The bleach reacts with the coloured molecules that trigger discolouration. The dentine then results in being lighter as well as the teeth glance whiter. Bleach also can make the enamel surface far more reflective, which seems to be whiter as well. Laser teeth whitening expenditures much more than other approaches. https://jaspertircl.topbloghub.com/23042818/the-greatest-guide-to-teeth-whitening