Effects of mouthrinses on color stability of the latest composites

Objectives:Application of mouthrinses has been recommended for prevention of periodontal disease and caries. In esthetic dentistry the demand for good color stability is increasing. The aim of this study was to compare the color stability of three commercially available mouthrinses on a nanofill (Filtek Supreme; 3M ESPE) , a nanohybrid (Grandio, Voco) and a microfill (Artemis, Vivadent) composites. Materials and Methods: Mouthrinses were used as treatment groups, while distilled water served as the control. Total of 96 specimens, each experimental group consisting of 8 samples were fabricated from each restorative test material using metal mold. The samples were stored in 20 mL of one of the mouthrinses for 12 h, that was reported as the equivalent time to 1 year of 2-min daily mouthrinse use. Results:Color changes of restorative materials were measured by using a calibrated spectrophotometer before and after exposing to the test solutions. Discoloration rate of nanofill, nanohybrid and microfill is 90.6%, 93.5 %, 93.8% respectively.Nanofill composite showed the least discoloration. Care should be taken in the interpretation of the results which may differ in the oral enviroment. Conclusion: Application of mouthrinses may affect the color of the restorative materials.