Nd: yag & Er:yag Lasers in Prevention and Conditioning of Enamel by Nabiha Hussain

AbstractThe Food and Drug Administration (FDA) has approved of a variety of hard and soft tissue lasers for use in the dental treatment of adults and children. Because dental lasers boast unique absorption characteristics, they are used to perform specific dental procedures and improve its characteristics by using some of lasers in prevention and conditioning of enamel as Nd:yag and Er:yag lasers. Lasers have been tested to improve enamel properties in order to enhance its resistance to demineralization. Since the 1960s, when associated with fluoride by special wavelengths of some lasers. This study evaluated the influence of both Er: YAG and Nd: YAG laser irradiation on deciduous enamel demineralization. The Nd: YAG laser wavelength of 1064nm exhibits strong thermal effect in soft dental tissue because of its appropriate absorption characteristics, is also efficient in the increase of the enamel resistance and play an important role in the prevention of dental caries by forming enamel granules of variable sizes. Er:YAG. Its emitted wavelength of 2940nm matches exactly the maximal absorption in water which play main role in conditioning of Hydroxyapatite nanorods of enamel