Effects of heating by steam autoclaving and Er:YAG laser etching on dentin components.

Lasers in Medical Science
Luís Eduardo Silva SoaresAirton A Martin

Abstract

The simultaneous need for infection-control protocols in sample preparations and for safe laser irradiation parameters prompted this study about the effects of heat produced by both sample sterilization and laser etching on dentin components. The dentin was exposed on 30 bovine incisors, and then divided into two main groups: autoclaved (group A) or thymol treatment (group B). The surface of the dentin was schematically divided into four areas, with each one corresponding to a treatment subgroup. The specimens were either etched with phosphoric acid (control-CG) or irradiated with Er:YAG laser (subgroups: I-80 mJ, II-120 mJ, and III-180 mJ). Elemental distribution maps were done by energy-dispersive X-ray fluorescence (μ-EDXRF) on each treatment area. The dentin surface in depth was exposed and line-scan maps were performed. The B_CG treatment produced the best distribution of calcium (Ca) and phosphorus (P) content throughout the dentin surface. Er:YAG laser etching produced irregular patterns of elemental distribution in the dentin. Laser energies of 120 and 180 mJ produced the highest maximum calcium values. The Er:YAG laser energy of 180 mJ produced a localized increase in Ca and P content on the superficial layer of the de...Continue Reading

References

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Jan 24, 2007·Lasers in Medical Science·Piyanart EkworapojJohn F McCabe
Mar 14, 2007·Photomedicine and Laser Surgery·Luís Eduardo Silva SoaresAirton Abrahão Martin
Sep 7, 2007·Photomedicine and Laser Surgery·Luís Eduardo Silva SoaresAirton Abrahão Martin
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May 2, 2009·Journal of Biomedical Optics·Luís Eduardo Silva SoaresAirton Abrahão Martin

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Citations

Dec 2, 2014·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Luís Eduardo Silva Soares, Ana Maria do Espírito Santo
Feb 16, 2017·Journal of Applied Oral Science : Revista FOB·Vanessa Benetello DaineziRegina Maria Puppin-Rontani
Jun 28, 2018·Clinical Oral Investigations·Ruodan JiangHong Lin
Dec 29, 2020·Journal of Endodontics·Chin-Lo Hahn, Kathryn Hanford

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