Success Rate and Longevity of Internal Teeth Bleaching
The success rate of various internal bleaching methods with different materials inside and outside the office is about 83 to 90 percent. That is, out of every 100 teeth that have undergone root canal treatment and are discolored, about 10 to 17 cases do not return to their natural tooth color with the internal tooth bleaching treatment.
The durability of internal tooth whitening in some patients is lifelong. But in general, 35-50% of the teeth will still remain white about 5 years after the treatment, and for the rest, bleaching should be repeated.
Repetition of internal bleaching requires trimming the previous restoration and creating a proper access hole. For this reason, part of the healthy dental tissue is cut. Therefore, in such cases, it is better to perform external bleaching first, and if the desired result is not achieved, then internal bleaching should be repeated.
