For any disease related to teeth like pyorrhea, plaque, gumboil, deterioration of tooth bone, tooth decay, having yellowish teeth, stained teeth or having loose teeth. Early in the morning take one glass of water and recite 9 time
وَالْجُرُوْحُ
Blow upon a glass of water and rinse your mouth saving one draught of water. Drink this draught of water after rinsing the mouth thoroughly with the water from the glass. For half an hour after this nothing should be taken.