Ozer, Senem YigitBasaran, Emine2024-04-242024-04-2420131329-19471747-4477https://doi.org/10.1111/j.1747-4477.2009.00218.xhttps://hdl.handle.net/11468/17661This study evaluated the root canal seal achieved by irradiation with an erbium, chromium:yttrium-scandium-gallium-garnet laser, and the optimal output power to remove debris and the smear layer were determined. One hundred mandibular premolar teeth were prepared and divided into four groups. Group 1 was not lased but was irrigated with 5mL of 5.25% NaOCl and 5mL of 17% ethylenediaminetetraacetic acid. Group 2 was irradiated at a panel setting of 1W, group 3 at 2W and group 4 at 2.5W, with a 50% water level and 48% air-cooling level. Root canals were obturated by cold lateral compaction, and apical microleakage was measured using a fluid filtration model. The remaining debris and smear layer were evaluated via scanning electron microscopy. Statistically significant differences were detected between groups. Irradiation at 1 and 2W using an erbium, chromium:yttrium-scandium-gallium-garnet laser produced a seal superior to that of the other treatments.eninfo:eu-repo/semantics/closedAccessApical MicroleakageErCr:Ysgg LaserOutput PowerScanning Electron MicroscopeSmear LayerArticle391814WOS:0003169625000032-s2.0-848756613082355150710.1111/j.1747-4477.2009.00218.xQ2Q4