Effect of bleaching on the color match of single-shade resin composites.

To evaluate the color match of single-shade resin composites before and after bleaching procedures, through instrumental and visual analyses. Class V cavities were created on the buccal surfaces of 80 extracted human molars, restored with 4 single-shade composites (Omnichroma; Clearfil Majesty ES-2 Universal; Essentia Universal; Venus Diamond One). A spectrophotometer (VITA Easyshade V) was used to evaluate the tooth/resin color match before (T Spectrophotometric evaluations revealed statistically significant differences between materials at T Data seem to indicate that single shade composites are able to shift their color when the surrounding tooth undergoes bleaching effects. Single-shade composites seem to achieve a good color match with the surrounding tooth structure, before and after professional bleaching.