KöR^® Whitening Deep Bleaching™ is the most effective whitening system in the world today. KöR Whitening is the only system recognized to significantly whiten even difficult tetracycline stained teeth within a short time. Deep Bleaching systems including one or two in-office whitening visits and at-home whitening. 

Over years stains from foods become intrinsic within the teeth, working their way deeply into the microstructure of the enamel rod complex. The space among the enamel rods becomes solidly packed with stain debris, preventing peroxide byproducts from penetrating the microstructure of the tooth. The result is minimal and unpredictable results. Clinical Research Associates (CRA) as well as other researchers have found that whitening gel in conventional whitening trays is only strongly active for 25-35 minutes. This is due to rapid contamination of the whitening gel by saliva. Both saliva and sulcular fluid contain an abundance of the anti-oxidant enzyme peroxidase. When filling a set of upper and lower whitening trays with whitening gel, approximately 6.5mg of peroxide is placed in the trays. Saliva is capable of destroying a full 29mg of peroxide per minute! It takes very little contamination of the whitening gel in the trays by saliva to destroy whitening gel on contact. KöR Whitening Deep Bleaching™ Trays seal both saliva and sulcular fluid out of the whitening trays. Deep Bleaching Trays in combination with KöR^® Whitening gels provide a full 6+ HOURS of whitening activity compared to the typical 25-35 minutes. Some activity has even been shown out to 10 hours. The result is a thorough cleansing out of debris from between enamel rods, rejuvenating the enamel, more closely resembling that of a young person, and of course amazing whiteness.