Dynamic characterisation of teeth by laser vibrometry.

被引：6

作者：

Castellini, P ^{[1
]}

Miglietta, G ^{[1
]}

Revel, GM ^{[1
]}

Scalise, L ^{[1
]}

机构：

[1] Univ Ancona, Dipartimento Meccan, I-60131 Ancona, Italy

来源：

THIRD INTERNATIONAL CONFERENCE ON VIBRATION MEASUREMENTS BY LASER TECHNIQUES: ADVANCES AND APPLICATIONS | 1998年 / 3411卷

关键词：

laser vibrometry; dentistry; laser pulse excitation; frequency response; teeth;

D O I：

10.1117/12.307744

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The use of air compressed, high rotational velocity drill and of ultrasound devices in the dentist practise can cause pain for the patient and damage to the tooth structure. The authors, in this paper, have investigated the possible cause of these problems: the vibrations caused by the drill exciting the tooth. Particular attention has been dedicated to the frequency behaviour of teeth, in order to individuate their frequency resonances. A method for the investigation of human teeth dynamic response, in terms of natural frequencies and modal shapes has been proposed. Very short laser pulses have been used to excite teeth vibrations and a Scanning Laser Doppler vibrometer to measure the dynamic responses. An assessment of the amplitude of the characteristics of the excitation has been done using the theory of the impulse response function in such a way as to calculate the frequency response of the teeth. The results measured have been compared. Results permit to extract information extremely useful for the design of devices used in the dentist practise.

引用

页码：581 / 589

页数：9