Objective. Evaluate the roughness and color stability of different types of resins used to

immerse denture bases in various denture cleansers overnight.

Metodology. A total of 150 resin samples were made, which were divided into 3 groups of

denture resin (conventional thermally activated, milled and 3D printed) (n= 50) and

subdivided into 5 denture cleaners (Distilled water, Corega Tabs, Efferdent, NaOCl 1.0%,

Listerine Cool Hint) (n= 10). The roughness properties (Ra) and chromatic difference (ΔE00)

were evaluated during 90 days and 180 days of overnight cleaning. Data were evaluated by

two-way ANOVA and Tukey's test for multiple comparisons (P<.05).

Results. Listerine had significantly higher Ra and ΔE values (P<.001) compared to other

solutions, being significant in conventional resin at 180 days (P<.001).

Conclusions. The use of Listerine as an overnight cleaner presents greater damage to the

optical and surface properties of denture base resins, mainly with conventional resin, with 1%

NaOCl being a valid option in relation to cost-benefit.