Detection and Research on Dental Pulp Fluorescence Signal

The technology of laser induced fluorescence was used to detect the state of dental pulp vitality. The detection device of dental pulp vitality was designed base on the principle that the teeth can be excited the fluorescence in the short wavelength light-source irradiation, and the fluorescence intension has close related with the dental pulp vitality. In this paper, the principle of detection fluorescence was introduced, the transfer fiber was designed, photomultiplier was put forward to gather the reflection fluorescence from the teeth, and the circuit of detection and gather were designed, the influence factor were analyzed; the SCM was used to design the gather system of fluorescence signal, according to the communication principle of SCM and computer, the data of dental fluorescence signal can be processed and displayed in the computer. Through the primary experimentation, the results show that the ill healthy tooth can be distinguished obviously from the healthy tooth.