Many patients request that we whiten their teeth, but sometimes tell us they've had an experience in the past of tooth sensitivity after the procedure. This can range from mild cold sensitivity to, in rare cases, more severe sensitivity. This sensitivity is almost always very transient and without consequence. I recommend to my patients that they use a desensitizing toothpaste such as Sensodyne(R) or Crest Sensitivity(R) for two weeks prior to whitening and for two weeks thereafter. This often reduces or eliminates tooth sensitivity.