TITLE:
Effect of Molding Technique That Move Model Position Just before Formation in Production of Laminated Mouthguard
AUTHORS:
Mutsumi Takahashi, Yogetsu Bando
KEYWORDS:
Laminated Mouthguard, Thermoforming, Molding Technique, Thickness
JOURNAL NAME:
Materials Sciences and Applications,
Vol.14 No.6,
June
15,
2023
ABSTRACT: Many molding techniques have been researched to ensure the thickness of custom mouthguards. The aim of this study was to clarify the effect on the thickness of a laminated mouthguard of a molding technique in which the model position is moved forward just before molding. Mouthguards were molded using a 3.0-mm-thick ethylene vinyl acetate mouthguard sheet and a pressure molding machine. The molding method was the normal molding method (condition C) and the molding technique (condition MP) in which the model position was moved 20 mm forward just before molding. Regarding the molding of the first layer (F) and the second layer (S), the following four molding methods based on the combination of conditions C and MP were compared; FC-SC, FC-SMP, FMP-SC, and FMP-SMP. Differences in mouthguard thickness due to molding conditions for the first and second layers were analyzed by two-way ANOVA and Bonferroni’s multiple comparison test. Significant differences were observed among all molding conditions on the labial surface, and the thicknesses were in the order FC-SC