アブストラクト(19巻2号:神奈川歯学)

神奈川歯学

Japanese

Title : 骨の構造差と振動特性に関する研究
Subtitle : 原著
Authors : 松尾悦郎, 浜田静樹, 澤田教彰, 米谷明, 金安英治
Authors(kana) :
Organization : 神奈川歯科大学補綴学教室第1講座
Journal : 神奈川歯学
Volume : 19
Number : 2
Page : 95-104
Year/Month : 1984 / 9
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」現代歯科医学において, ME機器による種々な診断法が開発されてきており, 咬合音による診断もその一法である. 咬合音による診断では咬合音伝達の媒体である歯および頭部の振動学的な解析が急務とされており, 我々は過去に顎顔面頭蓋の振動伝達特性, 振動刺激がラット歯槽骨の発育に及ぼす影響などの一連の研究を行ってきた. これらの研究を通して, 基礎的問題の1つとして, 骨表面と骨内部の伝達特性差を知る必要が生じてきた. 今回我々は牛大腿骨を用い緻密骨, 海綿骨および骨体の3者の周波数特性を求めるとともに, 牛大腿骨による振動伝達時間差を測定し, 併せて非接触型計測装置を用いpick upの影響についての実験を行い多少の知見を得たので報告する. 「実験試料, 装置および方法」1. 実験試料 実験試料は比較的大きな海綿骨を入手しやすい牛大腿骨を用いた. 周波数特性試験において緻密骨のみのもの, 海綿骨のみのもの, および緻密骨と海綿骨の一体となったもの (以下骨体) の3種を用意し, 長さ50mm, 幅15mm, 厚さ5mmに整形して試料とした.
Practice : 歯科学
Keywords :

English

Title : A Study on Differences in Bone Structure and Vibratory Characteristics
Subtitle :
Authors : Etsuro MATSUO, Shizuki HAMADA, Noriaki SAWADA, Akira YONETANI, Eiji KANAYASU
Authors(kana) :
Organization : 1st Department of Prosthetic Dentistry, Kanagawa Dental college
Journal : Kanagawa Shigaku
Volume : 19
Number : 2
Page : 95-104
Year/Month : 1984 / 9
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : Many dental examination methods have been developed in modern dental medicine which make use of the ME instrument. These include examinations making use of occlusal sound. In such examinations the most important matter is an oscillatory analysis of vibration in the teeth and head which are the media for transfer of occlusal sounnd. We have already conducted a number of studies at this research unit to examine these properties. A cow's femur was used to measure characteristics of sound frequency and to record vibration transfer time differences in the compact bone, spongiosa and femur in its entirety. Along with this, a noncontacting measuring instrument was employed to examine the effects of the pick-up on experimental results. The following findings were obtained. 1. Resonance frequency was recorded in the 250 Hz band at all experimental sites. In addition, other resonance frequency were recorded in the respective experimental sites in the following frequency bands : Compact bone: 8KHz Spongiosa: 2KHz Femur: 4KHz 2. With the measuring method using the acceleration pick-up, the weight-ratio between test piece and pick-up was 6.5 : 1. As compared with using noncontacting measuring instrument, there was some decrease in resonance frequency in the high-frequency bands as well as a very slight decrease in frequency level. 3. Rate of sound transfer in the compact bone was 2070 m/s which is approximately Mach 5.8, the highest speed among the areas experimented on.
Practice : Dentistry
Keywords :