The patient should be asked to remove all distractions before a shade match is attempted.

Lipstick

in particular should be removed

clean

unstained

The teeth need to be _ and _ before an attempt is made to match a shade.

rubber cup

paste prophylaxis

A quick _ and_ is performed in the area of the mouth where the shade is to be matched

rinsed

prophylaxis paste

The area is _ thoroughly to remove any traces of the _.