Some Observations on the Effects Produced by a Nd:YAG Laser on Human Dental Enamel: A Scanning Electron Microscopy Study
The enamel surface layer of human teeth was treated with a Q-switched Nd:YAG laser with 8 mJ energy per pulse. Previously, the samples were etched, weakly, with acid in order to decrease their refletion. Treated and control samples were widely studied by scanning electron microscopy and, in the first ones, it was observed significant morphologic changes affecting the enamel surface. Those changes, principally, reveal the loss of the typical surface structure of the etched enamel. Further studies applaing knoop hardness measurements on cross-sections of the enamel samples confirm an increase of the demineralization resistance.
Unable to display preview. Download preview PDF.
- 1.Nawasawa A. Nd:YAG laser therapy in dental and oral surgery. In Joffe SN, Oguro Y (eds): “Avances in Nd:YAG Laser Surgery”. New York: Springer-Verlag, 1987; pp 235–246.Google Scholar
- 3.Stern RH, Sognnaes RF. Laser beam effect on dental hard tissue. J Dent Res 1964; 43: 873–876.Google Scholar
- 5.Stern RH, Sognnaes RF, Goodman F. Laser effect on in vitro enamel permeability and solubility. J Am Dent Assoc 1966; 73: 838–843.Google Scholar
- 6.Sognnaes RF, Stern RH. Laser effect on resistance of human dental enamel to demineralization in vitro. J So Calif Dent Assoc 1965; 33: 328–329.Google Scholar
- 7.Bohem R, Baechler T, Webter J, Jauke S. Laser processes in preventive dentistry. Optical Enginiering 1977; 16: 493–496.Google Scholar
- 10.Yamamoto H, Kayano T. Prevention of dental caries and treatment of early caries using the Nd:YAG laser. In Joffe SN, Oguro Y (eds): “Advances in Nd:YAG laser surgery”. New York: Springer-Verlag, 1987; pp 227–234.Google Scholar