Hello, first thing is if you seriously want your teeth to look clean then stop smoking otherwise neither polishinh nor cleaning or whitening will help. they are different procedures. whitening is like bleaching it will make your teeth look brighter. on the other hand polishing is done after cleaning in order to get a polished smooth shining suface.

Hello Polishing is done in cleaning procedure that is called Scaling. And whitening of teeth is also called bleaching. So Scaling is for cleaning teeth, cleaning surface of teeth and gums to make them healthy. Bleaching is a chemical procedure that whiten your teeth those are stained or discolored from beginning or due to poor oral hygiene or internal stains. Wish you good health and happiness Keep me updated with the improvements Regards