Worried about the extra gum portion that is exposed when you smile, thus making your smile rather 'gummy' in its appearance! If you have a problem with extended gums and teeth that look too short then by undergoing gum re-contouring one can get rid of this problem. Yes cosmetic dentistry has discovered gum shaping, otherwise termed as gum re-contouring as a workable remedy for 'gummy smile'. Dentist trim out the excess gum that is hiding your teeth thus bring out the right amount of teeth exposure when you smile.