To get the stains cleaned from your teeth, visit a dentist asap..The cleaning does not solely depend upon brushing twice it depends on various other factors..The toothbrush should be used with a proper brushing technique alongwith use of mouthwash and dental floss to remove the food particles stuck to your teeth..Get the scaling and polishing done from the dentist and keep follow up after some months to get the procedure if required..Foul smell will be reduced once proper cleaning is done.

Black and yellow deposits or stains on the teeth should be cleaned by scaling and polishing. The smell is also due to the calculus deposition which harbours bacteria which is very harmful. Visit a dentist do a proper prophylaxis and maintain your oral hygiene as advised by doctor

Visit dentist as early as possible