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用于运动护齿的弹性聚合物的减震行为：热塑性成型与增材制造的体外比较

Shock Absorption Behavior of Elastic Polymers for Sports Mouthguards: An In Vitro Comparison of Thermoplastic Forming and Additive Manufacturing.

作者信息

Schewe Philipp, Roehler Ariadne, Spintzyk Sebastian, Huettig Fabian

机构信息

Department of Prosthodontics, Center for Dentistry, Oral Medicine and Maxillofacial Surgery, University Hospital Tuebingen, 72076 Tübingen, Germany.

Medical Materials Science and Technology, University Hospital Tuebingen, 72076 Tübingen, Germany.

出版信息

Materials (Basel). 2022 Apr 17;15(8):2928. doi: 10.3390/ma15082928.

DOI:10.3390/ma15082928
PMID:35454621
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9028363/
Abstract

BACKGROUND

There are several in vitro testing options to investigate the efficacy of sports mouthguards. None of these represent everyday situations, but the effects of simple laws of physics can be observed. This enables the comparison of conventional materials for mouthguards towards fabrications from additive manufacturing.

METHODS

A ball-drop experiment measured the maximum force and temporospatial distribution of a vertical impact on six material groups and a reference group (No-MG). Three conventional materials (ethylenvinylacetate) with 1, 2, and 3 layers were compared with additively manufactured (AM) specimens of comparable layering with a respective thickness of 4 mm, 5 mm, and 6.8 mm.

RESULTS

A maximum force of 8982.35 N ± 305.18 (No-MG) was maximum damped to 2470.60 N ± 87.00 (conventional 6.8 mm) compared with 5585.09 N ± 203.99 (AM 6.8 mm) Thereby, the ratio between shock absorption per millimeter was best for 4 mm thickness with means of 1722 N (conventional) and 624 N (AM).

CONCLUSIONS

Polymer layers demonstrated a force reduction up to 71.68%. For now, additively processed resins of comparable hardness and layering are inferior to conventional fabrications.

摘要

背景

有几种体外测试方法可用于研究运动护齿器的功效。这些方法均无法模拟日常情况，但可以观察到简单物理定律的作用效果。这使得能够将传统护齿器材料与增材制造的产品进行比较。

方法

通过落球实验测量了对六个材料组和一个参照组（无护齿器）进行垂直撞击时的最大力和时空分布。将三种具有1层、2层和3层的传统材料（乙烯-醋酸乙烯酯）与具有相似分层且厚度分别为4毫米、5毫米和6.8毫米的增材制造（AM）样品进行了比较。

结果

最大力8982.35牛±305.18（无护齿器）最大可衰减至2470.60牛±87.00（传统6.8毫米），而增材制造6.8毫米的为5585.09牛±203.99。因此，每毫米减震的比率在厚度为4毫米时最佳，传统材料的平均值为1722牛，增材制造材料的平均值为624牛。

结论

聚合物层的力降低高达71.68%。目前，硬度和分层相似的增材加工树脂不如传统制造产品。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/1c703f634b9b/materials-15-02928-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/e855b74e1cb5/materials-15-02928-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/1b09053601a9/materials-15-02928-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/f01f3705600f/materials-15-02928-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/9eb72dba0ca2/materials-15-02928-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/1c703f634b9b/materials-15-02928-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/e855b74e1cb5/materials-15-02928-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/1b09053601a9/materials-15-02928-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/f01f3705600f/materials-15-02928-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/9eb72dba0ca2/materials-15-02928-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0980/9028363/1c703f634b9b/materials-15-02928-g005.jpg

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The Impact of Sport Training on Oral Health in Athletes.运动训练对运动员口腔健康的影响。
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Dental trauma and tongue injuries in professional alpine ski racing-A worldwide survey.专业高山滑雪比赛中的牙外伤和舌损伤——一项世界性调查。
Dent Traumatol. 2021 Jun;37(3):414-418. doi: 10.1111/edt.12643. Epub 2020 Dec 29.
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Present Status in Polymeric Mouthguards. A Future Area for Additive Manufacturing?聚合物护齿器的现状。增材制造的未来领域？
Polymers (Basel). 2020 Jul 3;12(7):1490. doi: 10.3390/polym12071490.
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3D Printing in Dentistry-State of the Art.口腔 3D 打印：现状。
Oper Dent. 2020 Jan/Feb;45(1):30-40. doi: 10.2341/18-229-L. Epub 2019 Jun 7.
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Comparison of the shock absorption capacities of different mouthguards.不同护齿器减震能力的比较。
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