L1 Dental Terminology.pdf

Dental Terminology Dr Noor Al Mortadi BSc, MDSc, PhD (Dental Technology) Occlusion Anterior Teeth Posterior Teeth Maxillary Arch Mandibular Arch Anatomy of tooth: A. Clinical Crown: The visible part of tooth above the gum line. B. Root: The...

Dental Terminology Dr Noor Al Mortadi BSc, MDSc, PhD (Dental Technology) Occlusion Anterior Teeth Posterior Teeth Maxillary Arch Mandibular Arch Anatomy of tooth: A. Clinical Crown: The visible part of tooth above the gum line. B. Root: The part of tooth embedded in the alveolar process and covered by cementum Parts of tooth Pulp: The innermost tissues containing blood vessels, lymphatics, and nerves Cementum: Bone like tissue covering the root of the tooth. Tissues of the tooth 1. Enamel:  Makes the anatomic crown  The hardest material in the human body  Incapable of remodeling and repair 2. Dentin:  Makes up the bulk of tooth  Covered by enamel on the crown of tooth  Not as hard as enamel  Exposed dentin is often sensitive to cold, hot, air 3. Cementum:  Covers the root of tooth  Overlies the dentin and joins the enamel at the cemento-enamel Junction  Primary function is to anchor the tooth in the bony socket with the attachment fibers. 4. Pulp: Made up of blood vessels and nerves entering the apical foramen  Contains connective tissue, which aids interchange between pulp and dentin. Surfaces of teeth Crowns of all teeth have five surfaces. 1. Facial Surface Facial surface can be labial surface or buccal surface. a. Labial surface. The surfaces of incisors and canines that are towards the lip. b. Buccal surface. The surfaces of premolars and molars that face the cheek.  2 1 3 3 2 4 1. Buccal surface 1. Labial surface 2. Lingual surface 2. Mesial surface 3. Occlusal surface 3. Distal surface 4. Mesial surface (not 4. Incisal edge appear on above) 5. Palatal surface (not 5. Distal surface (not appear on above) appear on above Lingual for lower Jaw Palatal for upper jaw palatal Division of canine from Front: it has one cusp  1. Distal third  2. Middle third  3. Mesial third Distal Mesial Middle Proximal surfaces a. Incisal edge. The surface of incisors and canines that come in contact with those in the opposite jaws during the act of closure are called incisal surfaces b. Occlusal surface. The surface of premolars and molars that come in contact with those in the opposite jaws during the act of closure are called occlusal surfaces. Elevations on tooth surface  1. Cusp. An elevation on the crown of a tooth (c). C C C C C C Cusps Depressions on tooth surface