The yellowish of teeth is caused by either
1. calculus ,Food stains due to improper maintenance of oral cavity or
2.flourosis stains.
there will not be any problem with either scaling or whitening of ur teeth , annually once .
price ranges will be from 6k to 15k depending upon the yellowishness of the teeth and the sittings to be done
Next Steps
visit dentist to know exact diagnosis of teeth clinically