Urban, Vanessa Migliorini [UNESP]Machado, Ana Lucia [UNESP]Vergani, Carlos Eduardo [UNESP]Jorge, Érica Gouveia [UNESP]dos Santos, Luís Presley SerejoLeite, Edson RobertoCanevarolo, Sebastião Vicente2014-05-272014-05-272007-04-01Materials Research, v. 10, n. 2, p. 191-197, 2007.1516-1439http://hdl.handle.net/11449/69604The effect of post-polymerization treatments (MW-microwave irradiatron and WB-water-bath) on the degree of conversion (DC) of three reline resins (Ufi Gel hard-U, Kooliner-K, and Tokuso Rebase Fast-T) and one denture base resin (Lucitone 550-L), submitted to two polymerization cycles (LS-short and LL-long), was evaluated by using FT-Raman spectroscopy (n = 5). The molecular weight (Mw) of the powder of all materials and of K polymerized specimens (control; MW; and WB; n = 3) was analyzed using GPC. DC data were analyzed using Kruskal-Wallis test (α = .05). For control specimens, there were no significant differences between U (68%) and LL (77%) and among LL, K (81%), and T (84%). LS (92%) had the highest DC (P<0.05). Only material K exhibited an increased DC after WB (P<0.05). All powders had Mw from 4.0 × 105 to 6.5 × 105 and narrow Mw distributions (2.1 to 3.6). Polymerization and post-polymerization produced K specimens with Mw similar to that of K powder.191-197engDegree of conversionMolecular weightPost-polymerization treatmentReline resinMicrowave irradiationPolymerizationResinsKruskal-Wallis testReline resinsDental prosthesesArtigo10.1590/S1516-14392007000200016S1516-14392007000200016Acesso aberto2-s2.0-351488751332-s2.0-35148875133.pdf800024878184258730031305224278200000-0002-7375-4714