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，可能是由于健康意识的增强；他们也越来越意识到可能的运动损伤。尽管人们对口腔受伤的担忧低于对身体其他部位的担忧，但许多人在参加运动时都戴上了市售的护齿器，这是一种合适的护齿器。这些事情表明，定制护齿器的可用性并不充分。在这项研究中，我将定制的护齿器与市场上的护齿器在咬合状况和重力波动方面进行了比较。研究对象是20名从未在某种运动中使用过护齿器的成年人。他们分别佩戴商业口腔防护器和定制口腔防护器3个月；并测量刚开始戴牙套时、戴牙套1个月后、戴牙套3个月后咬合状况和重力波动的变化。市场上的护齿器为口形式，定制的护齿器采用座压法制作，覆盖门牙部分厚度为3mm。结果显示，两种护套的总咬合力和接触面积都没有变化。使用商业口腔护套后1个月的重力波动距离比刚开始佩戴护套时要小。在定制护齿组中，使用1个月后的重力波动距离比刚戴上护齿组后的重力波动距离要小，且有显著性差异。

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.