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37 Cards in this Set

  • Front
  • Back
Where can cavities occur on the tooth?
One of the five surfaces exposed to the oral cavity
How can a practitioner simplify the examination and diagnosis of a patients oral condition?
By Classifying cavities
Why is cavity nomenclature necessary?
To understand one another in conversing about the treatment of a patient
How are cavities named?
For the surfaces of the tooth in which they occur (facial, lingual, mesial, distal)
Simple Cavity
A cavity that involves only one surface
Complex Cavity
A cavity in which multiple surfaces are involved either due to decay or extension in preparation
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
Define the following

O
MO
DO
MOD
F
L
B
I
Occlusal
Mesio-occlusal
Disto-occlusal
Mesio-occluso-distal
Facial
Lingual
Buccal
Incisal
Where are caries most frequently found?
In the developmental pits and fissures, because they are protected areas
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.
Where are Pits and Fissure caries commonly found?
(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
What defines a smooth surface cavity?
They generally accompany unclean conditions on areas of the tooth that are difficult to clean
Where are smooth surface caries found?
(1)Proximal surfaces of all teeth
(2)Gingival one-third areas on the facial and lingual of all teeth
How are smooth-surface (interproximal lesions) best detected?
Bitewing radiographs with the exception of the gingival one-third lesions
What are the classification of cavities according to treatment sometimes referred as?
"Blacks Classification" after GV Black
Class 1 Cavities
All Pit and Fissure cavities
Where are class 1 cavities commonly found?
Occlusal surfaces of posterior teeth, buccal and lingual surfaces of molars, and lingual surfaces of anterior teeth
Class 2 Cavities
All proximal surface cavities on the premolars and molars
Where are class 2 cavities commonly found?
Generally the occlusal surface is involved along with one or both proximal surfaces of any posterior tooth
Class 3 Cavities
All proximal surface cavities on the anterior teeth which do not involve the removal and restoration of the incisal angle
Class 4 Cavities
All the proximal surface cavities on the incisors and canines which require the removal and restoration of the incisal angle
Class 5 Cavities
All gingival cavities located within the gingival one third of the tooth. These may be either on the facial or lingual side
Class 6 Cavities
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)
How are the cavity walls defined in a completed cavity preparation?
The walls take the name of the surface of the tooth toward which they face
Pulpal Wall
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
Axial Wall
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
Gingival Wall
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
What is a line angle?
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
Point Angle
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
Cavosurface Angle (Margin)
The line formed by the junction of a cavity wall and the external surface of the tooth
Seat or floor
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
Step
Referred to as the geometric configuration in a compound cavity preparation composed of the pulpal axial and gingival walls
Proximal Surface
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
Dovetail
represents the extension of the preparation designed to create an interlock for the restorative material
Isthmus
Describes the narrowest portion of the dovetail
Dentinoenamel Junction (DEJ)
The line representing the union of the enamel and the dentin. It is used to judge the depth of the internal preparation
Enamel Wall
The portion of the prepared cavity wall that is enamel. It is located between the cavosurface margin and the dentinoenamel junction