Photo by @darby on Twenty20.com One of the best treatment methods available to gain back that white perfect smile is teeth whitening. The basic methodology of teeth whitening is that it reverses the process of discoloration of teeth, bleaching them to reveal the white enamel again. Even though the Covid-19 pandemic is making us all use face covers, our smile is expressed in our voices and eyes, and soon we will be able to smile at everyone directly, showing them the beauty…