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Lasers in Medical Science

, Volume 34, Issue 3, pp 449–455 | Cite as

Er,Cr:YSGG laser associated with acidulated phosphate fluoride gel (1.23% F) for prevention and control of dentin erosion progression

  • S. J. C. Bezerra
  • L. R. Trevisan
  • I. E. L. Viana
  • R. M. Lopes
  • D. L. Pereira
  • A. C. C. Aranha
  • Taís ScaramucciEmail author
Original Article
  • 110 Downloads

Abstract

To evaluate the effect of Er,Cr:YSGG laser, associated with fluoride application, on the prevention/control of dentin erosion. Dentin slabs were embedded in acrylic resin, flattened, and polished. Half of the specimens were previously eroded (10 min immersion in 1% citric acid solution) and half were kept sound. The specimens (n = 10 each substrate) were randomly allocated into the experimental groups, according to the following treatments: control (no treatment); APF gel (1.23% F, 1 min); Er,Cr:YSGG laser irradiation (P1: 0.25 W, 20 Hz, 2.8 J/cm2, tip S75, beam diameter of 750 μm, 1 mm away from the surface); Er,Cr:YSGG laser irradiation (P2: 0.50 W, 20 Hz, 5.7 J/cm2, tip S75, beam diameter of 750 μm, 1 mm away from the surface); APF gel + Er,Cr:YSGG laser P1 and; APF gel + Er,Cr:YSGG laser P2. Afterwards, the specimens underwent an erosion-remineralization cycling, consisting of a 5-min immersion into 0.3% citric acid, followed by 60-min exposure to artificial saliva. This procedure was repeated 4×/day, for 5 days. Surface loss (SL, in μm) was determined by optical profilometry. Specimens from each group were analyzed by environmental scanning electron microscopy (n = 3). Data were statistically analyzed (α = 0.05). For the eroded specimens, APF gel presented the lowest SL, being different from the control. For the sound specimens, none of the groups differed from the control, except for Er,Cr:YSGG laser P2, which presented the highest SL. When substrates were compared, only the eroded specimens of the control and APF + Er,Cr:YSGG laser P1 Groups showed higher SL. Selective structure removal was observed for the laser-treated groups. None of the Er,Cr:YSGG laser parameters were effective in the prevention/control dentin erosion. The laser was also unable to enhance the protection of fluoride against dentin erosion.

Keywords

Tooth erosion Er,Cr:YSGG laser Fluoride Dentin Prevention 

Notes

Acknowledgments

The authors would like to thank FAPESP (São Paulo Research Foundation, for the scholarship 2016/25883-0), and LELO (Special Laboratory of Lasers in Dentistry from the Department of Restorative Dentistry at the School of Dentistry of the University of São Paulo, Brazil).

Funding

The work was supported by the São Paulo Research Foundation (FAPESP, scholarship no. 2016/25883-0).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

For this type of study formal consent is not required.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Restorative Dentistry, School of DentistryUniversity of São PauloSão PauloBrazil
  2. 2.Institute of Energetic and Nuclear ResearchIPEN/CNEN/SPSão PauloBrazil
  3. 3.Special Laboratory of Lasers in Dentistry (LELO), Department of Restorative Dentistry, School of DentistryUniversity of São PauloSão PauloBrazil

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