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Related Experiment Video

Updated: Jul 13, 2026

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

Microbiological evaluation of elastomeric chains.

Giovana Rembowski Casaccia1, Janaína C Gomes, Daniela Sales Alviano

  • 1Department of Orthodontics, Federal University of Rio de Janeiro, Brazil. giocasaccia@gmail.com

The Angle Orthodontist
|August 10, 2007
PubMed
Summary

This study found no pathogenic microorganisms on new elastomeric chains and no antimicrobial effect. Proper handling is crucial to prevent contamination, as these chains lack built-in antimicrobial properties.

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Area of Science:

  • Microbiology
  • Biomaterials Science
  • Dental Materials

Background:

  • Elastomeric chains are widely used in orthodontics.
  • Concerns exist regarding microbial contamination and potential antimicrobial properties of these devices.
  • Understanding the microbial status of orthodontic materials is vital for patient safety.

Purpose of the Study:

  • To assess the in vitro microbial load on new elastomeric chains from different manufacturers.
  • To investigate the potential inhibitory effect of elastomeric chains against common oral microorganisms.
  • To evaluate the risk of pathogenic microorganism presence upon unpacking orthodontic materials.

Main Methods:

  • Elastomeric chains from three manufacturers were incubated in growth media (agar and broth).

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The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry
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The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry

Published on: August 25, 2016

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Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction
11:17

Synthesis of Programmable Main-chain Liquid-crystalline Elastomers Using a Two-stage Thiol-acrylate Reaction

Published on: January 19, 2016

The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry
07:02

The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry

Published on: August 25, 2016

  • Samples were incubated at 37°C and analyzed over 7 days.
  • Chains were also exposed to Streptococcus mutans, Lactobacillus casei, and Candida albicans, with subsequent analysis for inhibition zones.

    • Main Results:

    • No microbial growth was detected on any elastomeric chain samples across all incubation periods.
    • No inhibition zones were observed around the elastomeric chains when exposed to oral microorganisms.
    • The study found no evidence of inherent antimicrobial activity in the tested elastomeric chains.

    Conclusions:

    • The manufacturing process for these elastomeric chains appears to adhere to biohazard safety standards.
    • The tested elastomeric chains do not possess antimicrobial agents.
    • Despite initial sterility, careful handling during orthodontic procedures is essential to prevent microbial colonization.