Modern Dental Assisting, BIrd, 10th Edition
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| Angle's classification | System developed by Dr. Edward H. Angle to describe and classify occlusion and malocclusion.
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| Anterior | Towards the front.
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| Apical third | Division of the root nearest the tip of the root.
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| Buccal surface | Tooth surface closest to the inner cheek.
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| 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.
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| Centric occlusion | Maximum contact between the occluding surfaces of the maxillary and mandibular teeth.
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| Cervical third | Division of the root nearest the neck of the tooth.
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| Concave | Curved inward.
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| Contact area | Area of the mesial or distal surface of a tooth that touches the adjacent tooth in the same arch.
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| Convex | Curved outward.
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| Curve of Spee | Curvature formed by the maxillary and mandibular arches in occlusion.
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| Curve of Wilson | Cross-arch curvature of the occlusal plane.
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| Deciduous (duh-SID-yoo-us) | Pertaining to first dentition of 20 teeth; often called "baby teeth" or primary teeth.
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| Dentition (den-TI-shun) | Natural teeth in the dental arch.
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| Distal surface | Surface of tooth distant from the midline.
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| 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.
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| Embrasure (em-BRAY-zhur) | Triangular space in a gingival direction between the proximal surfaces of two adjoining teeth in contact.
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| 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
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| Functional occlusion | Contact of the teeth during biting and chewing movements.
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| Incisal surface | Chewing surface of anterior teeth.
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| Interproximal (in-tur-PROK-si-mul) space | The area between adjacent tooth surfaces.
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| Labial surface | Facial surface closest to the lips.
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| 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.
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| Line angle | Junction of two walls in a cavity preparation.
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| Lingual surface | Surface of mandibular and maxillary teeth closest to the tongue; also called palatal surface.
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| Linguoversion | Position in which the maxillary incisors are behind the mandibular incisors.
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| Malocclusion (MAL-o-kloo-zhun) | Occlusion that is deviated from a class I normal occlusion.
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| Mandibular (nam-DIB-you-ler) | The lower jaw.
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| Masticatory (MAS-ti-kuh-tor-ee) surface | The chewing surface of the teeth.
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| Maxillary (MAK-si-lar-ee) | The upper jaw.
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| Mesial surface | Surface of the tooth toward the midline.
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| Mesioclusion (MEE-zee-oe-kloo-zhun) | Term used for class III malocclusion.
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| Mesiodistal division | Lengthwise division of the crown in a mesiodistal (front-to-back) direction, consisting of the mesial third, middle third, and distal third.
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| Middle third | Division of the root in the middle.
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| 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.
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| Neutroclusion | An ideal mesiodistal relationship between the jaws and the dental arches.
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| Occlusal surface | Chewing surface of posterior teeth.
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| Occlusion (oe-KLOO-zhun) | The natural contact of the maxillary and mandibular teeth in all positions.
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| 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.
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| Palatal surface | Lingual surface of maxillary teeth.
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| Permanent dentition | The set of 32 secondary teeth.
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| Point angle | Angle formed by the junction of three surfaces.
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| Posterior |
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