Iodoglycerin needs to be placed into the gum sulcus, which is the gap between the gums and the teeth. By looking in the mirror, the patient can dip a relatively sharp object into the iodoglycerin and apply it to the gum sulcus. Because iodoglycerin is irritating to other mucous membranes in the mouth, it should never come in contact with other mucous membranes while dropping. If the patient does not have the means to do it himself, he can go to the dentist to have the medicine applied. Iodoglycerin is not recommended for prolonged use and is applied to the gum sulcus after a full mouth cleaning. Some patients who have periodontal abscesses can also use iodine glycerin. Because iodine glycerin contains iodine, the dosage should not be too large each time to avoid iodine poisoning.