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Articles linked to this work by shared authors, journal, and citation graph.

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In vitro study of how the undercut amount on the model labial side affects the reduction rate of laminated mouthguard thickness.

Dental traumatology : official publication of International Association for Dental Traumatology·2023
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Prioritizing model trimming to prevent thinning during mouthguard thermoforming: Influence of increased height associated with an acute model angle.

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Effective thermoforming method for maintaining mouthguard thickness with a circular sheet using a circular frame.

Mutsumi Takahashi1, Yogetsu Bando2

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

Dental Traumatology : Official Publication of International Association for Dental Traumatology
|March 11, 2022
PubMed
Summary

This study found that lowering the sheet frame and heating during mouthguard thermoforming can improve thickness. This method is key for creating thicker, protective sports mouthguards.

Keywords:
circular framemouthguardthermoformingthicknessvacuum formation

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Area of Science:

  • Sports Dentistry
  • Biomaterials Engineering
  • Orthodontics

Background:

  • Mouthguard thickness is crucial for preventing sports-related oral and facial injuries.
  • Effective thermoforming methods are needed to ensure consistent mouthguard thickness.

Purpose of the Study:

  • To develop an effective thermoforming technique for maintaining mouthguard thickness using a circular sheet and frame.
  • To evaluate the impact of different heating and forming conditions on mouthguard thickness.

Main Methods:

  • Thermoforming of 4.0-mm ethylene vinyl acetate sheets using a vacuum forming machine with a circular frame.
  • Comparison of two heating conditions (N and L) and two forming conditions (C and MP).
  • Analysis of thickness variations using two-way ANOVA and Bonferroni's test.

Main Results:

  • Significant thickness differences were observed at the incisal edge and labial/buccal surfaces across all conditions.
  • Thickness order was N-C < L-C < N-MP < L-MP, indicating the influence of heating and forming methods.
  • No significant thickness differences were found at the cusp based on heating conditions.

Conclusions:

  • Thermoforming with a circular sheet and frame alone did not guarantee sufficient thickness solely by adjusting model position.
  • Lowering the sheet frame and heating the sheet shows promise for fabricating single-layer mouthguards with a labial thickness of 3 mm or more.