Essential oil by water distillation from the buds of the clove.Clove oil is added to many dental products like mouthwash and toothpaste due to its strong germicidal properties and the presence of the compound eugenol.it helps you fight dental pain,mouth ulcers,toothacheand sore gums.A drop of clove oil applied with cotton relieve toothache.Two drops of clove oil mixed with tooth poweder or tooth paste and brush the teeth twice a week .relieve tooth ache and bad breath and also remove the stains from teeth.