アブストラクト（26巻1号：神奈川歯学）

神奈川歯学

Japanese

Title　： インパクト・ハンマによる口腔軟組織の粘性試験法の試み
Subtitle　： 原著
Authors　： 関口淳平, 熊澤裕子, 本間和人, 豊田實, 松尾悦郎
Authors（kana）　：
Organization　： 神奈川歯科大学歯科補綴学教室第一講座
Journal　： 神奈川歯学
Volume　： 26
Number　： 1
Page　： 55-61
Year/Month　： 1991 / 6
Article　： 原著
Publisher　： 神奈川歯科大学学会
Abstract　： 「緒言」 診療計画の立案にあたり, 診断時に支台歯の健康度は勿論の事口腔粘膜の性状, 特に粘弾性を把握することは粘膜支持型の義歯においてきわめて重要なことである. 歯の喪失により惹起される欠損部を修復し, 形態と機能の再構成を主な目的とする歯科補綴学では, 支台歯のほか床下軟組織各部の客観的な性状解析を目的とした様々な方法が従来から試まれている. 支台歯に対しては平川, 青木, 本間らはインパクト・ハンマ法を用いて人工歯根膜を付与した人工歯や健全天然歯の打診を行い, その剛性を求めて歯の動揺度測定を把握する試み, 口腔粘膜に対しては, 現在までに田中, 佐藤, 岸そしてKorberらによるストレンゲージ法や, 榎本による生理学的見地からの機械インピーダンス測定法など様々な方法で性状把握が試まれているが, これらの方法は臨床応用に当たっては, 大がかりな装置, 加振器の固定法の困難性などの問題がある.
Practice　： 歯科学
Keywords　： インパクト・ハンマ, 粘性, 損失係数

English

Title　： Employing the Impact Hammer Method in a Viscosity Experiment in the Oral Soft Tissue
Subtitle　：
Authors　： Junpei SEKIGUCHI, Yuko KUMAZAWA, Kazuto HONMA, Minoru TOYODA, Etsuro MATSUO
Authors（kana）　：
Organization　： The 1st Department of Prosthetic Dentistry, Kanagawa Dental College
Journal　： Kanagawa Shigaku
Volume　： 26
Number　： 1
Page　： 55-61
Year/Month　： 1991 / 6
Article　： Original article
Publisher　： Kanagawa Odontological Society
Abstract　： [Abstract] The authors directed their attention to the viscous properties of the viscoelastic properties possessed by the oral tissue. In the present experiment, dental-use rubber base impression material, a viscoelastic body similar to the oral soft tissue, was used as the experimental material. The authors then compared the results of a viscosity experiment using the frequency analysis method, already known from its use in viscosity experiments, with the results using the impact hammer method and examined their relative effectiveness. As experimental materials, use was made of five types of dental-use rubber base impression material: Exaflex injection type, regular type, patty type, Surflex injection type and regular type. First of all, for the experiment with the frequency analysis method, the test materials were secured to an impedance head and vibration was applied. There was analysis of the force signal and the acceleration signal to derive the loss coefficient (viscosity) from the resonance peak and central frequency of the transfer function. Next, a viscosity measuring apparatus with the same principles as an impact hammer was used to impact the test materials against a force transducer. The force signal then underwent analysis of time domain wave forms to obtain the loss coefficient from the wave forms. The following results were obtained: (1) There was no difference in the loss coefficient due to changes in the size of the vibrational force. (2) Among the test materials used in the present experiment, Surflex clearly had a larger loss coefficient (viscosity) than Exaflex. (3) The experiment showed the possibility of measuring viscosity in the oral cavity with the impact hammer method.
Practice　： Dentistry
Keywords　：