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MDA Ch. 11

Modern Dental Assisting, BIrd, 10th Edition

Angle's classification System developed by Dr. Edward H. Angle to describe and classify occlusion and malocclusion.
Anterior Towards the front.
Apical third Division of the root nearest the tip of the root.
Buccal surface Tooth surface closest to the inner cheek.
Buccolingual division Lengthwise division of the crown in a labial or buccolingual direction, consisting of the facial or buccal/labial third, middle third, and lingual third.
Centric occlusion Maximum contact between the occluding surfaces of the maxillary and mandibular teeth.
Cervical third Division of the root nearest the neck of the tooth.
Concave Curved inward.
Contact area Area of the mesial or distal surface of a tooth that touches the adjacent tooth in the same arch.
Convex Curved outward.
Curve of Spee Curvature formed by the maxillary and mandibular arches in occlusion.
Curve of Wilson Cross-arch curvature of the occlusal plane.
Deciduous (duh-SID-yoo-us) Pertaining to first dentition of 20 teeth; often called "baby teeth" or primary teeth.
Dentition (den-TI-shun) Natural teeth in the dental arch.
Distal surface Surface of tooth distant from the midline.
Distoclusion (DIS-toe-kloo-shun) A class II malocclusion in which the mesiobuccal cusp of the maxillary first molar occludes (by more than the width of a premolar) mesial to the mesiobuccal groove of the mandibular first molar.
Embrasure (em-BRAY-zhur) Triangular space in a gingival direction between the proximal surfaces of two adjoining teeth in contact.
Facial surface Tooth surface closest to the face. Facial surfaces closest to the lips are called labial surfaces, and facial surfaces closest to the inner cheek are called buccal surfaces; therefore, the term facial can be substituted for labial and buccal, and vice ver
Functional occlusion Contact of the teeth during biting and chewing movements.
Incisal surface Chewing surface of anterior teeth.
Interproximal (in-tur-PROK-si-mul) space The area between adjacent tooth surfaces.
Labial surface Facial surface closest to the lips.
Labioversion The inclination of the teeth to extend facially beyond the normal overlap of the incisal edge of the maxillary incisors over the mandibular incisors.
Line angle Junction of two walls in a cavity preparation.
Lingual surface Surface of mandibular and maxillary teeth closest to the tongue; also called palatal surface.
Linguoversion Position in which the maxillary incisors are behind the mandibular incisors.
Malocclusion (MAL-o-kloo-zhun) Occlusion that is deviated from a class I normal occlusion.
Mandibular (nam-DIB-you-ler) The lower jaw.
Masticatory (MAS-ti-kuh-tor-ee) surface The chewing surface of the teeth.
Maxillary (MAK-si-lar-ee) The upper jaw.
Mesial surface Surface of the tooth toward the midline.
Mesioclusion (MEE-zee-oe-kloo-zhun) Term used for class III malocclusion.
Mesiodistal division Lengthwise division of the crown in a mesiodistal (front-to-back) direction, consisting of the mesial third, middle third, and distal third.
Middle third Division of the root in the middle.
Mixed dentition A mixture of permanent teeth and primary teeth that occurs until all primary teeth have been lost, usually between the ages of 6 and 12.
Neutroclusion An ideal mesiodistal relationship between the jaws and the dental arches.
Occlusal surface Chewing surface of posterior teeth.
Occlusion (oe-KLOO-zhun) The natural contact of the maxillary and mandibular teeth in all positions.
Occlusocervical division Crosswise division of the crown that is parallel to the occlusal or incisal surface, consisting of the occlusal third, middle third, and cervical third.
Palatal surface Lingual surface of maxillary teeth.
Permanent dentition The set of 32 secondary teeth.
Point angle Angle formed by the junction of three surfaces.
Created by: mortiz09