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Principles of Operative Dent Flashcards

1
Q

Treatment of disease/defects of hard tissues of teeth that DO NOT REQUIRE FULL COVERAGE RESTORATION; Restores FORM, FUNCTION, and ESTHETICS

A

Operative Dentistry

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2
Q

Thickness of _____ varies by location and tooth type

A

Enamel

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3
Q

_____ have larger diameter near the surface and smaller near dentin borders; run perpendicular to long axis

A

Enamel rods

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4
Q

T/F: DO NOT LEAVE UNSUPPORTED ENAMEL

A

True

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5
Q

Can act as food/bacterial trap; Lead to decay

A

Fissures

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6
Q

______ are hypomineralized that extend into enamel

A

Enamel tufts

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7
Q

____ are thin faults between enamel rod groups that extend from enamel toward DEJ

A

Enamel lamellae

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8
Q

_____ are odontoblastic process crossed into enamel

A

Enamel spindles

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9
Q

Enamel is ____ soluble as you approach the DEJ

A

More soluble

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10
Q

_______ is Largest Portion of tooth, Forms walls of pulp chamber, Formed immediately prior to enamel, DEJ->pulp, Dentin formation continues throughout the life of the pulp, and Located in both coronal and root portions of tooth

A

Dentin

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11
Q

Dentinal tubules are lined with _______

A

peritubular dentin

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12
Q

Canals extending from DEJ/DCJ to pulp, Lined with peritubular dentin, Intertubular dentin, Diameter of tubules largest at pulp, Number of tubules/square mm greatest at pulp

A

Dentinal tubules

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13
Q

_____ are formed from secondary odontoblasts that respond to moderate irritant

A

Reparative dentin

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14
Q

Primary dentin that has changed (become more calcified); peritubular dentin widens and fills with calcified material

A

Sclerotic dentin

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15
Q

Fluid movement in the dentinal tubules causes _____

A

dentinal sensitivity (pain)

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16
Q

Hardness averages 1/5 that of enamel, Harder near DEJ than near pulp (3x), and 50% hydroxyapatite

A

Dentin

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17
Q

Odontoblastic process wrapped in nerves and fluid in dentinal tubules and Enamel/cementum removed during preparation= seal is lost Causing small fluid movements in tubules= distortions in nerve endings leading to pain

A

Hydrodynamic Theory of Pain Transmission◦

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18
Q

_____ is created whenever dentin is cut

A

Smear layer

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19
Q

____ is Gray, semi-translucent, Color depends on underlying dentin, Becomes temporarily whiter when dehydrated, and Shiny

A

Enamel

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20
Q

_____ is Yellow-white, Dull, opaque

A

Dentin

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21
Q

_____ is Softer than dentin and Formed continually

A

Cementum

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22
Q

Remove defects, Provide necessary protection to pulp, Extend restoration as conservatively as possible, Resist fracture when chewing, and Restore esthetics and function are objectives of _____

A

tooth preparation

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23
Q

T/F: In tooth prep, extend to sound tooth structure in all directions

A

True

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24
Q

Prep walls are designed to _____ restoration and ______ fracture

A

Retain restoration and resist fracture

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25
____ is used to Remove remaining caries or old restorative material, Protect pulp, Minimize fracture, maximize retention, Finish walls and margins, and Final cleaning, inspection, sealing prep
Tooth prep
26
______ is a factor to consider in tooth prep including Enamel Rod orientation, Thickness of enamel and dentin, Size, location of pulp, Relationship of tooth to periodontium
Dental Anatomy
27
In operative dentistry, the goal is to ____ damage but _____ vitality
repair damage but preserve vitality
28
What are the 3 locations of primary caries?
Pit and fissure, enamel smooth surface, and root surface
29
_____ are caries left by the operator either intentionally or accidentally
Residual caries
30
Residual caries is not accepted when left at ____ or on prepped ____ tooth wall
DEJ or prepped enamel tooth wall
31
microleakage present at the junction between restoration and tooth may progress under the restoration or behind it so it cannot be seen with a radiograph
Recurrent caries
32
Formed by odontoblasts at end of tubules at surface of pulp In response to irritation
Reparative dentin
33
____ caries are rampant and are light colored
Acute caries
34
___ caries are slow or arrested with a dark color
Chronic caries
35
One tooth surface involved
Simple
36
2 surfaces of tooth involved
Compound
37
Three or more tooth surfaces involved
Complex
38
____ wall of a tooth prep is an internal wall that is parallel to the long axis of the tooth
Axial wall
39
____ wall of a tooth prep is an internal wall that is perpendicular to the long axis of the tooth; closest to pulp
pulpal wall or floor
40
_____ and _____ floors/walls provide stabilizing seats for restoration and distribute stresses in tooth
Pulpal and gingival floors/walls
41
Where do you want the forces to be directed on the tooth?
along the long axis of the tooth
42
Junction of two walls/surfaces along a line
Line Angle
43
Junction of three surfaces
Point angle
44
Junction of PREPARED cavity wall and EXTERNAL surface of tooth
CAVOSURFACE angle or margin
45
_____ is Formed by full length enamel rods; Enamel rods’ inner ends are on sound dentin
Enamel Margin Strength
46
When enamel rods are not supported by sound dentin, should you do? Why?
Remove from preparation bc Brittle, fracture easily
47
Class of tooth prep involving occlusal surface
Class I
48
Class of tooth prep involving proximal surfaces of premolars and molars
Class II
49
Class of tooth prep involving proximal surfaces of incisors and canines that don't involve incisal edge
Class III
50
Class of tooth prep involving proximal surfaces of incisors and canines that involve incisal edge
Class IV
51
Class of tooth prep involving gingival 1/3 of smooth surfaces
Class V
52
Class of tooth prep involving incisal edge or cusp
Class VI
53
____ refers to resistance to fracture
Resistance
54
____ refers to the restoration staying in place
Retention
55
_____ refers to the ability to access the area
Convenience
56
Outline Form, Initial depth, Primary resistance form, Primary retention form, and Convenience form are part of the ____ stage
Initial stage
57
Remove shallow enamel fissure or pit; Creates smooth, saucer shaped surface= self-cleansing; NO MORE THAN 1/3 ENAMEL THICKNESS REMOVED
Enameloplasty
58
When margin exceeds 2/3 of the distance between central groove and cusp tip, ____________
MUST CAP WEAK CUSPS
59
When margins end ½ distance between central groove and cusp tip, ______________
CONSIDER CAPPING WEAK CUSPS
60
Floors of tooth preps should always be _____
Flat
61
Should there be any sharp areas of tooth prep?
No
62
T/F: You must allow for sufficient thickness off restorative material
True
63
____ refers to resistance to fracture
Resistance form
64
____ prevents tipping and proximal displacement
Dovetail
65
_____ resists pull of sticky foods in regard to tooth preps
Wall length
66
_____ use micromechanical retention between adhesive and tooth
Bonded restoration
67
____ dentin is demineralized, usually discolored but not soft; ok to leave
Affected dentin
68
____ dentin is soft, contains microorganisms, may or may not be stained, must remove
Infected dentin
69
____ position should be used to access Buccal sides of patient’s UL and Lingual sides of patient’s LR
8:00 position
70
____ position should be used to access Buccal sides of patient’s UR and Lingual sides of patient’s LL
11:00 position
71
____ position should be used to access Buccal sides of patient’s R and L anterior and Lingual sides of patient’s R and L anterior
12-1 position

Operative (12 decks)

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