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Measurement of pressure changes during laser-activated irrigant by an erbium, chromium: yttrium, scandium, gallium, garnet laser

The use of Er,Cr:YSGG laser to activate irrigants results in the creation of vapour bubbles and shockwaves. The present study evaluated the magnitude of pressure changes in the root canal during laser-activated irrigation. The root canal of a single extracted maxillary canine was enlarged to a size...

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Bibliographic Details
Published in:Lasers in medical science 2015-07, Vol.30 (5), p.1449-1455
Main Authors: Peeters, Harry Huiz, De Moor, Roeland J. G.
Format: Article
Language:English
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Summary:The use of Er,Cr:YSGG laser to activate irrigants results in the creation of vapour bubbles and shockwaves. The present study evaluated the magnitude of pressure changes in the root canal during laser-activated irrigation. The root canal of a single extracted maxillary canine was enlarged to a size 40/0.06 file. A pressure sensor was inserted apically into the root canal. The tooth was processed as follows. In the EDTA condition, the tooth was irrigated with 17 % EDTA; in the NaOCl condition, the tooth was irrigated with 3 % NaOCl. In all conditions, the irrigants were activated at 0.75 and 1.75 W for 60 s using RFT2 and MZ2 tips; to analyse the effect of tip placement, the tip was activated at the orifice and after inserting the tip 5 mm deeper than the orifice. Data showed no significant difference between irrigation regimens ( p  > 0.05). There were no significant differences of the pressure between RFT2 and MZ2 tips ( p  > 0.05). The placement of tips closer to the apex resulted in significantly higher pressure than at the orifice ( p  
ISSN:0268-8921
1435-604X
DOI:10.1007/s10103-014-1605-5