Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Basic Info > Operative dentistry > Flashcards

Operative dentistry Flashcards

1
Q

Enamel thickness for dogs and cats

A

Dog .3-.6mm
Cats .1-.3mm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How many dentin tubules are present

A

JVD 2010- 75,000
Wiggs - 29,000-52,000

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What happens when dentinal tubules are exposed

A

Pain is caused by rapid outflow of fluid
Outward - cold
Inward - hot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the difference between C and A delta fibers

A

A delta = myelinated, larger, rapid pain
C type = smaller, unmyelinated, slow dull pain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the two types of tertiary dentin

A

Reactionary - formed from pre existing odontoblast
Reparative - formed from new odontoblasts due to death of original

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Tertiary dentin

A

Rapidly irregular deposited dentin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Sclerotic dentin

A

Highly mineralized and occurs when odontoblasts are lost leaving a dead tract
Difficult to bond

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the 3 types of cavity classes

A

Simple - 1 tooth
Compound - 2 teeth
Complex - 3+ teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Class 1 cavity

A

I,PM,M
Pit/fissure commonly found on occlusal surfaces

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Class 2 cavity

A

PM/M
Proximal surface of caudal teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Class 3 Cavity

A

I/C
Proximal surfaces of rostral teeth without incisive involvement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Class 4 cavity

A

I/C
proximal surface of rostral teeth with incisive involvement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Class 5 cavity

A

I/C/PM/M
Gingival 3rd surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Class VI cavity

A

I/C/PM/M
defect of the incisal edge or cusp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Stress vs Strain

A

Stress- When a force acts on a constrained body, the body resists the force.
Strain- is described as the change in length (ΔL = L − Lo) per original length (Lo) of the body when it is subjected to a load.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Wetability and appropriate angle

A

Surface wettability, which is characterized by the contact angles of a water droplet on a solid surface, is used to describe the ability of a water droplet in maintaining contact with the solid surface. It is also used to indicate the water repellency of the surface.
Angle = 0

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Ideal properties of restoration

A

Good esthetics
Biocompatible
Not dissolve in oral fluids
Strength and modulus similar to tooth
Good abrasive/wear resistance
Coefficient of thermal expansion similar to tooth
Minimal dimensional changes with setting
High polishability
Radiopaque
Adhere to tooth structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Common restoration materials

A

*Composites
*Glass Ionomer Cements (GICs)
*Resin Modified Glass Ionomer Cements (RMGICs)
*Amalgam
*Compomers
*Giomers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are the four major components of composite resin

A

Inorganic filler - quartz/glass
Organic resins - glue
Coupling agent - link
Initiator - accelerator

20
Q

What is the main component of fillers

A

Quartz/silica
**increased amt of filler increases the strength and reduces polymerization

21
Q

CR organic resins are

A

Methacrylates
**Bisphenol A glycidyl methacrylate (bis-GMA)
**Triethylene glycol dimethacrylate (TEGDMA)
**Urethane dimethacrylate (UDMA)
Silorane
**epoxy

22
Q

What are the disadvantage of methacrylates

A

polymerization shrinkage
Micro-leakage

23
Q

Silane is commonly used for as?

A

Coupling agent

24
Q

What are the 3 types of initiator types

A

Chemical
Light activation
Dual (self/light)

25
Q

Benzoyl peroxide is what kind of initiator

A

chemical

26
Q

Camphoroquinone is what type of initiator

A

Visible light (460-480)

27
Q

Benzoin methyl ether is what type of initiator

A

UV light cured (365)

28
Q

What are the 6 types of composite classification

A

Macrofilled
Microfilled
Hybrid
Nanofills
Nanohybrid
Flowable

29
Q

What type of composite is recommended for type III/V cavity restoration

A

Macro/micro

30
Q

What are the four types of fluoride releasing materials

A

**Resin composites–Better mechanical properties, wear, least fluoride
**Conventional GI–Thermal expansion coefficient similar to tooth, lower wear resistance, high fluoride release
**RMGI–Prone to abrasion, decreased flexural strength, should not be used in occlusal load-bearing areas
**Compomers–More resin than RMGI
Better mechanical properties like resin composites
Moderate fluoride release

31
Q

Acid etch is made of what

A

phosphoric acid 35-38%
30 sec = enamel
15 sec = dentin

32
Q

What generation is etching required for bonding

A

4th = multiple bottle
5th = single bottle

33
Q

What generation of bonding does not require etch

A

6th = 2 bottle
7th = 1 bottle

34
Q

What are the 8 steps to cavity prep.

A

Outline form
Resistance form
Retention form
Pathology removal form
Wall Form
Preparation cleansing form
Margin placement
Pulpal protection

35
Q

What class of cavity is amalgam recommended for

A

Class 1

36
Q

What type of restoration requires beveling

A

Class III-VI
**not Class V if near CEJ

37
Q

What is the difference between ferrous and non-ferrous metal

A

Ferrous–iron/steel

Non-Ferrous –Noble (gold, platinum, palladium, iridium, rhodium, ruthenium, and osmium)

38
Q

What is the difference between precious metals vs alloy

A

Precious = noble + silver
Alloy = combination of several metals

39
Q

What is a luting agent

A

dental cement connecting the underlying tooth to a fixed prosthesis

40
Q

What is the difference between resistance and retention

A

**Retention- ability to be retained when subjected to tensile forces along the long axis of the tooth preparation
**Resistance- ability to resist dislodgement when apical or oblique forces are applied

41
Q

Convergence angle PM4

A

43

42
Q

Convergence angle MN M1

A

36

43
Q

Ideal convergence angle

A

12

44
Q

Cast vs die

A

Cast - stone positive reproduction model involving large area of oral tissues
Die - same as cast but only a single tooth is replicated

45
Q

What do liners do

A

zinc oxide or calcium hydroxide that can be applied to help protect the pulp
**can use GIC, RMGIC

46
Q
A

Basic Info (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions