Optimal heating condition of mouthguard sheet in vacuum-pressure formation: part 2 Olefin-based thermoplastic elastomer

Dental Traumatology : Official Publication of International Association for Dental Traumatology
Mutsumi Takahashi, Kaoru Koide

Abstract

The purposes of this study were to clarify the suitable heating conditions during vacuum-pressure formation of olefin copolymer sheets and to examine the sheet temperature at molding and the thickness of the molded mouthguard. Mouthguards were fabricated using 4.0-mm-thick olefin copolymer sheets utilizing a vacuum-pressure forming device, and then, 10 s of vacuum forming and 2 min of compression molding were applied. Three heating conditions were investigated. They were, defined by the degree of sagging observed at the center of the softened sheet (10, 15, or 20 mm lower than the clamp (H-10, H-15, or H-20, respectively)). The working model was trimmed to the height of 20 mm at the maxillary central incisor and 15 mm at the mesiobuccal cusp of the maxillary first molar. The temperature on both the directly heated and the non-heated surfaces of the mouthguard sheet was measured by the radiation thermometer for each condition. The thickness of mouthguard sheets after fabrication was determined for the incisal portion (incisal edge and labial surface) and molar portion (cusp and buccal surface), and dimensional measurements were obtained using a measuring device. Differences in the thickness due to the heating condition of the sh...Continue Reading

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May 21, 2008·Dental Traumatology : Official Publication of International Association for Dental Traumatology·Julian Lindsay Geary, Martin James Kinirons
Nov 28, 2008·Nihon Hotetsu Shika Gakkai zasshi·Mutsumi TakahashiOsami Morita
Jul 22, 2014·Dental Traumatology : Official Publication of International Association for Dental Traumatology·Mutsumi TakahashiFumi Mizuhashi
Jul 22, 2014·Dental Traumatology : Official Publication of International Association for Dental Traumatology·Mutsumi TakahashiFumi Mizuhashi

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Citations

Apr 10, 2016·Dental Traumatology : Official Publication of International Association for Dental Traumatology·Mutsumi TakahashiShin-Ichi Iwasaki
Mar 16, 2017·Scientific Reports·Ryoko KuwaharaTakeshi Yamanobe
Mar 16, 2017·Dental Traumatology : Official Publication of International Association for Dental Traumatology·Mutsumi TakahashiShin-Ichi Iwasaki
Jun 23, 2018·Dental Traumatology : Official Publication of International Association for Dental Traumatology·Mutsumi Takahashi, Yogetsu Bando

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