TODENTJ-25-03-2019_TODENTJ-12-443 1553507401 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 05 31 2018 12 1 Roxana Sarmadi Elin Viktoria Andersson Peter Lingström Pia Gabre Objective: The aim of this study was to evaluate patients´ experiences of two excavation methods, Er:YAG laser and rotary bur and time required by the methods as well as objective assessments of quality and durability of restorations over a two-year period. Methods: A prospective, single-blind, randomized and controlled investigation was performed. Patients aged 15 to 40 years with at least two primary caries lesions, which had been radiographically assessed as of the same size, were recruited. In each patient, one cavity was excavated using rotary bur and one using Er:YAG laser technique. The time required for excavations and, where applicable, local anaesthesia, was measured during the treatments. Patient experiences were measured using questionnaires. The quality and durability of restorations were assessed over a two-year period in accordance with modified Ryges criteria and radiographs. Twenty-five patients (mean age 22.6 years) participated in the study. In total, 56 cavities were included of which 28 were treated with Er:YAG laser and 28 were treated with a rotary bur. Results: The patients associated the laser method with less discomfort. The mean time for excavation by laser was three times longer than by rotary bur (13.2 min vs. 4.3 min, P<0.0001). Over a two-year period, no statistically significant differences with regard to quality or durability could be seen between the restorations associated with the methods. Conclusion: The Er:YAG laser technique was more time-consuming than the rotary bur. Despite this, the laser technique caused less discomfort and was preferred as an excavation method by patients. 05 31 2018 443 454 TODENTJ-12-443 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2018-2-14 2018-4-23 2018-5-14 2018-05-31 https://creativecommons.org/licenses/by/4.0/legalcode 10.2174/1874210601812010443 1553507401 https://opendentistryjournal.com/VOLUME/12/PAGE/443/ https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-443/TODENTJ-12-443.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-443/TODENTJ-12-443.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-443/TODENTJ-12-443.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-443/TODENTJ-12-443.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-443/TODENTJ-12-443.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-443/TODENTJ-12-443.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-443/TODENTJ-12-443.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-443/TODENTJ-12-443.xml Pediatr. 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