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Related Experiment Videos

Diffusion of calcium through dentin

I C Gomes1, O Chevitarese, N S de Almeida

  • 1Department of Endodontics, Fluminense Federal University, Niterói, Brazil.

Journal of Endodontics
|November 1, 1996
PubMed
Summary
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Calcium hydroxide paste in root canals facilitates calcium ion diffusion through dentin. This diffusion was observed within 16 days in all tested conditions with the paste present.

Area of Science:

  • Endodontics
  • Biomaterials Science
  • Dental Research

Background:

  • Calcium hydroxide [Ca(OH)2] is widely used in endodontics.
  • Understanding its diffusion through dentin is crucial for treatment efficacy.

Purpose of the Study:

  • To determine if calcium ions from Ca(OH)2 paste diffuse through root dentin to the root surface.
  • To quantify calcium diffusion under different paste conditions.

Main Methods:

  • Six teeth underwent biomechanical preparation and smear layer removal.
  • Teeth were subjected to three phases: dissolution, dissolution/diffusion I, and dissolution/diffusion II.
  • Calcium ion diffusion was measured in solutions surrounding teeth with and without Ca(OH)2 paste.

Main Results:

Related Experiment Videos

  • Calcium diffusion was observed within 16 days when Ca(OH)2 paste was present in the root canals.
  • Diffusion was greatest in the group with fresh paste replacement, followed by the diluted paste group.
  • Statistically null calcium diffusion was found in the control group without paste.

Conclusions:

  • Calcium hydroxide paste facilitates the diffusion of calcium ions through root dentin.
  • The presence and condition of the Ca(OH)2 paste significantly influence calcium ion diffusion rates.
  • This diffusion may have implications for the therapeutic effects of Ca(OH)2 in root canal treatments.