Labial The labial surface is the surface of the tooth toward the lips. The Tooth Surfaces Each anterior tooth has five exposed surfaces. I Simplifying Anterior Dental Anatomy I Port ♱11♰ Ra IThe Internal Structure of the Teeth I PTC 1 and 2)Īuterior A11nto111y n11d !lie, cie11cc ofa Natura l Smile The soft tissue that directly surrou nds all the teeth is called the gingiva. Bite down on your teeth now and you can feel the cushioning effect of the periodontal ligament. A layer of fibrous connective tissue called the period ontal ligament, or period ontal memb rane, attaches to the lamin a dura and the cemen tum of the root, holding the tooth in the socket. The alveolus is lined with a thin layer of bone called the lamin a dura. 1 and 2) The socket that contains each individual tooth is called the alveolus.
The hard, outer shell of the alveolar process is know n as the cortic al plate. Rather than being solid, the alveolar process is made of a porous, spongy bone. The tooth sits in a socket in the alveol ar process, the bone that suppo rts all the maxillary and mand ibular teeth. Proil11di1 ity 1n1i11i11g Cor/>orntic'11 1į'nrl ()nc I The Intern al Struct ure of the Teeth I PTC The CEJ extends around the circumference of the tooth. The cemento-enamel junction is often referred to as simply the "CE]". 1) The line on the surface of the tooth where the cementum meets the enamel is called the cementoenamel junction. The cementum is less dense than the dentin and provides an attachment to the surrounding tissue. 1) Cementum is a thin layer of bony tissue covering the root. The enamel is composed of prisms, or rods, that align perpendicular to the surface of the dentin and radiate outward, just like the dentinal tubules. TechBOOk Anterilr AnatOl'lf&The S111/ 11t'Įnamel is the hard, mineralize d tissue which covers the crown, or the exposed part of the tooth.
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