Preliminary Study for Developing a New Mouthguard Material

Difference among shock‐absorbing capabilities of mouthguard materials

“…Polystyrene-polyolefin copolymer-based materials have high shock absorption properties that are equal to or greater than those of EVA and polyolefin (22). EVA, polyolefin, and polystyrene-polyolefin copolymer were compared in the present study in line with many previous studies (6,20,(22)(23)(24)(25)(26)(27)(28).…”

“…Several studies have investigated the shock absorption properties of various mouthguard sheet materials, but these results cannot be compared simply because of differences in experimental systems (Charpy or Izod impact test, free-falling ball impact test, and pendulum impact test), such as impact objects (cricket ball, hockey ball, and stainless steel ball) (6,(23)(24)(25)(26)(27)(28).…”

Application of addition-cured silicone denture relining materials to adjust mouthguards

“…Most dental silicone materials comprise addition-cured silicone. The impact absorption capacity of additioncured silicone denture relining materials is as high as that of conventional mouthguard materials according to the results of previous studies 11) . Therefore, we focused on addition-cured silicone denture relining materials for adjustment of mouthguards.…”

“…Yokota et al 11) found that the load absorbance of two commercial mouthguard materials was 38% and that of dental silicone materials was 34-49% when compared with a control group in regard to MIF. In addition, the MIF-t was 1.15-1.18-fold longer (commercial mouthguard sheets) and 1.03-1.32-fold longer (dental silicone materials) than that of the control group.…”

“…We thus considered using a common silicone material in dentistry in order to improve the fitness and retention of mouthguards without heat. A previous study found that the impact absorption capacity of some silicone compounds is as high as that of conventional mouthguard materials 11) . We therefore used addition-cured silicone lining materials in this study, and compared their shock absorption properties with those of conventional thermoforming mouthguard materials in order to determine their applicability to mouthguard adjustment.…”