How does it detect decalcification?
Using the information above as the basis, the Midwest Caries I.D.™ unit works off of LED (light emitting diode) and Fiber Optic technology. The unit has 3 fibers (1st emits a green light, 2nd emits a red/infrared light and the 3rd is used by the unit to collect light feedback from the tooth). The LED light that is emitted from the Midwest Caries I.D.™ unit passes through the enamel rods. The photons from the light are going to be: Reflected, Refracted, Scattered or Absorbed. If the enamel is sound the light is absorbed into the tooth and no audible signal is given. If the enamel is demineralized, or decay is present the light will be reflected, refracted or scattered and a 3rd Fiber Optic will capture that, process it within the Caries I.D. unit and signal by extinguishing the green light and replacing it with a red light and audible signal indicating a change in the enamel structure.