TODENTJ-25-03-2019_TODENTJ-2-61 1553504992 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 4 29 2008 2 1 Rafael L.X. Consani Rose Y Iwasaki Marcelo F Mesquita Wilson B Mendes Simonides Consani This study evaluated the effect of repeated microwave disinfections on the adaptation of the maxillar denture base using 2 different flask closure methods. Twenty stone cast-wax base sets were prepared for flasking by traditional cramp or RS system methods. Five bases for each method were submitted to 5 repeated simulated disinfections in a microwave oven with 650W for 3 minutes. Control bases were not disinfected. Three transverse cuts were made through each stone cast-resin base set, corresponding to canine, first molar, and posterior region. Measurements were made using an optical micrometer at 5 points for each cut to determine base adaptation: left and right marginal limits of the flanges, left and right ridge crests, and midline. Results for base adaptation performed by the flask closure methods were: traditional cramp (non-disinfected = 0.21 ± 0.05mm and disinfected = 0.22 ± 0.05mm), and RS system (non-disinfected = 0.16 ± 0.05 and disinfected = 0.17 ± 0.04mm). Collected data were submitted to ANOVA and Tukey test (α=.05). Repeated simulated disinfections by microwave energy did not cause deleterious effect on the base adaptation, when the traditional cramp and RS system flask closure methods were compared. 4 29 2008 61 66 TODENTJ-2-61 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2008-2-26 2008-3-27 2008-4-29 http://creativecommons.org/licenses/by/2.5/ 10.2174/1874210600802010061 1553504992 https://opendentistryjournal.com/VOLUME/2/PAGE/61/ https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-61/TODENTJ-2-61.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-61/TODENTJ-2-61.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-61/TODENTJ-2-61.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-61/TODENTJ-2-61.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-61/TODENTJ-2-61.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-61/TODENTJ-2-61.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-61/TODENTJ-2-61.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-61/TODENTJ-2-61.xml Anusavice KJ. 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