A study on the relationship between type of mouth guard and Gravity Fluctuation

最近在日本，参加体育运动的人数一直在增加，这可能是因为健康意识的提高；他们也越来越意识到可能的运动伤害。尽管人们对口腔部位受伤的担忧低于对身体其他部位的担忧，但仍有许多人在从事适合自己的运动时佩戴市面上有售的护口器。这些都表明，定制口罩的可用性还不够了解。在这项研究中，我对定制的护口器和市场上的护口器进行了咬合状况和重力波动的比较。受试者是20名从未在某种运动中使用过护口器的成年人。佩戴市售口罩和定制口罩各3个月，分别在佩戴口罩后即刻、1个月、3个月测量咬合情况和重力波动的变化。市场上的护口器是口型的，定制的口罩是通过座椅加压的方法制作的，覆盖前牙的部分厚度为3 mm。结果表明，两种护口器的总咬合力和接触面积都没有变化。商业护口器使用1个月后，重力波动的距离小于开始佩戴护口器时的距离。在定制护口器的情况下，使用1个月后的重力波动距离小于佩戴护口器后的距离，差异有统计学意义。

Recently in Japan the number of people participating in sports has been increasing, probably due to increased heath awareness; and they are also becoming more conscious of possible sports injury. Although concern about injury to the oral area is lower than that to other parts of the body, there are many people who wear a commercially available mouth guard when engaging in sports for which one is appropriate. These things show that availability of custom-made mouth guards doesn't understand sufficiently. In this study, I compared custom-made mouth guards with those on the market with respect to the occlusal condition and gravity fluctuation.The subjects were 20 adults who had never used a mouth guard in some kind of sports. They wore the commercial mouth guard and the custom-made one, each for 3 months; and the changes in occlusal condition and gravity fluctuation just after the start of wearing the mouth guard, after 1 month, and after 3 months were measured. The mouth guard on the market was of the mouth-formed type, and the custom-made one was made by the seat pressure method and had a thickness of 3mm in the part covering the front teeth.As the results, no change in total biting force or contact area was recognized with either guard. With the commercial mouth guard, the distance of gravity fluctuations after use for 1 month was lower than that found just after the start of wearing the guard. In the case of the custom-made mouth guard, the distance of gravity fluctuations after use for 1 month was lower than just after wearing of mouth guard, and a significant difference was recognized.