Both weed and cigarettes. I know it makes em yellow, but does it affect them negatively in a physical way?
All I know is that I brush my teeth twice a day. No fuckin way I'm getting gnarly teeth from smoking,
Cannabis use and destructive periodontal diseases among adolescents (abst - 2009) Unbound MEDLINE | Cannabis use and destructive periodontal diseases among adolescents. PubMed Journal article abstract (It's short and easy to read)
yea it is pretty bad, my dentist claimed its almost impossible to have white teeth after years of smoking..I try to brush more than once a day