The reason you feel hurt when you use teeth whitening strips maybe because you have sensitive teeth. In other words, the chemical overact in your gum and that's the reason why you feel hurt!
Should be okay.
Before, of course. Brushing your teeth removes build up of food, plaque and other nasty things. So do you want to whiten your teeth, or the nasty gunk on top? Also, if you brush your teeth afterward, it might not let all the chemicals do their complete job.
Well, it won't hurt them. I'd not recommend it instead of Crest or something, but it certainly won't hurt them.
yes but not hurt your teeth
your teeth might hurt because u have some new ones wanting to come out
no sharks do not hurt themselves with their own teeth because they don't close their mouth fully and the teeth do not touch them
The sugar in the candy can rott your teeth
Yes, baby teeth can hurt, and most of the time will hurt. The reason they hurt is because you are exposing tender gums and you are ripping roots out of the gums.
Teeth aren't bones but it would probably hurt if you broke a tooth
You will have to get braces if your teeth are twisted but you don't have to get them until your 20,30 or 40 years old and your teeth can untwist if you lose all your baby teeth I think.
Who chews staples? Of course they hurt you.
*