athome bleaching system effect on gingival tissue this study evaluated the effects of an athome vital bleaching system on gingival responses over a 6week period objective measures were utilized to measure and monitor gingival inflammation over this period of time vital bleaching was performed as follows 1 bleaching gel in a prefabricated mouthguard and 2 an admix techniquebleaching gel and toothpaste in a 11 ratio in addition a control group used a placebo in a prefabricated mouthguard the athome vital bleaching system produced no adverse gingival tissue responses furthermore the athome vital bleaching system helped produce a therapeutic effect on inflamed gingival tissues over the course of the study