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Related Experiment Videos

[Pulp toxicity of luting cements].

P Grund1, W H Raab

  • 1Poliklinik für Zahnerhaltung und Parodontologie, Universität Erlangen-Nürnberg.

Deutsche Zahnarztliche Zeitschrift
|November 1, 1990
PubMed
Summary

Laser-Doppler flowmetry assesses dental material biocompatibility by measuring pulp microcirculation. Tenet cement showed minimal impact, while Ketac-Cem caused temporary inflammation, influenced by cavity depth.

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Area of Science:

  • Biomedical Engineering
  • Dental Materials Science
  • Microcirculation Research

Background:

  • Assessing the biocompatibility of dental materials is crucial for patient safety and treatment success.
  • Pulp microcirculation is a sensitive indicator of tissue response to dental materials.
  • Laser-Doppler flowmetry (LDF) offers a non-invasive method to evaluate microcirculatory changes.

Purpose of the Study:

  • To evaluate the tissue tolerance of zinc phosphate cement (Tenet) and glass-ionomer cement (Ketac-Cem) using laser-Doppler flowmetry.
  • To determine the effects of these dental materials on the microcirculation of the tooth pulp.
  • To investigate the relationship between cavity preparation depth and the pulpal response to Ketac-Cem.

Main Methods:

  • Laser-Doppler flowmetry (LDF) was employed to measure changes in pulpal blood flow.
  • The study assessed both incisal and apical regions of the tooth pulp.
  • Two dental cements, Tenet (zinc phosphate) and Ketac-Cem (glass-ionomer), were tested for their effects on microcirculation.

Main Results:

  • Tenet cement demonstrated minimal to no significant changes in pulpal microcirculation, indicating good tissue tolerance.
  • Ketac-Cem induced a prolonged hyperemic response (increased blood flow) in approximately 50% of the tested teeth.
  • The hyperemic effect of Ketac-Cem appeared to be dependent on the depth of the cavity preparation.

Conclusions:

  • Laser-Doppler flowmetry is a viable method for assessing the histocompatibility of dental materials by monitoring pulpal microcirculation.
  • Tenet exhibits excellent tissue compatibility with minimal impact on pulp microcirculation.
  • Ketac-Cem may cause transient pulpal inflammation, with the severity potentially linked to cavity preparation depth, necessitating careful clinical application.

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