Operative Final Review Based On Her Outline

Question 1

When Isolating with a rubber dam on a Class II Prep, how do you set the dam?

Answer 1

Class II= one tooth posterior, two teeth anterior to tooth you’re working on

Question 2

Where do the retention grooves go on an Amalgam Class II restoration?

Answer 2

Line Angles in the box

Question 3

What is so IMPORTANT ABOUT MARGINAL RIDDGE WITH THE CLASS II AMALGAM?

Answer 3

equal height of the adjacent tooth and rounded.

Question 4

the ____ Prep is used for the following reasons:

• Root surface caries -When you can access without approaching from occlusal
• lesion is below contact
• similar to a Class III (access from facial or lingual)

Answer 4

Slot Prep

Question 5

Preparations deeper than normal with LESS THAN 1.0mm dentin between the pulp and the restorative material= use _____ _____

Answer 5

RMGI liner

Question 6

Preparations with ___ ____ 0.5mm of dentin between the pulp and restorative material= use thin layer of calcium hydroxide followed by a later of RMGI

Answer 6

LESS THAN

Question 7

Preparations with a direct pulp exposure on vital pulp=____ mm thick calcium hydroxide layer followed by layer of RMGI

Answer 7

0.5mm`

Question 8

What are the Indications for Composite

Answer 8

Esthetics
Light occlusal contacts
Smaller restorations
Isolation

Question 9

Highest composite bonding strength in_____ third

Answer 9

occlusal

Question 10

Lowest composite bonding Strength in_____ third

Answer 10

cervical

Question 11

Stiffness of a material

Answer 11

Modulus of Elasticity

Question 12

A high modulus of elasticity = _____

Answer 12

ridid

Question 13

A low mod of Elast =

Answer 13

flexible

Question 14

What is the name of this conservative technique where:

◦ Place composite in carious occlusal pits
◦ Seal remaining pits and fissures

Answer 14

Preventative Resin Restoration

Question 15

For a posterior composite filling, one would opt for a composite with _____ filler. (greater or less).

Answer 15

greater filler

Question 16

t/f: More filler= more strength =less esthetic

Answer 16

true

Question 17

Which type of composite has larger particles. greater ability to handle stress, and rought texture

Answer 17

macrofill

Question 18

Which Composite has small particles, smooth surface texture, less filler, and greater wear resistance.

Answer 18

Microfill

Question 19

Which types of composite is most commonly used?

Answer 19

nanofill

Question 20

Do you select the shade of composite before or after placing the rubber dam?

Answer 20

before

Question 21

Where is it acceptable to leave unsupported enamel on the class III prep?

Answer 21

facial wall

Question 22

Where are the caries most often located on class III?

Answer 22

◦ Usually more lingual than facial

◦ Gingival to contact area

Question 23

t/f: The outline form of a Class III Preparation is perpendicular to the LA of tooth.

Answer 23

true

Question 24

For Class III Prep on Max Central
what is the inciso-gingval length

What is the Mesial distal width

Answer 24

inciso-gingval length:
2.0 on maxillary central

Mesial distal width
1.5 on maxillary central

Question 25

For Class III Prep on Max Lateral what is the inciso-gingval length What is the Mesial distal width

Answer 25

I-G length 1.5 on maxillary lateral M-D Width 1.0 on maxillary lateral

Question 26

Where is retention placed in Class III preps?

Answer 26

dentin Do we need to state what walls?

Question 27

Place a ___ mm bevel around the prep on Class III.

Answer 27

1.0 mm

Question 28

t/f: Silane is the coupling agent that allows stress transfer from flexible matrix to higher modulus (aka less flexible) filler particle.

Answer 28

True

Question 29

t/f: Cover very deep dentin with liner | ◦ CaOH or Glass Ionomer

Answer 29

ture

Question 30

How long do you etch enamel vs. dentin in the total etch system?

Answer 30

◦ enamel for 20-30 seconds ◦ dentin for 15 seconds. ◦ Apply etchant to enamel first; 15 seconds later apply it to the dentin then wash off the enamel and dentin at the same time.

