Lasers deliver energy in the form of light. Depending on the intended result, this energy travels at different wavelengths and is absorbed by a "target." In dentistry, these targets can be enamel, decay, gum tissue, or whitening enhancers. Each one absorbs a different wavelength of light while reflecting other wavelengths. No measurable effect is seen beyond the intended target site. Lasers are very specific in regard to the wavelength produced. This means that there must be a different laser for each type of procedure you want to complete. There is little or no sound associated with laser treatment, a pleasant treat for the dental patient who has experienced the whine of the dental drill.  

Hard Tissue:
Cavity removal can be accomplished with two currently available (and FDA approved) laser machines. Both have the ability to remove decay within a tooth, and prepare the surrounding enamel for bonded fillings. The need for anesthesia is greatly reduced or eliminated over the traditional methods. Laser energy dramatically reduces the bacteria found in dental decay, and has been demonstrated to enhance the tooth's ability to "heal" in situations where "deep cavities" had existed. There are, however, several limitations to laser decay removal including the inability to adequately remove silver fillings, onlays, and crowns.