You may need a crown if you
  • have worn fillings
  • cracked a tooth
  • have a failing crown
  • have a large cavity
  • after root canal treatment

A crown will strengthen and protect a tooth whereas a filling doesn't. You have a choice of materials when you have a crown:
  • Porcelain (white) crowns, available privately with great cosmetics
  • Gold for maximum strength (usually for back teeth)

Your dentist will discuss the options in your case.