Basic research to propose a new design of laminated mouthguard -Effect of lamination order on thickness
Basic research to propose a new design of laminated mouthguard -Effect of lamination order on thickness
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提出一种新的层压护齿套设计的基础研究 - 层压顺序对厚度的影响
DOI：
10.1111/edt.12732
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发表时间：
2022
影响因子：
2.5
通讯作者：
Koide Kaoru
中科院分区：
文献类型：
--
作者：
Mizuhashi Fumi;Mizuhashi Ryo;Koide Kaoru
背景/目的护齿器厚度影响对口面创伤的防护能力。本研究的目的是提出一种新的设计护齿和评估的影响的层压顺序上的厚度的mouthguards.Materials和methodsMouthguard片的2.0毫米和4.0毫米的乙烯醋酸乙烯酯。使用压力成形机使片材压力成形。检查了两种层压条件：条件24 P使用2.0 mm片材作为第一层，4.0 mm片材作为第二层。条件42 P使用4.0 mm片材作为第一层，2.0 mm片材作为第二层。修剪第一层以仅覆盖前部区域，然后在第一层上形成第二层。使用测量装置在中切牙的唇侧表面以及第一磨牙的颊侧和咬合面处测量护齿厚度。通过双向方差分析对不同层压条件下形成的护齿器的测量区域的厚度差异进行了分析。ResultsMouthguard厚度在中切牙和第一磨牙的区域之间存在差异（p< .01）。42 P条件下中切牙唇侧表面的厚度（3.38 mm）在统计学上显著大于24 P条件下的厚度（3.30 mm）（p<0.05）。第一磨牙颊面和咬合面的厚度在24 P条件下显著增大（分别为2.25 mm和2.72 mm）（1.23 mm和1.44 mm，）（p< .01）结论2.0-mm和4.0-mm片的组合可以获得唇面预防所需的厚度。中切牙和第一磨牙的颊面。
Background/AimMouthguard thickness influences the protection ability from orofacial trauma. The aim of this study was to propose a new design for mouthguards and to evaluate the effect of the lamination order on the thicknesses of mouthguards.Materials and methodsMouthguard sheets of 2.0‐mm and 4.0‐mm ethylene vinyl acetate were used. The sheets were pressure formed using a pressure former. Two lamination conditions were examined: The condition 24P used the 2.0‐mm sheet as the first layer and 4.0‐mm sheet as the second layer. The condition 42P used the 4.0‐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, and then the second layer was formed over the first layer. Mouthguard thickness was measured using a measuring device at the labial surface of the central incisor, plus the buccal and occlusal surfaces of the first molar. Differences in thickness by measurement region of mouthguards formed under different lamination conditions were analyzed by two‐way analysis of variance.ResultsMouthguard thickness differed among the regions at the central incisors and the first molars (p< .01). The thickness at the labial surface of the central incisor became statistically significantly larger with the 42P condition (3.38 mm) than with the 24P condition (3.30 mm) (p< .05). The thickness at the buccal and occlusal surfaces of the first molar became statistically significantly larger with the 24P condition (2.25 mm and 2.72 mm, respectively) than with the 42P condition (1.23 mm and 1.44 mm, respectively) (p< .01).ConclusionsThe results suggest that the combination of the 2.0‐mm and 4.0‐mm sheets could obtain the necessary thickness for the prevention at the labial surface of the central incisor and buccal surface of the first molar.