If the cavity is still very small, the best form of treatment would be getting a pit and fissure sealant applied by a dentist. This would require no drilling unless the cavity is large and in that case proper restorative procedures are carried out.
Mildew is a form of fungus. It is distinguished from its closely-related counterpart, mold, largely by its color: molds appear in shades of black, blue, red, and green, whereas mildew is white.orticulturalists classify mildew differently than most other people. In horticulture, mildew is either species of fungus in the order Erysiphales, or fungus-like organisms in the family Peronosporaceae. It is also used more generally to mean mold growth.
What is Mold? Molds (and mildew) are fungi. Fungi are neither plant nor animal but, since 1969, have their own kingdom. The fungi kingdom includes such wonderful organisms as the delicious edible mushrooms, the makers of the miracle drug penicillin and the yeast that makes our bread rise and our fine wines ferment.