A study of effects of mouth-guard under physical movement

物理运动下护齿套效果的研究

• 批准号: 05671658
• 负责人: HORI Jun-ichi
• 金额: $ 1.41万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05671658/
• 关键词: mouth guard; mouth protector; occlusal pressure; phonation; 顎骨々折; 顔面外傷; 外傷防禦; コンタクト・スポーツ; オクルージョン; 発音; フイットネス; マウス・ピース; 障害防禦; 顎・顔面外傷; 脳障害

The aims of this research is to clarify the problems of a ready made mouth guards that has been generally used and the needful factors in design for custum-mouth guards on the playrs of contact sports. The subjects are 67 American foot-ball playrs in university, 21 rugby playrs and 4 boxing playrs in senir high school students. We set out the questionnaire in regard to the use of mouth guard, and examined the difference of occlusal pressure between under puting mouth guard and not put. Moreover, we performed the spectrum-analysis of the voice under putting mouth gurard or not put.The typical replies submitted to the questionnaire were "incompatibility", "speak with difficulty", "feel like vomiting", and "Breathe with difficulty". The occlusal pressure integral and the contact area at the maximam clenching decreased with statistical significant under use of the mouth guard in compared with not use of it. However, the occlusal pressure per the contact area increased at maximam cleching under use of mouth-guard, a part of the formant of the [i], [e] and [o] sound which is a front and back vowel in [a], [s] and [t] series became unclear in both the subject whom complained to speak with difficulty and without after putting mouth guard, . Moreover, a consonant of [s] and [t] series disappeared. These trends were remarkable on the subjects with inarticulate pronounciation.These findings suggested that the ready-made mouth guard become rather barrier to generalize than spread of the mouth guard. The need of improving on design in palatal and labial side of a custoum made mouth guard recognized to generalize the custum made mouth guard.

这项研究的目的是阐明通常使用的现成的口罩的问题，以及在接触运动的游戏中为Custum口警设计中的必要因素。这些受试者是大学的67个美国脚球比赛，21个橄榄球游戏和4个拳击比赛中的Senir高中学生。我们列出了有关使用口罩的调查表，并检查了放口罩下的咬合压力的差异，而不是放置。此外，我们进行了对嘴巴张开或不放置的声音的光谱分析。提交问卷的典型答复是“不兼容”，“困难”，“感觉就像呕吐”和“呼吸困难”。与不使用它相比，咬合压力积分和最大紧张的接触区域随着口腔防护的统计学意义而降低。但是，在使用嘴和[i]，[e]和[O]声音的一部分的Maximam Cleching时，接触区域的咬合压力增加，这是[[A]，[S]和[T]系列中的前后元音的一部分，在这两个受试者中都不清楚，这些受试者都不清楚这些主题与难以忍受和不同意，并且没有放置口罩。此外，[s]和[t]系列的辅音消失了。这些趋势在没有发音的主题上是显着的。这些发现表明，现成的口腔后卫成为概括的障碍，而不是扬口警卫的传播。需要改善在cast骨的帕拉塔尔和唇侧的设计，以概括为了概括Custum Made的口罩。