Lasers in Medical Science

, Volume 23, Issue 3, pp 283–287 | Cite as

Comparing the effects of root surface scaling with ultrasound instruments and Er,Cr:YSGG laser

  • Zohre Tabibzadeh Noori
  • Reza Fekrazad
  • Behnam Eslami
  • Ardavan Etemadi
  • Shabnam Khosravi
  • Maziar MirEmail author
Original Article


There are several studies done to show the comparability of laser scaling and root planing with routine methods. The most suitable wavelengths for such an application are reported as 2,940 and 2,780 nm. The superficial interactions of the current wavelength with root surface is investigated in this study to compare the crater and crack formation during the procedures between ultrasound and Er,Cr:yttrium–scandium–gallium garnet (YSGG; 2,780 nm) laser-treated teeth. Thirty human teeth with calculus on their root surface, which were extracted because of the severe periodontitis, were selected for this interventional in vitro study. Calculus area were divided into two equal parts: One of them was prepared for Er,Cr:YSGG (Biolase, Waterlase, USA) laser irradiation and the other one for ultrasound treatment (Dentsply cavitron, DENTSPLY International, USA). The Er,Cr:YSGG laser was specified as follows: pulse energy = 50 mJ, power = 1 W, wavelength = 2,780 nm, pulse repetition rate = 20 pulse per seconds, tip length = 6 mm, and tip diameter = 600 μm. Nineteen of the laser samples (95%) and eight of ultrasound ones (40%) out of 20 samples in each group had craters showing a statistical significant difference (p < 0.001). The number and depth of these craters are also evaluated. Thirteen samples of the laser cases (65%) and all samples of the ultrasound group showed cracks with significant differences (p = 0.008). In addition, the number and width of cracks in both groups are reported. As a general conclusion, the laser-treated samples show more craters but less cracks.


Er Cr:YSGG laser Ultrasound scaler Root planing Crater Crack SEM 



This study was done with the support of the Center of dental research in Shaheed Beheshti University of Medical Sciences. Therefore, the authors would like to thanks the directors and staff of this center for their help.


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Copyright information

© Springer-Verlag London Limited 2007

Authors and Affiliations

  • Zohre Tabibzadeh Noori
    • 1
  • Reza Fekrazad
    • 2
  • Behnam Eslami
    • 3
  • Ardavan Etemadi
    • 1
  • Shabnam Khosravi
    • 4
  • Maziar Mir
    • 5
    Email author
  1. 1.Department of Periodontology, Faculty of DentistryShaheed Beheshti Medical UniversityTehranIran
  2. 2.Laser Research Centre, Faculty of DentistryShaheed Beheshti Medical UniversityTehranIran
  3. 3.Department of Pathology, Faculty of DentistryShaheed Beheshti Medical UniversityTehranIran
  4. 4.Private practiceTehranIran
  5. 5.Department of Conservative Dentistry, Periodontology and EndodonticsAachen RWTH HospitalAachenGermany

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