People sometimes confuse canker sores and cold sores, but they are completely unrelated. Both can be painful, but knowing the differences can help you keep them in check.
A canker sore is typically one that occurs on the delicate tissues inside your mouth. It is usually light-colored at its base and can have a red exterior border.
A cold sore or fever blister, on the other hand, usually occurs on the outside of the mouth, usually on or near the nose or lips. A cold sore is contagious because it is caused by the herpes simplex virus, and it is usually painful and filled with fluid.
Studies reveal that lasers can quickly and easily treat ulcers (canker sores) and lesions (cold sores). Relief from the associated discomfort is both immediate and profound. Dental lasers stimulate healing and do not require any anesthetic to numb the area. The laser energy destroys the herpes virus, preventing the progression of the cold sore and if treated when the first tingling of the lip is noticed, can even prevent it from developing. Laser therapy is both inexpensive and quick, usually taking less than 15 minutes.