TODENTJ-25-03-2019_TODENTJ-2-13 1553504980 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 1 22 2008 2 1 Rafael L.X. Consani Marcelo F. Mesquita Marinaldo H. Zampieri Wilson B. Mendes Simonides Consani The objective of this study was to determine the effect of simulated microwave disinfection on the tooth/acrylic resin impact strength. Acrylic molar teeth with a wax stick attached to the ridge lap were included in brass flasks. Specimens were made with Classico thermopolymerized acrylic resin, according to the groups: 1 and 5 - tooth with no treatment (control); 2 and 6 – tooth bur abrasion; 3 and 7 – tooth bur retention; and 4 and 8 – tooth monomer etch. Eighty specimens (n=10) were polymerized in bath cycle at 74ºC for 9 hours and deflasked after flask cooling. Specimen from groups 2, 4, 6 and 8 was submitted to simulated microwave disinfection in a microwave oven at 650W for 3 minutes. Impact strength test was performed with an Otto Wolpert-Werke machine (Charpy system) with an impact load of 40 kpcm. Fracture load value was transformed into impact strength as a function of the bond area (kfg/cm2). Collected data were submitted to ANOVA and Tukey’s test (α=.05) and results indicate that the simulated microwave disinfection decreased the impact strength in all treatments. 1 22 2008 13 17 TODENTJ-2-13 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2007-10-25 2007-12-12 2008-1-22 http://creativecommons.org/licenses/by/2.5/ 10.2174/1874210600802010013 1553504980 https://opendentistryjournal.com/VOLUME/2/PAGE/13/ https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-13/TODENTJ-2-13.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-13/TODENTJ-2-13.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-13/TODENTJ-2-13.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-13/TODENTJ-2-13.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-13/TODENTJ-2-13.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-13/TODENTJ-2-13.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-13/TODENTJ-2-13.pdf https://opendentistryjournal.com/contents/volumes/V2/TODENTJ-2-13/TODENTJ-2-13.xml J Prosthet Dent Brace ML 70 538 1993 Brace ML, Plummer KD. 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