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.
Mildew can be described as a specific type of mold. Mold is a fungus that contains multiple identical nuclei and grows in the form of filaments or hyphae which penetrate beneath the surface of the affected material. Mildew, on the other hand, has flat growth that remains on the surface.