Does it really matter what toothpaste you use? - Every toothpaste seem to claim something different and seem superior - avoid cavities, 'strengthen' bones, make them white, etc etc Ads are really attractive and the variety available is really wide. Does it really matter which one you use - are some superior in any way. I agree that taste and smell vary a lot, but do the ones that say they strengthen teeth, gums and prevent cavities really work and are they superior to regular toothpaste?