After a prolonged antibiotic treatment (tetracycline) my teeth were discolored grayish, more stubborn than a superficial yellowing of the enamel by drinks or food. My dentist suggested an in-office bleaching, which is the only effective treatment. I wanted to advance even try a less expensive method and bought two packs Onuge 'Bright White'. In fact, after only 5 days a brightening and softening the gray haze was seen with two repeated use over one hour each. After two weeks, almost all his teeth were visibly brightened. Temporarily was an irregular whitening (white spots) to see, but gradually the color compensated on. Now I cut through the strip and treat with the second pack, only individual teeth. I can not confirm the common complaint, painful gums changes / inflammations. I have always applied the strips very carefully along the gumline and cleaned after removing the strips the teeth with a very soft toothbrush from the residues. So far I am very happy - but I can not yet assess whether the success of longer duration is.
