Yes, for the PC bedwetters with the lace on their panties artists' Titanium White pigment would work just as well as a tooth contact indicator- - - -just don't try to lubricate a lathe center with it. If smoking 2-3 packs of Winstons a day for 40 years and crashing various race cars and dirt bikes hasn't put me underground, I doubt if being exposed to a few grams of lead compounds is going to make much difference. If it does, then it was my choice to expose myself to the mythical hazards. The people who are dedicated to minding my business instead of their own can take an airborne fornication at a rotationally-motivated piece of pastry!
Jerry