Pulp Vitality Test
Laser Doppler is considered more reliable than sensory testing for pulp vitality testing. This is because there can be adequate vascularisation to support tooth pulp vitality even when sensation is lost due to nerve damage. Blood flow is assessed by placing laser Doppler probes in contact with the teeth, typically using a dental putty splint to support the probe.
The graph below illustrates a simultaneous comparison of blood flow in Vital and Non Vital teeth. Further confirmation can be obtained by using FFT analyses of the blood flow recording to investigate the presence or absence of the cardiac pulse.
We typically recommend moorVMS-LDF (single channel, or dual for direct tooth comparisons), together with VP3 needle probes for front tooth assessment and VP5 for rear teeth. Our moorVMS-PC software features FFT and wavelet analyses to assess the strength of the pulsatile component of the flow signals.
moorVMS-LDF - 先进的激光多普勒血流和温度监测
moorVMS-PC - Advanced aquisition and analyses functions to collect signals and automate control protocol modules
VP3 - Blunt needle end delivery probe
VP5 - Blunt needle 90 degree end delivery probe
Contact us to discuss your specific needs and to request your copy of our free Application Note which includes a detailed experimental method and practical suggestions. We also offer no obligation on-site visits so you can test the equipment in your facility.