It's also possible that you have the correct application on your PC, but .afp files aren't yet associated with it. In this case, when you try to open a .afp file, you can tell Windows which application is the correct one for that file. From then on, opening a .afp file will open the correct application.
Dentin is found underneath the enamel surface of the tooth and underneath the cementum that forms along a tooth's roots. Made of living cellular material and tissue, dentin is what makes up the majority of a tooth's structure. Dentin is a bone-like substance that contains microscopic tubules. Unlike enamel, exposed dentin is highly susceptible to the bacteria that cause dental cavities and can cause tooth sensitivity. Cementum.
Teeth consist of several components: 1  Enamel is the hardest and most highly mineralized substance of the body. 2  Dentin is the substance between enamel or cementum and the pulp chamber. 3  Cementum is a specialized bony substance covering the root of a tooth.  Pulp is the central part of the tooth filled with soft connective tissue.