We all know that smoking is hazardous to our health, but most of us don't know that it actually causes major damages to our mouth, teeth and gums, and most important oral cancer or cancer of the mouth. There are various oral conditions that can be caused by smoking such as mouth sores, gum disease and tooth decay. We have 9 tips for you on how you can help yourself to quit smoking. Ask you dentist for help. Most dentists will help you in your decision to stop smoking.