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Related Experiment Videos

An alcohol-free tissue conditioner--a laboratory evaluation.

Hiroshi Murata1, Yasushi Narasaki, Taizo Hamada

  • 1Department of Prosthetic Dentistry, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan. hmurata@hiroshima-u.ac.jp

Journal of Dentistry
|October 12, 2005
PubMed
Summary

A new alcohol-free tissue conditioner demonstrates comparable working and gelation times to conventional ethyl alcohol-based materials. Its coated version shows superior viscoelastic properties and durability, making it a promising alternative.

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Polymer Chemistry

Background:

  • Conventional tissue conditioners often contain ethyl alcohol, which can affect their properties.
  • Development of alcohol-free alternatives is crucial for improved biocompatibility and handling.
  • Copolymers of n-butyl methacrylate/i-butyl methacrylate offer a potential base for new formulations.

Purpose of the Study:

  • To compare the properties of a novel alcohol-free tissue conditioner with conventional ethyl alcohol-containing materials.
  • To evaluate the effect of a specific coating on the alcohol-free conditioner's performance.
  • To assess viscoelastic properties, compatibility with dental stones, and water immersion stability.

Main Methods:

  • Evaluation of an alcohol-free conditioner (Fictioner) and three ethyl alcohol-containing conditioners (FITT, Hydro-Cast, SR-Ivoseal).

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  • Testing included gelation characteristics, dynamic viscoelastic properties (rheometer, viscoelastometer), and dental stone compatibility (profilometer).
  • Water immersion tests were conducted to determine weight changes over 14 days.

    • Main Results:

    • Alcohol-free conditioner exhibited similar working and gelation times to conventional materials.
    • Lower shear storage and loss moduli, with a higher loss tangent, were observed in the alcohol-free material compared to FITT and SR-Ivoseal.
    • The alcohol-free material showed minimal weight change and maintained viscoelastic properties after water immersion; coating improved property retention.

    Conclusions:

    • The coated alcohol-free tissue conditioner demonstrates potential superiority over conventional ethyl alcohol-based materials.
    • Key advantages include enhanced viscoelastic properties post-gelation, improved compatibility with dental stones, and superior durability.
    • This suggests a promising alternative for dental applications requiring stable and reliable tissue conditioning.