Although using braces improves your oral health, appearance, and comfort, they can also cause temporary mouth ulcers at some point in time. Mouth ulcers appear on the lips or inner cheeks as a result of constant friction between the affected parts of your mouth and metal brackets. Fortunately, there are various ways to resolve this particular issue. Below is a comprehensive look at what you should do if you happen to get mouth ulcers during treatment. Included is how to stop the pain, prevent the development of mouth ulcers, and avoid infection.