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Related Experiment Videos

Eugenol diffusion through dentin related to dentin hydraulic conductance.

I Abou Hashieh1, J Camps, J Dejou

  • 1Laboratoire de Recherches, Unité IMEB, Faculté d'Odontologie, Marseille, France.

Dental Materials : Official Publication of the Academy of Dental Materials
|June 24, 1999
PubMed
Summary

Eugenol, a common dental material component, exhibits dose-dependent cytotoxicity. Zinc oxide-eugenol cement showed the highest cytotoxicity, with diffusion influenced more by material hydrolysis than dentin permeability.

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Area of Science:

  • Dental Materials Science
  • Toxicology
  • Biomaterials

Background:

  • Eugenol is widely used in temporary dental filling materials.
  • Understanding its cytotoxicity and diffusion is crucial for clinical safety.
  • Current methods for evaluating eugenol concentration and effects can be complex.

Purpose of the Study:

  • To develop an accessible method for measuring eugenol concentration in cell culture.
  • To confirm the in vitro relationship between eugenol concentration and cytotoxicity.
  • To assess the cytotoxicity of four eugenol-based temporary filling materials.
  • To investigate the interplay between dentin permeability, eugenol diffusion, and cytotoxicity.

Main Methods:

  • Spectrofluorimetry was used to quantify eugenol concentration.

Related Experiment Videos

  • MTT assay assessed L929 cell viability after exposure to eugenol.
  • Cytotoxicity of IRM, Super EBA, Kalsogen, and zinc oxide-eugenol cement was evaluated using various dilutions.
  • Hydraulic conductance (Lp) and eugenol diffusion into pulp chamber media were measured in human teeth in vitro.

    • Main Results:

    • A strong proportional relationship was observed between eugenol concentration and its effects.
    • Eugenol demonstrated cytotoxicity starting at 10⁻⁵ mol/L, with 95% cell death at 10⁻³ mol/L.
    • Zinc oxide-eugenol cement exhibited the highest cytotoxicity among the tested materials.
    • Dentin permeability showed a significant relationship with cytotoxicity and eugenol diffusion from solutions, but not from solid IRM.

    Conclusions:

    • Eugenol diffusion from zinc oxide-eugenol cement is primarily governed by the hydrolysis of eugenol from the cement matrix.
    • Dentin permeability plays a less significant role in eugenol diffusion from this specific material compared to hydrolysis.
    • The findings provide insights into the behavior of eugenol-based dental materials and their potential biological effects.