Long-term treatment results with nightguard vital bleaching.

Since its introduction into dentistry in 1989, nightguard vital bleaching has been proven to be a simple and safe procedure to lighten discolored teeth. Efficacy of the technique is 98% for nontetracycline-stained teeth, and with extended treatment time, tetracycline-stained teeth can be expected to lighten in at least 86% of cases. Satisfactory retention of the shade change without re-treatment can be expected in at least 43% at 10 years posttreatment. Side effects are usually mild and transient, disappearing within days of treatment completion with no long-term sequelae. Participants report that they are glad they went through the procedure, and wild recommend the procedure to a friend.