The cavity detector is a
fluid which accurately and clearly colors cavity-infected tooth
material.
The picture shows the chemical solution (in the blue container) along
with a disposable applicator brush. The cavity detector assists the
dentist in finding out how much of the tooth to remove. The aim is
always to remove as little of the healthy tooth material as possible,
but the cavity itself must always be completely removed, or else the
problems will re-appear.
The patient's old fillings have been removed, and the cavity detector is
now used to check whether there is still a cavity. The solution is
applied to the tooth using the brush and left for a short time. Wherever
colored areas remain after rinsing with water, there is still a cavity
to be removed. Only then can a new filling be put in.