Final Exam

Question 1

When to place indirect restorations (inlays/onlays/veneers/crowns/etc.):

Answer 1

1. when margin exceeds 2/3 the distance between the central groove and cusp tips
2. when the margin ends 1/2 distance between the central groove and cusp tips

Question 2

When to use an only instead of an inlay:

Answer 2

1. when buccal-lingual width of cavity prep is:
   - 1/2 way between the central groove and cusp tips: consider onlaying the cusp
   - 2/3 way between central groove and cusp tips: should onlay the cusp

Question 3

Inlay dimension:

Answer 3

1) isthmus must be atleast 2.0 mm wide and diverge
2) facial, lingual, and gingival margins must have clearance of atleast 0.5mm

Question 4

Principles of gold onlays:

A) ___ bevel of ___ mm on cusps of ___ occlusion

B) ____ mm on cusp of ____ occlusion

C) Gold onlay- ____ reduction on functional cusp and ____ reduction on non-functional cusp

Answer 4

A) reverse bevel; 1-2mm; supporting

B) 0.5mm; non-supporting

C) 1.5 mm; 1.0 mm

Question 5

Wears the opposing teeth the most and has the highest resistance to wear:

Answer 5

porcelain

Question 6

List the following materials in order of most to least wear on opposing dentition:

• direct resin composites
• porcelain
• lab processed composites

Answer 6

1. porcelain
2. lab processed composites
3. direct resin composites

Question 7

Describe the reduction needed for a porcelain onlay:

Answer 7

functional cusp: 2.0 mm
non-functional cusp: 1.5 mm

Question 8

Describe the reduction needed for a gold onlay:

Answer 8

functional cusp: 1.5 mm
non-functional cusp: 1.0 mm

Question 9

T/F: there should be NO bevel on porcelain margins

Answer 9

True

Question 10

When considering a provisional, use a ____ cement.

Answer 10

eugenol-free

Question 11

____ will interfere with bonding with a provisional

Answer 11

eugenol

Question 12

If you must use eugenol when doing a provisional, you should:

Answer 12

pumice the tooth well to remove eugenol

Question 13

____ prep is needed for porcelain veneers

Answer 13

minimal

Question 14

When preparing for porcelain veneers, try to keep the prep within ____ for ____

Answer 14

enamel for optimal bond strength

Question 15

What is the minimum depth that pins go into the dentin?

Answer 15

0.5 mm

Question 16

Why don’t you want a pin on the mid mesial of #5?

Answer 16

concavity of the root

Question 17

Why do you use increments when using composite?

Answer 17

to minimize polymerization stress

Question 18

Dentist restores a lesion with resin infiltration by:

Answer 18

etch only

Question 19

With two adjacent preps…

Answer 19

you should prep the largest first, but restore the smallest first

Question 20

What bacteria is found in advanced dental caries?

Answer 20

Lactobacilli

Question 21

0.5 mm dentin between the pulp and restoration, what should be used?

Answer 21

CaOH liner then RMGI

Question 22

What does the oxygen inhibited layer do?

Answer 22

allows for wetablilty and allows adding more composite

Question 23

1 mm above crestal bone you want to use:

Answer 23

amalgam

Question 24

What is the minimum depth that pins must go into the dentin?

Answer 24

2 mm

Question 25

Why wouldn't you use a pin on the mid mesial of #5?

Answer 25

concavity of the root

Question 26

Why do you place composite in increments?

Answer 26

to minimize polymerization stress

Question 27

Dentist restores a lesion with resin infiltration by:

Answer 27

etch only

Question 28

If you have two adjacent preps/restorations, you should:

Answer 28

prep largest first but restore smallest first

Question 29

What type of bacteria is found in advanced dental caries?

Answer 29

lactobacilli

Question 30

If you only have 0.5 mm of dentin between the pulp and restoration you should use:

Answer 30

CaOH liner (dycal or life) and then RMGI (vitrebond)

Question 31

Increases wetbablity and allows adding more composite:

Answer 31

oxygen inhibited layer

Question 32

If you are 1mm above crestal bone you want to use:

Answer 32

amalgam

Question 33

The least desirable finish for porcelain veneer is

Answer 33

(maybe lingual something)

Question 34

Pins increase which of the following?

Answer 34

retention

Question 35

Emax is also known as:

Answer 35

lithium discilcate

Question 36

T/F: MO #3 gold onlay always break mesial proximal contact:

Answer 36

???

