Hi Sir....
Yellowish discolouration may due to soft and hard deposits (plaque and stains),dental fluorosis, soft drink stains
You need to go for scaling (teeth cleaning)followed by tooth bleaching(TEETH WHITENING)procedure for immediate results
TEETH CLEANING (scaling)starts from 800/-
TEETH WHITENING starts from 5000/-
Next Steps
kindly visit dentist for futhur management
Health Tips
Do scaling for every 6months