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24 Cards in this Set
- Front
- Back
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What are the different characters of occlusal contacts in the unworn dental arch?
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Point-to-point
Point-to-area Edge-to-edge Edge-to-area |
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What happens to the occlusal contacts in Bruxism?
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Results in non-physiological area-to-area contacts
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Why does the character of occlusal contacts make chewing easier to perform?
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There are abundant food spillways on the occlusal table.
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All posterior teeth have proximal contacts where?
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Middle third
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Which teeth have more incisal/occlusal contacts, Ant. or post.?
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Ant. teeth
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Which surface of any tooth has contacts that are more incisal/occlusal?
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Mesial surface
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Contact areas between posterior teeth aid in _____ _____ _____ _____. These contact areas create wear patterns that will eventually cause what?
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Preventing mesial drift
Reduced interproximal embrasure areas |
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Contact surface areas increase with age as a _____ _____ _____ _____.
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Result of proximal attrition
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What is the summary of contacts for max. teeth?
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IJ,JM,JM,MM,MM,MM,MM,M
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What is the summary of contacts for mand. teeth?
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II,II,IM,MM,MM,MM,MM,M
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What do all teeth have in common?
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Facial height of contour located in the cervical third
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An imaginary curved line encircling a tooth at its greatest bulge or circumference
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Height of Contour (Crest of Curvature)
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What are the functions of the height of contour?
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Forms the contact area on the mesial and distal surfaces
protects the gingiva surrounding the tooth |
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Where is the height of contour on the lingual surface of all maxillary and mandibular posterior teeth?
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Middle third
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Where can you find the heights of contour to be in the cervical third of the crown?
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Facial surfaces of all teeth
Lingual surfaces of all anterior teeth (cingulum) |
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Which three mandibular teeth are so aligned that when viewed from the occlusal, a straight line may be drawn that will bisect all contact areas?
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Second pre-molar, first molar, second molar
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All teeth have a greater proximal cervical line curvature on what surface?
mesial or distal |
Mesial surface
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The proximal cervical line curvatures are greater on which teeth?
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Incisors (max. Cental mesial surface is the greatest)
gets smaller as you move distally towards the third molar |
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Which way does the CEJ curve facio-lingually?
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Towards the apex
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Which way does the CEJ curve mesiodistally?
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Away from the apex
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What separates the enamel of the anatomic crown from the cementum of the anatomic root?
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CEJ
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Where are contact areas observed for posterior teeth when viewed from the occlusal in the buccal-lingual direction?
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Slightly buccal of the middle third
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Where are contact areas observed for anterior teeth when viewed from the occlusal in the buccal-lingual direction?
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Middle third
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What is the only tooth to have the mesial and distal contacts at exactly the same height when viewed from the incisocervical or occlusocervical dimension?
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Mandibular central incisor
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