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Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management
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Mouthguard sheet temperature after heating.

Fumi Mizuhashi1, Kaoru Koide1

  • 1Department of Removable Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata, Niigata, Japan.

Dental Traumatology : Official Publication of International Association for Dental Traumatology
|June 20, 2018
PubMed
Summary

Ethylene vinyl acetate (EVA) mouthguards retain better thickness than polyolefin ones after heating, offering a superior fit. This study compared EVA and polyolefin sheet temperatures and vacuum-formed mouthguard characteristics.

Keywords:
formationmouthguardtemperature

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Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Sports Dentistry

Background:

  • Common mouthguard materials include ethylene vinyl acetate (EVA) and polyolefin.
  • Heating-induced temperature changes in polyolefin sheets are not well-documented.
  • Understanding these thermal properties is crucial for optimizing mouthguard fabrication.

Purpose of the Study:

  • To investigate the temperature changes of EVA and polyolefin sheets during heating.
  • To evaluate the characteristics of vacuum-formed mouthguards made from these materials.

Main Methods:

  • EVA and polyolefin sheets (4.0 mm) were heated and their center displacement measured.
  • Sheet temperatures were recorded at displacements of 10, 15, and 20 mm.
  • Vacuum-formed mouthguards were fabricated at 100°C, and their thickness and fit were assessed at the central incisor and first molar.

Main Results:

  • EVA sheet temperature increased with larger hanging distances (P < 0.05), while polyolefin sheets showed no significant change.
  • Vacuum-formed mouthguards from EVA sheets were thicker at the central incisor and first molar compared to polyolefin (P < 0.01 or P < 0.05).
  • No significant difference in mouthguard fit was observed between the two materials.

Conclusions:

  • Significant differences exist in the heating-induced temperature changes between EVA and polyolefin mouthguard sheets.
  • EVA sheets contribute to maintaining mouthguard thickness, offering a better fit compared to polyolefin sheets.