Sato T, Kohno S, Kobayashi H, Yoshida K, Karasuyama H, Tabata T
Nihon Hotetsu Shika Gakkai Zasshi. 1989 Oct;33(5):1202-11. doi: 10.2186/jjps.33.1202.
To investigate the principle of Periotest measurement, we compared PT-value and the duration of contact between the rod of the Periotest-Instrument and the tooth measured directly in an oral cavity. Then we applied this apparatus to the subjects with normal periodontium and the patients of prosthetic treatment. The conclusions are as follows: 1. We confirmed that PT-value was calculated from the duration of contact between the rod of the Periotest and the tooth and it showed mainly the dumping effect of the periodontium. 2. There was a close relationship between PT-value and the clinical degree of tooth mobility, especially in the degree of 0 and 1 of tooth mobility. 3. Periotest was very useful not only for the periodontal treatment but also prosthetic application.
为研究牙周探测仪（Periotest）测量的原理，我们比较了Periotest测量值（PT值）与Periotest仪器的杆与口腔内直接测量的牙齿之间的接触持续时间。然后我们将该仪器应用于牙周组织正常的受试者和接受修复治疗的患者。结论如下：1. 我们证实PT值是根据Periotest的杆与牙齿之间的接触持续时间计算得出的，它主要显示了牙周组织的缓冲作用。2. PT值与牙齿临床松动度之间存在密切关系，尤其是在牙齿松动度为0和1级时。3. Periotest不仅对牙周治疗有用，对修复应用也非常有用。