Question 31

t/f: Chemical Bonding is Very limited with dissimilar materials

Answer 31

true

Question 32

t/f: the enamel bonding mechanism is the following: In enamel- interlocking with etched enamel rods

Answer 32

true

Question 33

the dentin bonding mechanism is the following: In dentin- interlocking with etched dentin collagen

Answer 33

true true true

Question 34

_________ oriented enamel ◦ Cavosurface margins of class I preparations ◦ Bevels of class II preparations ◦ ENDS of enamel rods

Answer 34

PERPENDICULAR

Question 35

________ oriented enamel ◦ Internal walls of occlusal preparations ◦ Gingival floor of box of class II preparations ◦ SIDES of enamel rods

Answer 35

PARALLEL

Question 36

t/f: Deeper dentin: more fluid, more & wider tubules, & less intertubular dentin than superficial dentin. This makes bonding more challenging.

Answer 36

true

Question 37

The smear layer is attracted to the tooth through which type of forces.

Answer 37

Van Der Waals.

Question 38

bonding with dentin collagen and ends of enamel rods are examples of what type of force?

Answer 38

micromechanical

Question 39

The composite and bond interaction is which force?

Answer 39

chemical

Question 40

t/f: etching and beveling (enamel only) increases the surface area of bodning.

Answer 40

true

Question 41

When bonding in dentins is it good for the dentin to be moist?

Answer 41

yes: Moist is better! ◦ Overwet: Resin doesn’t penetrate well Decreased bond strength ◦ Collagen fibers collapse in dry dentin Resin cannot penetrate Poor hybrid layer Decreased bond strength

Question 42

______ Etch Systems Advantages ◦ More predictable, stronger bond ◦ Enamel adequately prepared Disadvantages ◦ Collagen collapse is possible* ◦ Etched zone is often deeper than hybrid layer ◦ Exposed demineralized, collagen fibrils ◦ Post-operative sensitivity

Answer 42

Total Etch system

Question 43

_____ -etch Systems Advantages ◦ No separate etch: overdried, collapsed demineralized collagen not a problem ◦ Etched zone and hybrid layer comparable width; however, some exposed collagen ◦ Low post-operative sensitivity ' ◦ Time efficiency ``` Disadvantages ◦ Not compatible with self-cure, dual-cure composite ◦ Acidic monomers, low pH, “kills” the basic amine activator ◦ Will not etch unprepared enamel ◦ Self-etch primer systems ◦ Long-term bond strength? ◦ Self-etch adhesives (all-in-one) ◦ Lower bond strength ◦ Long-term breakdown? ◦ Collagen degradation over time ```

Answer 43

Selfetch Systems

Question 44

Which Pin is this? ◦ Pin hole larger than pin (0.001 - 0.002" larger than pin) ◦ Cemented with zinc phosphate cement ◦ Pin must be 3-4mm in length for adequate retention ◦ Least retentive of available pins

Answer 44

Cemented

Question 45

◦ Pin hole is 0.001" smaller than the pin ◦ Pin is tapped to place - resiliency of dentine retains pin ◦ 2-4mm long pin hole ◦ 2-3 times as retentive as cemented pins ◦ Dentin exhibits signs of stress

Answer 45

Friction Lock

Question 46

Pin hole is 0.002" smaller than pin Pins self threads into dentin ◦ Use hand wrench or ◦ Latch grip on slow speed 5-6 times as retentive as the cemented pin High crestal and apical stresses; Crazing and microleakage ◦ Greater stresses in dentin There should be at least 1.0 mm dentin around pin hole Used at UMKC most frequently

Answer 46

Self-threading.

Question 47

t/f: Pins should be placed 5mm apart from each other, but at lease a MINIMUM of 3 mm apart

Answer 47

true

Question 48

t/f: Pins should be 1mm from wall of prep | but at least a MINIMUM 0.5mm from wall

Answer 48

true

Question 49

Pin should be__ mm deep into the dentin

Answer 49

2mm

Question 50

What factors affect the Pin's retention capabilities?

Answer 50

- depth: 2 mm - distance from walls and enamel: 0.5 to 1 mm - Vertifcal orient: along LA of tooth - # of pins: up to a limit - diameter of pin= greater diameter = retention.

Question 51

t/f: Aluminum shank on twist drill acts as a heat absorber

Answer 51

true

Question 52

Please consider all of the following when placing ____. Pulpal anatomy External tooth anatomy Age (old =brittle) (young= large pulp)

Answer 52

pins

Question 53

t/f: Best site for placement are at the line angles (DF, DL, MF, ML) with one pin per cusp.

