The Bad effects caused by Cigarette on oral health are Tooth discoloration , Bad breath ,Dental caries, Gum Disease ,Tooth loss ,Oral cancer and lung cancer. Study has proved 90 percent of oral cancer patients are smokers. Avoid smoking you will be free from mouth cancer!
http://www.ndnewsexpress.com/2011/01/31/cigarette-smoking-is-injurious-to-health-6467
http://www.ndnewsexpress.com/2011/01/31/cigarette-smoking-is-injurious-to-health-6467