Mouthguard sheet temperature after heating under pressure former

Background/Aim Ethylene vinyl acetate and polyolefin sheets have been used commonly for fabricating mouthguards. However, the change of the sheet temperature during heating of the polyolefin has not been clarified. The aim of this study was to examine the effects of changing the sheet temperature du...

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Bibliographic Details
Published in:Dental traumatology 2019-04, Vol.35 (2), p.142-146
Main Authors: Mizuhashi, Fumi, Koide, Kaoru, Mizuhashi, Ryo
Format: Article
Language:English
Subjects:
Acetic acid
Dentistry
Ethylene
mouthguard
Polyolefins
Pressure
pressure formation
Statistical analysis
Temperature
Temperature effects
Vinyl acetate
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Summary:Background/Aim Ethylene vinyl acetate and polyolefin sheets have been used commonly for fabricating mouthguards. However, the change of the sheet temperature during heating of the polyolefin has not been clarified. The aim of this study was to examine the effects of changing the sheet temperature during heating, and to examine whether there were any differences between the sheet materials. Materials and methods The mouthguard materials used were 4.0 mm sheets of ethylene vinyl acetate and polyolefin. The sheet temperature of the two materials was measured when the center of the sheet was displaced by 10, 15, and 20 mm from the baseline after heating. The sheets were pressure‐formed when the heating temperatures reached 100°C. Mouthguard thickness and fit were measured at the central incisor and the first molar. Differences in the sheet temperature and the thickness between the sheet materials were analyzed by two‐way analysis of variance. Results The sheet temperature of ethylene vinyl acetate and polyolefin sheets became higher as the hanging distance became larger (P 
ISSN:1600-4469
1600-9657
DOI:10.1111/edt.12458