1) You should brush twice a day but gently. 2) Rinse mouth every-time whenever you eat something. 3) Try to figure if your cheek is coming between your posterior teeth(pichy wale daant) while eating & try to avoid it. 5) Avoid hot, spicy, and hard things while eating . 5) Most importantly if you use Tobacco (i.e. whether smoked form or smokeless tobacco ) stop it. 6) And if you consume alcohol stop it only if there is pain or burning sensation on that spot.