Question 37

What does adding more filler do?

Answer 37

increases strength

Question 38

Textbook author:

Answer 38

Dr. Sturdevant

Question 39

Demineralization of occurs at pH:

Answer 39

4.5

Question 40

Patient comes in with sensitivity and you had a and you have done a class V the day before and margins are sealed:

Answer 40

dentin tubules exposed during polishing

Question 41

Patient comes in with a small DO what do you recommend ad why?

Answer 41

composite to conserve tooth structure

Question 42

What increases surface area for bonding?

Answer 42

???

Question 43

Which of the following determines the success of a class II restoration?

Answer 43

moisture control

Question 44

Which liner do you use if your class II went too deep?

Answer 44

vitrebond

Question 45

Which of the following is most damaging to the periodontium?

Answer 45

overcountouring of a class V

Question 46

To increase dentin bonding you would use:

Answer 46

35% phosphoric acid

Question 47

Where does adjeasibe bond best?

Answer 47

intertubular dentin

Question 48

What tooth # would have pulp exposure if prepared perpendicular to long axis of tooth?

Answer 48

28

Question 49

Highest bonds achieved on enamel etching?

Answer 49

type I honeycomb

Question 50

From occlusal view, axial wall I class I prep looks:

Answer 50

convex

Question 51

Unfilled resorption is caused by:

Answer 51

overreaching

Question 52

Dr. Murphy likes to use what for class III with inflammation?

Answer 52

tofflemeyer

Question 53

What preparation would you use for a typical chipped front tooth

Answer 53

Class IV

Question 54

What type of prep would be used for a carious lesion in the gingival 1/3 of the tooth?

Answer 54

class V

Question 55

When do we not bevel in a class V preparation?

Answer 55

when we are below the CEJ

Question 56

Flexure and fatigue of enamel and dentin, caused by occlusal forces:

Answer 56

abfraction

Question 57

Feldspathic porcelain examples:

Answer 57

Vita and sirona blocks (tied)

Question 58

Leucite reinforced example:

Answer 58

IPS Empress (tied)

Question 59

Lithium discilicate example:

Answer 59

E MAX (tied)

Question 60

Should teeth whitening be done before or after veneer placement?

Answer 60

before!

Question 61

Where can you NOT put veneers?

Answer 61

highly fluorinated teeth or primary teeth

Question 62

With direct composite veneers what polishes best?

Answer 62

microfill composite resin

Question 63

What would you use for a class II Sub-G with bleeding?

Answer 63

tofflemire

Question 64

Which of the following should you NEVER bevel at the gingival margin?

Answer 64

porcelain inlay

Question 65

What is the LEAST desirable finish for a porcelain veneer?

Answer 65

lingual with feathered edge

Question 66

What is the single best risk factor for caries?

Answer 66

current caries

Question 67

What hypothesis do we currently believe?

Answer 67

specific plaque hypothesis

Question 68

What is the best prevention for pit and fissure caries?

Answer 68

fluoride and sealants

Question 69

Enamel dimineralization occurs at what pH?

Answer 69

5.5

Question 70

Dentin demineralization occurs at what pH?

Answer 70

6.2

Question 71

describe the progression of caries at the smooth surface: Describe the progression of caries at the root surface:

Answer 71

slow; fast (because of dentin)

Question 72

Put the following in order: - pummice - shade selection - rubber dam - etch

Answer 72

1. shade selection 2. pummice 3. rubber dam 4. etch

Question 73

What should be done if the prep exceeds 2/3 distance between central groove and cusp?

Answer 73

onlay

Question 74

Material to be used to build up on top of a a pin that is 1 mm above the alveolar crest

Answer 74

amalgam

Question 75

You would find the unbeveled sides in a class II prep at the enamel rods at the ___. The highest bond strength is at enamel ___.

Answer 75

sides; ends

Question 76

Check occlusion before you prep. Check occlusion after restoration is completed.

Answer 76

both statements true

Question 77

least common finish line for porcelain veneers:

Answer 77

supragingival

Question 78

Why do you do dovetails for inlays?

Answer 78

prevents proximal dispalcement

Question 79

What is true about dentin and what we want to bond to it:

Answer 79

dentin with sound collagen fibrils

Question 80

What is in your saliva that helps remineralization?

Answer 80

phosphate