Canine teeth, also known as cuspids, are sharply pointed, cone-shaped teeth that are used for ripping tough material like meat.Incisors are chisel-shaped teeth found in the front of the mouth and have a flat apical surface for cutting food into smaller bits.Teeth are classified into four major groups: incisors, canines, premolars, and molars. Enamel is the hardest substance in the body and is made almost exclusively of hydroxylapatite. The enamel - the white, outer layer of the crown - forms an extremely hard, nonporous cap over the dentin.The structure of the dentin layer is very porous, allowing nutrients and materials produced in the pulp to spread through the tooth. Dentin is much harder than the pulp due to the presence of collagen fibers and hydroxylapatite, a calcium phosphate mineral that is one of the strongest materials found in nature. Surrounding the pulp is the dentin, a tough, mineralized layer of tissue.Stem cells known as odontoblasts form the dentin of the tooth at the edge of the pulp. Tiny blood vessels and nerve fibers enter the pulp through small holes in the tip of the roots to support the hard outer structures. The pulp of the tooth is a vascular region of soft connective tissues in the middle of the tooth.Cementum provides grip for the periodontal ligaments that anchor the root to the surrounding alveolus.Įach tooth is an organ consisting of three layers: the pulp, dentin, and enamel. The exterior surface of the root is covered in a bone-like mixture of calcium and collagen fibers known as cementum. Roots are tapered structures resembling the roots of plants, and each tooth may have between one to three roots. Below the gum line is the region of the tooth called the root, which anchors the tooth into a bony socket known as an alveolus.mycontentbreak ![]() Like an actual crown, the crown of a tooth has many ridges on its top surface to aid in the chewing of food. ![]() Found above the gum line, the crown is the enlarged region of the tooth involved in chewing. They also provide shape to the mouth and face and are important components in producing speech.Ī tooth can be divided into two main parts: the crown and root. We use teeth to masticate (or chew) food into tiny pieces. The teeth are a group of hard organs found in the oral cavity.
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