He points out that removing stains within the matrix of your tooth enamel is like receiving out dirt trapped in chicken wire: "What exactly happens in whitening is we wish to... open the matrix and bubble out that colour, the stain, and afterwards shut it again up." Gingival discomfort can https://exterior-post-light90123.canariblogs.com/little-known-facts-about-led-teeth-whitening-33349152