Initially, when the orthodontist places your braces, there may be some sores on your lips. If you rinse the sores in warm salt water, the sores will heal within a week or two. Thereafter, there will be an occasional sore when, for example if you get into a fight. However, the sores should heal rather quickly. If your lips get too sore during the first week, you can put wax on the braces to prevent the braces from rubbing and irritating the sore.