Ideal Class II Preps, Bases, and Liners Flashcards Preview

SP 16 - Operative final > Ideal Class II Preps, Bases, and Liners > Flashcards

Flashcards in Ideal Class II Preps, Bases, and Liners Deck (38)
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1

What is done in the initial stage of prep design?

Outline form and initial depth
Resistance form
Retention form
Convenience form

2

What is done in the final stage of prep design?

Removal of any remaining enamel pits and fissures, infected dentin, or old restoration
Pulp Protection
Secondary retention and resistance form
Finish enamel walls
Cleaning, inspecting, conditioning

3

Resistance form definition

Shape and placement of the cavity walls that enable the tooth to withstand forces in teh long axis of the tooth

4

Retention form definition

Shape or form that resists the displacement/removal of the restoration from tipping or lifting forces

5

Convenience form definition

The shape or form that makes prepping the cavity (observing and accessing) the easiest

6

What are the functions of the of the Dentin-Pulpal complex?

Formative - 1' and 2' dentin
Defensive - repairative dentin
Nutritive - supplies vital cells
Sensory - protective

7

T/F - The only sense to stimuli the Dentin-Pulpal complex recognizes is pain

True

8

Describe the Hydrodynamic Theory of Pain

Micromovement of fluid in tubules affect nerves
Can sense osmolarity, thermal, and pressure changes, dessication, and high-speed cutting

9

What are the three Pulp Statuses that are diagnosed?

Vital
Pulpitis (reversible and irriversible)
Necrotic

10

What are the ways to diagnose pulpitis?

Patient symptoms
Radiographic
Clinical tests

11

What are the characteristics of tooth pain we should ask about?

Intensity
Location
Cause of onset
Duration
Painful when patient bites?

12

What are the clinical methods to test pulp status?

Hot/Cold
Electric Pulp Test
Percussion test

13

What is one of the most common forms of tooth pain?

Pulpitis

14

What is the hallmark sign of Irreversible pulpitis?

Sensitivity to heat and not cold

15

What is the sign of necrotic pulp?

No response to stimuli

16

Why do we use liners and bases?

To protect the pulp from and minimize post-op sensitivity
Acts as a chemical, thermal, electrical, mechanical, barrier
Controls inflammation of pulp
Controls fluid movements

17

Liner definition

Relatively thin layers of material used primarily to provide a barrier to protect dentin from fluids and residual reactants of the restoration
They contribute to the initial electrical insulation, generate thermal proteciton, and provide pulp Tx

18

What are the different types of Liners?

Solution Liners
Suspension Liners
Cement Liners
Eugenol Liners

19

Solution Liners

2-5 um
Name = Copal Varnish
Adhesives

20

Suspension Liners

20-25 um
Name = CaOH2
Trade name = Dycal

21

Cement Liners

200-1000 um
Name = GI
Trade name = KetacCem

22

Eugenol Liners

Name = ZOE and B&T
Trade name = ZOE and B&T

23

Base definition

Provides thermal protection and to supplement mechanical support for the restoration by distributing local stresses from the restoration across the underlying dentinal surface
Provides thermal protection of pulp
Provides mechanical retention for the restoration

24

What is considered 'Mild caries'?

Remaining Dentin Thickness >2.0mm

25

How do we treat Mild caries?

Line with copal varnish and fill with Amalgam

26

What are the different types of Bases?

ZnPo4 cement
ZOE reinforced cement
Polycarboxylate cement
GI cement
RMGI (most common)

27

What is considered 'Moderate Caries'?

0.5-2.0 Root dentin thickness
Ideal prep does not remove all caries

28

How do we treat Moderate Caries?

Extend prep laterally until DEJ is noncarious
Remove carious dentin
Line with copal adhesive and fill with amalgam

29

Wha is considered Severe Caries?

30

What do we need to do when treating severe caries?

Pulp cap