E Cigs & Oral Health: How Vaping Affects Gums & Teeth Electronic cigarettes (e cigarettes) are sometimes called e cigs, vapes, vape pens, and electronic nicotine delivery systems (ENDS). E cigarettes come in many shapes and sizes. Most e cigarettes contain nicotine. Get the facts about e cigarettes, Is Vaping Better Than Smoking? American Heart Association Tar and nicotine content of e cigarettes and conventional cigarettes Download Table E cigarettes: Facts, stats and regulations