3. ResultsSubtraction spectra (differences in the reflectance by the UV-componentoftheillumination:fluorescenceinthereflectancemode) of BUT based resin composite are presented inFig. 1,and those after thermocycling are presented inFig. 2. The val-ues for the fluorescent peak height and fluorescent area ofBUT based resin composites before and after thermocyclingare listed inTable 1. In the control group (no FWA), fluorescentpeak was not detected. The concentration of FWA influencedthe fluorescent peak height significantly (p<0.05), but thermo-cycling up to 1000 cycles did not influence the value (p=0.902),and there was no significant interaction between two independent variables based on two-way ANOVA. Fisher’s PLSDinterval by the concentration was 0.5. The concentration ofFWAinfluencedthefluorescentareasignificantly(p<0.05),butthermocycling up to 1000 cycles did not influence the value(p=0.843), and there was no significant interaction betweenFig. 3 – Subtraction spectra of FWA added experimentalresin composites by the resin matrix.two independent variables. Fisher’s PLSD interval by the con-centration was 42.0.Subtraction spectra of varied resin matrices-based resincomposites are presented inFig. 3. The values for the fluo-rescent peak height and fluorescent area are listed inTable 2.Fluorescent peak wavelengths in BT and UT based resin com-posites were similar to those of BUT based resin composites.Peak height was influenced by the type of resin matrix andconcentration of FWA, and there was significant interactionbetween two variables based on two-way ANOVA. Fisher’sPLSA interval by the resin matrix was 0.9. Fluorescent areawas influenced by the type of resin matrix and concentrationofFWAandtherewassignificantinteractionbetweentwovari-ables. Fisher’s PLSA interval by the resin matrix was 37.8.
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