Mouthguard sheet temperature after heating

Mizuhashi, Fumi; Koide, Kazunori

doi:10.1111/edt.12422

Cited by 5 publications

(15 citation statements)

References 24 publications

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“…This result suggests that the appropriate heating condition of polyolefin for the pressure formation should be different from that of ethylene vinyl acetate. The results of the previous study that investigated the change of sheet temperature in the vacuum former showed that the temperature of polyolefin sheet was about 100°C at the hanging distances of 10, 15, and 20 mm . The results of the previous study are different from the results of this study.…”

Section: Discussioncontrasting

confidence: 95%

“…The results of the previous study that investigated the change of sheet temperature in the vacuum former showed that the temperature of polyolefin sheet was about 100°C at the hanging distances of 10, 15, and 20 mm . The results of the previous study are different from the results of this study. The reason for this difference is likely to be due to the difference of the environment of heating.…”

Section: Discussioncontrasting

confidence: 95%

“…However, the best heating temperature of polyolefin sheets for fabrication of mouthguards has not been determined. The change of sheet temperature of ethylene vinyl acetate and polyolefin sheets using a vacuum former has been investigated previously . In this study, the change of sheet temperature of polyolefin sheets during heating under a pressure former was investigated, and compared with that of ethylene vinyl acetate sheets.…”

Section: Discussionmentioning

confidence: 99%

“…The pressure was applied for 10 minutes, and each sheet was cooled at room temperature for 1 hour. Six specimens for each material were examined …”

Section: Methodsmentioning

confidence: 99%

“…The appropriate heating conditions for ethylene vinyl acetate are reported as 80‐120°C and the displacement distances from 10 to 20 mm . In a previous study, the change of sheet temperature of ethylene vinyl acetate and polyolefin sheets using a vacuum former was investigated . However, the change of sheet temperature during heating of polyolefin using a pressure former has not been clarified, and the appropriate heating conditions for polyolefin has also not been determined.…”

Section: Introductionmentioning

confidence: 99%

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Mouthguard sheet temperature after heating under pressure former

Mizuhashi

Koide

Mizuhashi

2019

Dental Traumatology

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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 < 0.01), and there were statistically significant differences between ethylene vinyl acetate and polyolefin sheets at the hanging distance of 10 and 15 mm (P < 0.01). The thicknesses of the pressure‐formed mouthguard at the central incisor and the first molar were greater in the mouthguards formed by ethylene vinyl acetate sheets than those with polyolefin sheets (P < 0.01 and P < 0.05, respectively). The fit of the mouthguard was not different between mouthguards formed by ethylene vinyl acetate sheets and those formed by polyolefin sheets. Conclusions The change of mouthguard sheet temperature during heating was different between ethylene vinyl acetate and polyolefin sheets. The ethylene vinyl acetate sheets maintained the mouthguard thickness in comparison with the polyolefin sheets at the same heating temperature.

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Section: Discussioncontrasting

confidence: 95%

Section: Discussioncontrasting

confidence: 95%

Section: Discussionmentioning

confidence: 99%

“…The pressure was applied for 10 minutes, and each sheet was cooled at room temperature for 1 hour. Six specimens for each material were examined …”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mouthguard sheet temperature after heating under pressure former

Mizuhashi

Koide

Mizuhashi

2019

Dental Traumatology

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Sports Dentistry: Mouthguard Research No Longer Limited to Trauma Prevention

Gutierrez

2023

Journal of the California Dental Association

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Difference in pressure‐formed mouthguard thickness according to the laminate procedure

Mizuhashi

Koide

2019

Dental Traumatology

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Aim Mouthguard thickness influences the preventive effects against dental and oral injury. The aim of this study was to examine the difference in pressure‐formed mouthguard thickness according to the laminate procedure used. Materials and methods The materials used were mouthguard sheets of 2.0‐mm and 3.0‐mm ethylene vinyl acetate, and pressure formed using a pressure former. Two forming conditions for laminated mouthguards were examined: the condition 23P used the 2.0‐mm sheet as the first layer and 3.0‐mm sheet as the second layer. The condition 32P used the 3.0‐mm sheet as the first layer and 2.0‐mm sheet as the second layer. The first layer was trimmed to cover only the anterior region; then, the second layer was formed over the first layer. Mouthguard thickness was measured at the labial surface of the central incisor, buccal surface of the first molar, and occlusal surface of the first molar. Statistical analysis was performed by two‐way analysis of variance and Bonferroni method to analyze the differences in thickness by measurement region of mouthguards and forming conditions. Results Mouthguard thickness differed in different regions of the central incisors and the first molars (P < .01). The thickness at the labial surface of the central incisor became statistically significantly larger on the 32P condition than that on the 23P condition (P < .01). The thickness at the buccal surface and the occlusal surface of the first molar became statistically significantly larger on the 23P condition than that on the 32P condition (P < .01). Conclusions The thicknesses of the labial surface of the central incisor became larger when the sheet thickness of the first layer was larger.

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Mouthguard sheet temperature after heating

Abstract: The change of mouthguard sheet temperature during heating was different between ethylene vinyl acetate and polyolefin sheets. The ethylene vinyl acetate sheets maintained the vacuum-formed mouthguard thickness in comparison with the polyolefin sheets with a better fit.

Cited by 5 publications

References 24 publications

Mouthguard sheet temperature after heating under pressure former

Mouthguard sheet temperature after heating under pressure former

Sports Dentistry: Mouthguard Research No Longer Limited to Trauma Prevention

Difference in pressure‐formed mouthguard thickness according to the laminate procedure

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