THE DEVELOPMENT OF AN INSTRUMENT OF MEASURE PERIODONTAL TISSUE WITH DAMPED OSCILLATION OF TEETH

牙齿阻尼振动测量牙周组织仪器的研制

• 批准号: 07557123
• 负责人: SAITO Tsuyoshi
• 金额: $ 12.16万
• 依托单位: NIHON UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07557123/
• 关键词: tooth mobility; periodontal charactaristic; damped natural frequency; elastic constant; viscous constant; damped oscillation system; 歯の打診; 歯周組織の変化; 減衰固有振動; 歯の動揺; 歯の共振; 歯の槌打

The measurment to tooth mobility has been recognized clinicaly as an important method to evaluate periodontal legament and other periodontal states. An objective attracted a lot of attention. In order to establish an objective evaluation method for periodontiume, including tooth mobility, this project study groupe has been developed an instrument "Damped Oscillation System" an studied dynamic parameter change (damped natural frequency, elastic constant, viscous constant and the ratio of elastic constant to viscous constant) by diff-erent conditon of Damped Oscillation including the position of sennsor, the size, shape and number of root model. And also, a comparative study with two commercial instrument, "perio-test" and "tooth mobility checker" were compleated, in advance to clinical use.Results are followed :1)In the case of moving the position of the detecing sensor horizontaly by hammer tappings from both horizontal and vertical directions, all values of the dynamic parameter decre … More ased as the distance between the detecting sensor and the tooth model increased.2)In the case of moving the position of the detecting sensor verticaly by horizontal tapping, the dynamic parameter increased as a distanse between the detecting sensor and the top of the tooth model increased, except the ratio of elastic constant to viscous constant. On the other hand, by vertical tapping, no significant change of all values of the dynamic parameter was recognized.3)When the distance between the roots was altered, an increase in distance between the roots lowered the dynamic parameter. The comparison between parallel and perpendicular percussion showed a large difference.4)When the location of the furcation area was altered, higher locations produced a lower dynamic parameter. There was no identifiable change regardless the ratio of elastic constant to viscous constant. There was also a significant difference between the result for paralleland perpendicular angle percussion.5)As compared two commercial instrument, "perio-test" and "tooth mobilitychecker" which were able to evaluate the mobility in quantitative manner, it was shown that newly developed device, damped oscillation system, was able to grasp the periodontium characteristics by introducing dynamic parameters. Less

牙松动度的测量已被临床公认为是评价牙周韧带及其他牙周状态的重要手段。一个目标吸引了很多人的注意力。为了建立一种包括牙齿松动度在内的牙周病的客观评价方法，本课题研究组研制了一种“阻尼振动系统”，并对动态参数的变化进行了研究（阻尼固有频率、弹性常数、粘滞常数和弹性常数与粘滞常数之比）进行了分析，根模型的形状和数量。结果表明：（1）在水平方向和垂直方向上，用锤击法移动检测传感器的位置，动态参数的各项值均下降，但在垂直方向上，动态参数的各项值均下降，而在水平方向上，动态参数的各项值均下降，但在垂直方向上，动态参数的各项值均下降，而在水平方向上，动态参数的各项值均下降，但在垂直方向上，动态参数的各项值均下降，而在水平方向上，动态参数的各项值均下降。 ...更多信息 2）在水平攻丝垂直移动检测传感器位置的情况下，除弹性常数与粘性常数之比外，动态参数随检测传感器与牙模顶部距离的增大而增大。而垂直割胶时，各动力学参数值变化不显著。3）改变根系间距时，根系间距的增大使动力学参数降低。平行叩击与垂直叩击的结果有较大差异。4）当分叉区位置改变时，位置越高，动力学参数越低。无论弹性常数与粘性常数之比如何，都没有可识别的变化。5）通过比较能够定量评价牙周膜活动度的“perio-test”和“tooth mobilitychecker”两种商品化的牙周膜活动度测量仪，发现阻尼振动系统能够通过引入动态参数来掌握牙周膜的特性。少

项目成果

池田 仁崇: "歯の減衰固有振動を指標とした歯周組織評価に関する研究(3)" 日本歯科保存学雑誌. 41(2). (1998)

Hitoshi Ikeda：“以牙齿的阻尼自然振动为指标的牙周组织评估研究（3）”日本保守牙科杂志41（2）（1998）。

KEIJI MAEDA: "Evaluation of Periodontal Tissue with Damped Oscillation of Teeth-The Effects of Root Taper and the Thickness of Schock-Absorbing Material in a Tooth Model" Japan.J.Conserv.Dent.38(2). 440-452 (1995)

KEIJI MAEDA：“用牙齿阻尼振动评估牙周组织 - 牙齿模型中牙根锥度和减震材料厚度的影响”Japan.J.Conserv.Dent.38(2)。

池田 仁崇 他: "歯の減衰振動を指標とした歯周組織評価に関する研究(比較研究)" 日本歯科保存学雑誌. 39・春季. 48 (1996)

Hitoshi Ikeda 等人：“以牙齿阻尼振动为指标的牙周组织评估研究（比较研究）”日本保守牙科杂志 39，春季 48（1996 年）。

池田 仁崇: "歯の減衰振動を指標とした歯周組織評価に関する研究(複根模型)" 日本歯科保存学雑誌. 41・2(印刷中). (1998)

池田仁：“以牙齿阻尼振动为指标的牙周组织评价研究（多根模型）”日本保守牙科杂志41・2（出版中）。

紙本 篤: "歯の減衰振動を指標とした歯周組織評価に関する研究(検出センサーの固定位置)" 日本歯科保存学会誌. 39・2. 425-437 (1996)

Atsushi Kamimoto：“以牙齿阻尼振动为指标的牙周组织评估研究（检测传感器的固定位置）”日本保守牙科学会杂志39・2（1996）。