Hasegawa Y
Department of Maxillofacial Prosthetics, Life Science of Maxillofacial Systems, Tokyo Medical and Dental University.
Kokubyo Gakkai Zasshi. 1994 Jun;61(2):309-28. doi: 10.5357/koubyou.61.309.
Effect of 6 types of mouthguards on the vibratory characteristics of the human dry mandible was investigated by means of modal analysis with the impact test method. In this study, 20 test points were established on the mandible and the modal shape and damping ratio of the vibration of the mandible itself and the mandible each attached with a mouthguard were analyzed by using the FFT analyzer (CF-6400) and personal computer (PC-9801FA) with a modal analyzing software (VIBRANT-PC). The results were as follows: 1. With regard to the modal shape, there was almost no difference among the mandibles and each mandible with 6 types of mouthguard. 2. With regard to the damping ratio, there was a significant difference between the mandible itself and mandible with each mouthguard. And the effect of the mandible with each mouthguard on the damping ratio was different.
通过冲击试验法进行模态分析，研究了6种护齿器对人体干燥下颌骨振动特性的影响。在本研究中，在下颌骨上设置了20个测试点，并使用FFT分析仪（CF - 6400）和配备模态分析软件（VIBRANT - PC）的个人计算机（PC - 9801FA），分析了下颌骨本身以及每个附着有护齿器的下颌骨的模态形状和振动阻尼比。结果如下：1. 关于模态形状，下颌骨本身以及带有6种护齿器的每个下颌骨之间几乎没有差异。2. 关于阻尼比，下颌骨本身与每个带有护齿器的下颌骨之间存在显著差异。并且每个护齿器对下颌骨阻尼比的影响各不相同。
