Over the past decades, intensive work has been carried out to expand the possibilities of aesthetic dentistry; the range of demands from patients has also increased. One of the main conditions for the long service life of filling material is careful oral care using the full arsenal of available hygiene products. We analyzed the effect of mouth rinses with various active ingredients (fluorine, chlorhexidine digluconate, medicinal plant extracts) on the level of oral hygiene, as well as on the quality of the filling, in particular on the color of the aesthetic restoration after their use. At the end of the study, all subjects experienced a significant improvement in oral hygiene (decrease in API scores). However, a negative effect of a liquid product containing chlorhexidine digluconate (Waterdent “Chlorhexidine mouthwash with mint flavor”) on the quality of composite restorations has been established. The use of additional oral hygiene products can reduce the risk of caries, but their selection must be personalized so as not to have a negative impact on the aesthetics of composite restorations.