Usually, in each session, 2 applications of 20 minutes are being done to accomplish the desired results. But on the teeth that are very coloured, more than one session might be needed. There should be a gap of one week between each session. The effects of teeth whitening last between 6 months and 3 years depending on the oral hygiene and eating habits of the patients.
0 comments on “How many sessions are needed for a laser teeth whitening? How long will the effect last?”