Cementum is a mineralized connective tissue that covers the dentin of the root of the tooth. The cementum texture is similar to bone and contains 32% organic and 68% inorganic matter. The cementum is thickest in the area of the peak (1-2mm) and branching roots. The cementum is infused with a system of canals and lacuna, through which pass thin fibrils, which are fixed a tooth for the surrounding alveoli. Cementum, similar to dentin creates throughout life and has a reparative potential.