<prompt> The laser useful in smear layer removal isEr:Cr:YSGGEr:YAGNe:YAGArgon Laser  <response>: Erbium: Chromium: Yttrium Scandium Gallium Garnet Laser Er:Cr:YSGGEtches enamel surface.Removal smear layer. Erbium: Yttrium Aluminium Garnet Laser Er:YAGRemove caries in enamel and dentin.Removes dislodged GIC and Composite. Desensitize the hypersensitivity dentin. Neodymium - Yttrium Aluminum Garnet Laser Ne: YAG Good hemostasis.Used in non-surgical sulcular debridement. Argon Laser Yield high intensity visible blue light. Curing of dental restorations.It also changes the surface chemistry of both enamel and root surfaces dentin, which reduces the probability of recurrent caries. Removes extrinsic and intrinsic stains.Bleaching of teeth. 