During the first week of treatment, you may notice sores or ulcerations inside your mouth. This can happen because your lips and cheeks are not yet used to rubbing against your orthodontic braces. Over time, your skin on the inside of your mouth will get tougher and you will not have sores anymore. To provide some relief for your lips and cheeks rubbing against your rough braces, you can place a small pea-sized amount of wax or bubble gum on the area of the braces that is causing the sore or ulceration. The sore should improve within a couple of days and completely heal within a week. If the sore or ulceration does not improve or gets worse, call us to have it examined.