Effects of Nd:YAG laser on enamel microhardness and dental plaque composition: an in situ study

Photomedicine and Laser Surgery
Daniel KorytnickiRosa Helena Miranda Grande

Abstract

This study evaluated Knoop microhardness (KHN) and dental plaque composition of human enamel irradiated with Nd:YAG laser and subjected to in situ cariogenic challenge. Although in vitro studies have shown that Nd:YAG laser irradiation results in a reduction of enamel mineral loss after acid challenge, this hypothesis has not been tested using an in situ caries model. Acrylic devices containing lased and non-lased human enamel slabs were used for 28 days by eight subjects highly colonized by S. mutans. Devices were immersed in a sucrose solution (20%) eight times daily in order to better simulate the cariogenic challenge. After the experimental period, no differences in dental plaque composition were observed between lased and non-lased enamel slabs indicating that all slabs were exposed to equivalent cariogenic challenges. Cross sections of enamel slabs were then measured for Knoop microhardness at 10, 20, 40, 60, 80, 120, and 180 microm in depth from the outer exposed surface. Un-lased enamel slabs not subjected to the in situ cariogenic challenge were also used as control. Enamel slabs from the two in situ groups exhibited lower hardness when compared to control. Lased enamel showed higher hardness values up to 60 microm in ...Continue Reading

References

Mar 1, 1990·Journal of Dental Research·J R MellbergN E Grote
Nov 1, 1973·Archives of Oral Biology·O G GoldJ Van Houte
Oct 1, 1984·Journal of Dental Research·P ArnebergG Rölla
Jan 1, 1995·Caries Research·S Tagomori, T Iwase
Jan 1, 1997·Dental Materials : Official Publication of the Academy of Dental Materials·M T AriyaratnamA S Blinkhorn
Feb 24, 2001·Journal of Clinical Laser Medicine & Surgery·J E PelinoA O Jorge
Jul 11, 2001·Journal of Clinical Laser Medicine & Surgery·M HossainK Matsumoto
Dec 3, 2002·Caries Research·Chia-Ling TsaiHseuh-Wen Chang
Nov 19, 2003·Dental Materials Journal·Yong Hoon KwonKyo-Han Kim

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Citations

May 19, 2007·Photomedicine and Laser Surgery·Carina S CastellanPatricia M De Freitas
Oct 31, 2006·Photomedicine and Laser Surgery
Jul 3, 2009·Photomedicine and Laser Surgery·Chun-Chih Chen, Shun-Te Huang
Jan 23, 2013·Photomedicine and Laser Surgery·Alessandra M Correa-AfonsoRegina G Palma-Dibb
Apr 12, 2016·Journal of Photochemistry and Photobiology. B, Biology·Arash AziziArash Rahimi
Aug 3, 2011·Microscopy Research and Technique·Alessandra M Correa-AfonsoRegina G Palma-Dibb
Feb 18, 2014·Lasers in Medical Science·Alessandra Marques Corrêa-AfonsoMaria Cristina Borsatto
Aug 4, 2016·Frontiers in Microbiology·Isabel Prada-LópezInmaculada Tomás
Jun 6, 2012·Brazilian Dental Journal·Danielle Torres AzevedoRegina Guenka Palma-Dibb
Feb 28, 2019·Journal of Lasers in Medical Sciences·Nastaran Chokhachi Zadeh MoghadamSara Ghadimi

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