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

Abstract

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 microm. 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.

• Authors: Zohre Tabibzadeh Noori, Reza Fekrazad, Behnam Eslami, Ardavan Etemadi, Shabnam Khosravi, Maziar Mir
• Journal: Lasers in medical science (Lasers Med Sci) Vol. 23 Issue 3 Pg. 283-7 (Jul 2008) ISSN: 0268-8921 [Print] England
• PMID: 17764026 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Chromium
• Erbium

Topics

• Chi-Square Distribution
• Chromium
• Dental Calculus (radiotherapy)
• Dental Scaling (instrumentation)
• Erbium
• Humans
• Microscopy, Electron, Scanning
• Root Planing (instrumentation)
• Statistics, Nonparametric
• Surface Properties
• Tooth Root (radiation effects, ultrastructure)
• Ultrasonic Therapy (instrumentation)