Common Oral Care Occurrences for TEENS. Bad breath causes – bad breath, or halitosis, usually comes from bacteria that form on the tongue. Whitening options – whitening those pearly whites can be done with whitening toothpastes, mouth rinses and toothbrushes. Some people are unhappy with how their teeth look and feel self-conscious smiling in photos or in social situations. But you can have treatment to correct any.