™) promote regeneration and possess anti-inflammatory properties.
  • Resin-containing materials (e.g., TheraCal®) induce inflammation and hinder regeneration.

Conclusions:

  • Resin-free calcium silicate materials are superior for direct pulp capping due to their pro-regenerative and anti-inflammatory effects.
  • Resin-based materials may adversely affect pulp healing by promoting inflammation.
  • Future biomaterial development should focus on balancing inflammation and regeneration for optimal pulp repair.