Dr. Allison O'Brien takes the upmost care of her patients in all aspects of dentistry and the Waterlase laser is nothing less. This laser works on hard and soft tissue with precision and comfort. The Waterlase laser combines water, air, and laser energy for safe use on human tissue in the mouth. Our teeth are partially made up of water and when this laser makes contact with the tooth it excites the water molecules to cut through the tooth. Since the laser continuously sprays out water it keeps the tooth hydrated, preventing heat and giving you a virtually pain free experience!