Hi,
Color of the teeth are determined by various factors
Consumption of chromatogenic foods like tea , coffee, turmeric
And there are 2 types of stains
1. On the surface of the teeth
2. Intrinsic stains( from inside the teeth)
1st type of stain can easily be removed by a simple scaling ( cleaning ) procedure followed by polishing
Next Steps
you can visit any dentist and request a full mouth cleaning / scaling and polishing
it is a 15-20 mins painless procedure and gives amazing results
i hope this was helpful to you
regards,
Dr. Prachi Lalji