Volume 41, Issue 3 pp. 363-370
ORIGINAL ARTICLE

An Experimental Study on Design and Fabrication of Sports Laminate Mouthguard for Protection Against Intraoral Injuries

Fumi Mizuhashi

Corresponding Author

Fumi Mizuhashi

Department of Removable Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata, Niigata, Japan

Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata, Japan

Correspondence:

Fumi Mizuhashi ([email protected])

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Yuko Watarai

Yuko Watarai

Department of Removable Prosthodontics, The Nippon Dental University School of Life Dentistry at Niigata, Niigata, Japan

Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata, Japan

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Ryo Mizuhashi

Ryo Mizuhashi

Comprehensive Dental Care, The Nippon Dental University Niigata Hospital, Niigata, Japan

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Tatsuhiro Suzuki

Tatsuhiro Suzuki

Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata, Japan

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Momoka Kawana

Momoka Kawana

Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata, Japan

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Kotono Nagata

Kotono Nagata

Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata, Japan

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Tomonori Niitsuma

Tomonori Niitsuma

Functional Occlusal Treatment, The Nippon Dental University Graduate School of Life Dentistry at Niigata, Niigata, Japan

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First published: 08 January 2025
Citations: 1

Funding: The authors received no specific funding for this work.

ABSTRACT

Background/Aim

Sports mouthguard should be designed and fabricated adequately. The purpose was to propose a criterion for fabricating sports laminate mouthguard with adequate thickness for protect orofacial structures.

Materials and Methods

Ethylene vinyl acetate sheet (Sports Mouthguard) was fabricated using a pressure former. Sports laminate mouthguard was designed as the first layer covered the labial, buccal, and occlusal sides, and the second layer covered the first layer. Four conditions were investigated; the combination of the sheets forming the first and second layers was 2 mm and 3 mm sheets (2 mm + 3 mm), 3 mm and 2 mm sheets (3 mm + 2 mm), 2 mm and 4 mm sheets (2 mm + 4 mm), and 4 mm and 2 mm sheets (4 mm + 2 mm). Laminate mouthguard thickness was measured at the labial, buccal, and occlusal sides. Statistical analyses were performed by two-way ANOVA and Bonferroni method for the measurement areas and laminate conditions.

Results

Laminate mouthguard thickness was significantly differed among the measurement areas (p < 0.01). The average thickness at the labial side was 2.83 mm (2 mm + 3 mm), 2.89 mm (3 mm + 2 mm), 3.51 mm (2 mm + 4 mm), and 3.53 mm (4 mm + 2 mm). Mouthguard thickness on the conditions of 2 mm + 4 mm and 4 mm + 2 mm became significantly larger compared to 2 mm + 3 mm and 3 mm + 2 mm at the labial, buccal, and occlusal sides (p < 0.01). Adequate thickness could be obtained on the conditions of 2 mm + 4 mm and 4 mm + 2 mm.

Conclusions

Sports laminate mouthguard fabricated using 2 mm sheet with 4 mm sheet could offer adequate thickness at the labial, buccal, and occlusal sides. This finding would be one of the criteria for fabricating sports laminate mouthguard.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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