Q-switched versus free-running Er:YAG laser efficacy on the root canal walls of human teeth: A SEM study

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dc.contributor.author Khabbaz, MG en
dc.contributor.author Makropoulou, MI en
dc.contributor.author Serafetinides, AA en
dc.contributor.author Papadopoulos, D en
dc.contributor.author Papagiakoumou, E en
dc.date.accessioned 2014-03-01T01:21:16Z
dc.date.available 2014-03-01T01:21:16Z
dc.date.issued 2004 en
dc.identifier.issn 0099-2399 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/16178
dc.subject Root Canal en
dc.subject Yag Laser en
dc.subject.classification Dentistry, Oral Surgery & Medicine en
dc.subject.other article en
dc.subject.other controlled study en
dc.subject.other dental surgery en
dc.subject.other dentin en
dc.subject.other endodontics en
dc.subject.other erbium YAG laser en
dc.subject.other human en
dc.subject.other human tissue en
dc.subject.other scanning electron microscopy en
dc.subject.other tooth root canal en
dc.subject.other Aluminum Silicates en
dc.subject.other Dental Pulp Cavity en
dc.subject.other Dentin en
dc.subject.other Equipment Design en
dc.subject.other Erbium en
dc.subject.other Humans en
dc.subject.other Laser Surgery en
dc.subject.other Lasers en
dc.subject.other Microscopy, Electron, Scanning en
dc.subject.other Root Canal Preparation en
dc.subject.other Smear Layer en
dc.subject.other Yttrium en
dc.title Q-switched versus free-running Er:YAG laser efficacy on the root canal walls of human teeth: A SEM study en
heal.type journalArticle en
heal.identifier.primary 10.1097/01.DON.0000121612.74269.0D en
heal.identifier.secondary http://dx.doi.org/10.1097/01.DON.0000121612.74269.0D en
heal.language English en
heal.publicationDate 2004 en
heal.abstract Twenty-one teeth with one root canal were prepared by the step-back technique, divided into three groups, and split longitudinally. Group A served as a control. In group B, 20 to 150 pulses of 100 mus, 30 to 70 mJ per pulse at 1 to 4 Hz from a free-running Er:YAG laser were applied to the root-canal dentin. In group C, the Q-switched Er:YAG laser, with the same energy parameters and a 190-ns pulse duration was used. Scanning electron microscopy examination revealed that control specimens had debris and smear layer obscuring the dentinal tubules at all levels in the canals without crack formation. Both groups of laser-treated dentin were clean with opened dentinal tubules except around the lased area in which there was an intact smear layer. Cracks were observed in both laser groups with higher frequency in group C. In group B, craters with different depth levels at the root canal walls were produced and the energy apparently was distributed equally, because craters were well-shaped. In contrast, the ablation efficiency in group C was questionable with the parameters used in this study. Consequently, suitable parameters of the free-running Er:YAG laser must be found before its careful use as an adjunct in endodontic therapy. en
heal.journalName Journal of Endodontics en
dc.identifier.doi 10.1097/01.DON.0000121612.74269.0D en
dc.identifier.isi ISI:000222923700006 en
dc.identifier.volume 30 en
dc.identifier.issue 8 en
dc.identifier.spage 585 en
dc.identifier.epage 588 en

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