Quote (boxboxbox @ Jul 22 2016 08:41am)
whenever they are dirty, and only with water so I don't wear off my enamels.
brushing itself can harm enamel, but overall you just want a toothpaste that isn't whitening. I'd suggest something meant for sensitivity, as sensitivity is caused by a cavity where the enamel has eroded away entirely. They are designed to not cause more harm in these areas and can actually help keep enamel strong.