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37 Cards in this Set
- Front
- Back
Where can cavities occur on the tooth?
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One of the five surfaces exposed to the oral cavity
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How can a practitioner simplify the examination and diagnosis of a patients oral condition?
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By Classifying cavities
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Why is cavity nomenclature necessary?
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To understand one another in conversing about the treatment of a patient
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How are cavities named?
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For the surfaces of the tooth in which they occur (facial, lingual, mesial, distal)
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Simple Cavity
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A cavity that involves only one surface
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Complex Cavity
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A cavity in which multiple surfaces are involved either due to decay or extension in preparation
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What is another name for a Complex Cavity?
How are these Cavities further classified? |
Compound cavity
Classified by using the First Letter of the words naming the surfaces of the tooth and writing them in capital letters |
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Define the following
O MO DO MOD F L B I |
Occlusal
Mesio-occlusal Disto-occlusal Mesio-occluso-distal Facial Lingual Buccal Incisal |
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Where are caries most frequently found?
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In the developmental pits and fissures, because they are protected areas
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What are the conditions that make pits and fissures more susceptible to decay?
What is ultimately responsible for the decay? |
They are deeper than the surrounding tooth substance and so proper cleaning is difficult.
These conditions favor bacterial growth that breaks down tooth structure. |
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Where are Pits and Fissure caries commonly found?
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(1)Occlusal surface of the premolars and molars
(2)Lingual pits of maxillary incisors (3)Facial groove and pit of the mandibular molars (4)Lingual groove and pit of the maxillary molars (5)Pits occurring in atypical areas |
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What defines a smooth surface cavity?
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They generally accompany unclean conditions on areas of the tooth that are difficult to clean
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Where are smooth surface caries found?
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(1)Proximal surfaces of all teeth
(2)Gingival one-third areas on the facial and lingual of all teeth |
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How are smooth-surface (interproximal lesions) best detected?
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Bitewing radiographs with the exception of the gingival one-third lesions
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What are the classification of cavities according to treatment sometimes referred as?
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"Blacks Classification" after GV Black
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Class 1 Cavities
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All Pit and Fissure cavities
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Where are class 1 cavities commonly found?
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Occlusal surfaces of posterior teeth, buccal and lingual surfaces of molars, and lingual surfaces of anterior teeth
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Class 2 Cavities
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All proximal surface cavities on the premolars and molars
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Where are class 2 cavities commonly found?
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Generally the occlusal surface is involved along with one or both proximal surfaces of any posterior tooth
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Class 3 Cavities
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All proximal surface cavities on the anterior teeth which do not involve the removal and restoration of the incisal angle
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Class 4 Cavities
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All the proximal surface cavities on the incisors and canines which require the removal and restoration of the incisal angle
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Class 5 Cavities
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All gingival cavities located within the gingival one third of the tooth. These may be either on the facial or lingual side
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Class 6 Cavities
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All cavities on the incisal edge of the occlusal surface where attritional wear has removed the enamel to expose the dentin
(Incisal edge or cusp tips) |
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How are the cavity walls defined in a completed cavity preparation?
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The walls take the name of the surface of the tooth toward which they face
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Pulpal Wall
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That inside wall which does not contain a cavosurface margin and covers the pulp and is in a plane at right angles to the long axis of the tooth
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Axial Wall
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The inside wall which does not have a cavosurface margin and covers the pulp and is in a plane parallel to the long axis of the tooth
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Gingival Wall
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The outside wall which has a cavosurface margin and does not cover the pulp and is in a plane at right angles to the long axis of the tooth
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What is a line angle?
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Formed where two walls of a cavity meet along a line and is named by joining the names of the walls which meet each other
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Point Angle
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formed where three walls of a cavity meet at a point and named by the joining of the names of the walls that meet to make the point
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Cavosurface Angle (Margin)
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The line formed by the junction of a cavity wall and the external surface of the tooth
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Seat or floor
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Used to describe the bottom or wall representing the deepest penetration in simple or compound cavity preparations (axial or pulpal), plus the gingival wall in compound cavity preparations
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Step
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Referred to as the geometric configuration in a compound cavity preparation composed of the pulpal axial and gingival walls
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Proximal Surface
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refers to the surface of the tooth or the portion of the cavity that is nearest to the adjacent tooth. The mesial or distal surfaces of the tooth
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Dovetail
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represents the extension of the preparation designed to create an interlock for the restorative material
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Isthmus
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Describes the narrowest portion of the dovetail
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Dentinoenamel Junction (DEJ)
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The line representing the union of the enamel and the dentin. It is used to judge the depth of the internal preparation
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Enamel Wall
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The portion of the prepared cavity wall that is enamel. It is located between the cavosurface margin and the dentinoenamel junction
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