Clinical Oral Investigations

, Volume 23, Issue 11, pp 4051–4058 | Cite as

Comparison of Er,Cr:YSGG and diode laser effects on dentin hypersensitivity: a split-mouth randomized clinical trial

  • S. Pourshahidi
  • H. Ebrahimi
  • A. Mansourian
  • Y. MousaviEmail author
  • M. Kharazifard
Original Article



The aim of the present study was to compare the clinical efficacy of diode laser and Er,Cr:YSGG lasers in the treatment of dentin hypersensitivity.

Materials and methods

Thirty-four teeth from 17 patients with dentin hypersensitivity were divided into two groups. In group D, the teeth were irradiated with diode laser beams with a wavelength of 940 nm for 1 min, and in group E, the teeth were irradiated with Er,Cr:YSGG laser beams with a wavelength of 2780 nm and a pulse width of 140–200 μs. Treatments with laser beams were carried out in 1 session. Sensitivity was assessed with air spray and a dental explorer. Pain severity was measured with the use of visual analog scale (VAS) before and after laser application.


A decrease in dentin hypersensitivity was observed in both groups immediately, 1 week, and 1 month after laser irradiation. Statistically significant differences were found between the two groups in dentin hypersensitivity severity only 1 month after laser application. The decrease in dentin hypersensitivity by Er,Cr:YSGG laser was significantly higher than that by diode laser at this time interval.


The decrease in dentin hypersensitivity after application of Er,Cr:YSGG laser was significantly higher than that after the application of diode laser at 1-month postoperative interval.

Clinical relevance

Er,Cr:YSGG laser is a better choice than diode laser for the treatment of dentin hypersensitivity in the short term.


Dentin hypersensitivity Diode laser Er,Cr:YSGG laser Desensitization 



Tehran University of Medical Science Research Center supported this study financially.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

Tehran University of Medical Sciences Ethics Committee approved the protocol of this study under the code ir.tums.rec1394.1559.

Informed consent

Informed consent was obtained from all the participants included in the study.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Oral Medicine, Faculty of DentistryTehran University of Medical SciencesTehranIran
  2. 2.Department of Laser, International BranchTehran University of Medical SciencesTehranIran
  3. 3.Department of Periodontics, Faculty of DentistryTehran University of Medical SciencesTehranIran
  4. 4.Tehran University of Medical Sciences Research CenterTehranIran

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