Cancer treatments also can affect oral health. If possible, see your dentist before beginning treatment. He or she can ensure that your mouth is healthy and, if necessary, can prescribe treatments to help you maintain good oral health. Your dentist also is interested in the medications you are taking because many can affect your dental treatments. Your dentist may want to speak with your physician when planning your treatment. Rare but serious jaw problems also can occur in people who’ve received bone strengthening drugs to treat cancer and, to a lesser extent, osteoporosis.