The tooth is made of three layers: the outer tooth enamel, an underlying dentin layer and connective tissue that binds the roots to the gum. Most studies of whitening strips have focused ontooth enamel, which contains very little protein. Kennan's research team focuses on dentin, which makes ...
regenerated isocyanate group was 5.0% and the content of solid portion was 60%. By means of a paint conditioner were sufficiently kneaded 52.1 parts of polyester polyol obtained in Example 2, 35.0 parts of titanium oxide and 13.0 parts of cyclohexanone to give a white enamel with a hydroxyl ...