Nailbiting or Thumbsucking will affect the shape of teeth, jaws or one's smile. Prolonged dummy use in toddlers is another example. Dr Andrew Chang and Dr Diane Tay discuss and outline for parents of kids and teens simple remedies they can use at home to help break these habits. They also chat about how Nailbiting, Thumbsucking or prolonged dummy use can affect teeth or jaw shape and one's smile.