Hello lybrate-user, Eating pan masalas stains the teeth making them yellow or brown and also causes many other long-term problems in the mouth which might not be curable. You need to consult a dentist
and get cleaning and polishing done to make it healthy. To maintain this shine, you would need to stop eating pan masalas and take extra care of your oral hygiene. Brush with any fluoridated toothpaste twice a day, floss between the teeth and use a mouthwash. Make sure to keep the tongue clean as well. Visit a dentist every 6 months for regular checkup. Thank you.