アブストラクト（16巻4号：神奈川歯学）

神奈川歯学

Japanese

Title　： 骨振動特性におよぼす軟組織の影響について
Subtitle　： 原著
Authors　： 松尾悦郎, 金安英治, 日笠不二夫, 浜田静樹, 宇治文孝, 小笠原嘉一
Authors（kana）　：
Organization　： 神奈川歯科大学補綴学教室第一講座
Journal　： 神奈川歯学
Volume　： 16
Number　： 4
Page　： 559-570
Year/Month　： 1982 / 3
Article　： 原著
Publisher　： 神奈川歯科大学学会
Abstract　： 「緒言」 顔面頭蓋および脳頭蓋に対する振動学的研究は, Bekesyを始めとし, Franke, Corliss, 石岡, 豊田, 小田切, 日笠など比較的多く発表がなされている. これらの研究の中で, イヌ犬歯に強制加振を加え歯周組織の衝撃減衰能力をリニヤ値で求めた豊田の研究や, 周波数分析値で求めた日笠の研究で軟組織が何らの形で関与することがわかった. 今回われわれはこの問題と関節の振動特性を解決するために, 比較的構造の簡単な被検体を利用して, 以下のような実験をおこない, 多少の知見を得たので報告する. 「実験装置と方法」 1. 実験装置 実験に使用した装置は当教室の豊田が用いた, ランダムノイズ加振による1/3 Octave Band Pass Filter分析によった. そして, 各測定点において1/3 Octave Bandで分析された結果を1 Octave中心周波にdB合成を行ない減衰量とした. 図1は実験装置のブロックダイヤグラムで被検個体支持装置, 加振信号系, および振動分析の3部分から構成されている.
Practice　： 歯科学
Keywords　：

English

Title　： A Study on the Influence of the Soft Tissue on the Vibratory Characteristics of the Bone
Subtitle　： Original article
Authors　： Etsuro MATSUO, Eiji KANAYASU, Fujio HIGASA, Shizuki HAMADA, Fumitaka UJI, Kaichi OGASAWARA
Authors（kana）　：
Organization　： 1st Department of Prosthetic Dentistry, Kanagawa Dental College
Journal　： Kanagawa Shigaku
Volume　： 16
Number　： 4
Page　： 559-570
Year/Month　： 1982 / 3
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： Abstract : In recent years there have been quite a few studies in the dental field which treat force exerted on the teeth as vibratory shock in making a vibratory science study on the ossa faciei and the ossa cranii. Studies have been made in the past at this research unit on the attenuation potential of the shock transmitted to the periodontal tissue when enforced vibration is applied to the canine teeth of dogs as well as analysis of wave frequency values. Through such research it was realized that the presence of the soft tissue influences in some way the vibratory transfer characteristics of the periodontal tissue. In this present study the objective was taking a further step toward clarifying this question as well as making clear the vibratory characteristics of the mandibular joints and the following experiment was performed. For laboratory specimens the severed legs of freshly-killed chickens were used with the hip joints intact, some where the skin and soft tissue were retained and some where the articulation was retained but the skin and soft tissue had been removed as much as possible. Using random-noise as the source of vibration the vibration received was measured with an accelerometer pick up making use of 1/3 octave band pass filter analysis. Measured were : 1) weight difference among the bones, 2) weight difference among the soft tissues, 3) vibratory characteristics of the soft tissues, 4) changes appearing from bone severance, and 5) vibratory characteristics of the bone and joints using five separate measurement methods. Results were as follows : Result : 1) It was determined that the sympathetic vibration peak for the bones lay in the 63 Hz - 2 KHz bandwidth. 2) The vibratory attenuation potential for the soft tissue was extremely high in the frequency ranges above 500 Hz. 3) It was thought that when the length on the soft tissue from the vibratory point was doubled then there would be a 40 dB to 30 dB rate of attenuation in the 31.5 Hz - 250 Hz bandwidth.
Practice　： Dentistry
Keywords　：