The laser is being used in a very advanced way in the field of medicine. Dentistry is also one of the branches where the laser is being used significantly for treatments like tooth infections, gum problems, root canal treatments and oral surgery. Tooth whitening also uses advanced forms of laser, and the process is called laser whitening. Lasers are precise, without any residue and they are relatively safe to use. In laser teeth whitening the dentists first, identifies the type of shades to be used. Then the bleaching agent is streamed as layers on top of the teeth. The dentist then uses a high precision laser for the chemicals in the bleach to react. This causes the whitening process to set in. Few temporary bridges are put in the gums to elongate the mouth for the laser. After the treatment, the patient may feel a slight tingling sensation or sensitivity. This too dissolves over a few days. Proper care of the teeth will result in the whitening to be maintained over a period of many years. Certain types of foods should be avoided like drinks that have caffeine in it and smoking, and tobacco products should be prevented at all cost. The dentist would be in the best position to give a customized treatment using laser individually.