RESUMEN
Objective: To evaluate the effect of several beverages on the physical properties of SonicFill (Kerr Corp.,USA), a new bulk-fill dental composite, over a period of time. Methods: A total of 28 discs (10 mm x 2mm) were prepared and randomly assigned into 4 groups (n=7) according to the beverages they wouldbe immersed in. The beverages chosen were Coca-Cola?, Nescafe? coffee, Lipton tea? and distilledwater (control). Surface roughness, microhardness and colour stability were evaluated using 3D opticalsurface texture analyser, Vickers microhardness tester and spectrophotometer respectively. Readingswere recorded at the time intervals of 24 hours, 1 week and 1 moth after immersion. The data obtainedwere analysed using one-way ANOVA, repeated measures ANOVA and MANOVA. Results: There weresignificant differences in surface roughness for only two pairs of groups (distilled water and Coca-Cola,distilled water and coffee). However, there was no significant difference between the groups within thechosen time. Statistical analysis showed significant difference in microhardness between time only forCoca-Cola, with significant differences between 24 hours and 1 week; and 24 hours and 1 month. Forthe colour evaluation, there was significant difference between the groups within time. Conclusions:All the beverages chosen were able to affect the physical properties of the SonicFill. However, noparticular beverage had a higher or lower impact on the surface roughness than the other beverages.Microhardness was affected by distilled water and Coca-Cola, in ascending order. Colour was affectedmost by coffee, followed by tea and Coca-Cola.