In addition to regular teeth hygiene & dentist visits, avoid smoking and foods that stain teeth. Several foods are considered to whiten teeth although it takes time and the effect may be subtle. These foods include:
Foods to avoid include any that darken the teeth during consumption and any with food colouring including soct drinks, coffee, tea, red wine and licorice. If these foods are unavoidable, simply brush your teeth after eating.
Do not smoke also as this is one of the leading factors that cause stained teeth.