I have a friend that has very yellow teeth. The thing is she wants to go out and buy dental strips to whiten her teeth with but I told her she should see a dentist for a basic cleaning first. My thinking is she has not been in a while and I know she must have tartar build up.
Will whitening her teeth with strips leave spots if the tartar is not removed first. That is want I told her but really not sure. I just think she needs to get to a dentist but I would like to know if I am right or not.