Is there a way to make teeth more white? if yes, is that safe for teeth? thankyou.

Yes, go white!: Most teeth can be made whiter using strips, trays, or in office procedures. Fillings and crowns will not change. There is no lasting bad effects of whitening.

Talk to your Dentist: The best whitening systems, the most cost effective over the long run, are those provided by your dentist as opposed to otc products. At your next check-up talk to your dentist about what can be done in your individual case.