Answer 53

true

Question 54

this area is a risk for what? Mesio facial corner of Max and Mand 1st molar

Answer 54

Pulp exopse

Question 55

this area is a risk for what? Distal mand molars and max lingual of molars

Answer 55

pulp expose

Question 56

this area is a risk for what? Mid-facial, mid-mesial and mid-distal furcations of Max 1st & 2nd molars

Answer 56

pulp exposure

Question 57

this area is a risk for what? Mesial concavity over Max 1st PM

Answer 57

perforation into PDL

Question 58

this area is a risk for what? Mid-lingual and mid-facial of Mand 1st and 2nd molars

Answer 58

perforation into PDL

Question 59

this area is a risk for what? Mid-facial, mid-mesial and mid-distal furcations of Max 1st & 2nd molars

Answer 59

perforation into PDL

Question 60

true vs false Increase Distance if Planning to Place Crown 1.0-1.5 mm inside DEJ ◦ Want to avoid exposing the pin during future crown preparation

Answer 60

treu

Question 61

at a ph of 5.5 ____ will begin to demineralize.

Answer 61

enamel

Question 62

At a ph of 6.5 ____ will begin to demineralize.

Answer 62

dentin

Question 63

Caries is a_____ disease ◦ Diet, microflora, susceptible tooth

Answer 63

Multifactorial

Question 64

Caries requires for things inorder to occur. What are they?

Answer 64

- susceptible host - bacteria - food source - time

Question 65

What current Thoery ◦ Biofilm is responsible for the disease ◦ Plaque is pathogenic when disease is present ◦ Specific Microbes are the cause ◦ Strep Mutans ◦ Lactobacillus and Actinomyces V. (acid producers, can live in acid) ◦ Control the pathogens= control the disease

Answer 65

Specific plaque hypothesis

Question 66

t/f: strep mutans are the initial bacteria to cause disease, then lactobacillus is primarily responsible for progression of caries.

Answer 66

ture

Question 67

______ Dentin must be removed ◦ Bacteria present ◦ VERY rarely may leave in order to avoid pulp exposure ◦ Must place indirect pulp cap and seal caries in

Answer 67

Infected dentin

Question 68

______ Dentin - Soft, no bacteria present - can be left and sealed, but most often removed.

Answer 68

affected

Question 69

What is the treatment for initial carious lesions?

Answer 69

Treat with fluoride varnish, oral hygiene instructions

Question 70

What is the best prevention for pit and fissure caries?

Answer 70

sealance

Question 71

t/f: Using Ferric Sulfate (Astringedent®) hemostatic agent will stain the margins.

Answer 71

true

Question 72

t/f: Aluminum Chloride (Hemodent®) will not cause staining.

Answer 72

true

Question 73

E.max restorations are comprised of what material?

Answer 73

Lithium Discilicate

Question 74

When margin exceeds ___ of the distance between central groove and cusp tip MUST CAP WEAK CUSPS

Answer 74

2/3

Question 75

When margins end ___ distance between central groove and cusp tip CONSIDER CAPPING WEAK CUSPS

Answer 75

½

Question 76

When placing a MO Gold inlay, you bevel which of the following surfaces? * occlusal * axial pulpal line angle * gingival wall * All above

Answer 76

all above

Question 77

______ prevents distal displacement

Answer 77

Dovetail

Question 78

With a ceramic inlay, do you bevel the gingival?

Answer 78

no sir

Question 79

which cusps have a greater bevel?

Answer 79

Reverse bevel of 1-2 mm on cusps supporting occlusion; 1/2 | mm on cusps not supporting occlusion

Question 80

Do porcelain onlays have gingival bevel?

Answer 80

Bulk of Porcelain at margins – NO BEVEL

Question 81

T/f: Occlusal evaluation and adjustments are delayed until after cementation because of the fragility of porcelain restorations

Answer 81

Occlusal evaluation and adjustments are delayed until after cementation because of the fragility of porcelain restorations

Question 82

t/f: for porcelain veneers terminates at the gingival crest or 0.3-0.5 sub-gingivally for esthetics.

Answer 82

true

Question 83

t/f: For porcelain veneers: Minimum 1.0 -2.0 mm reduction for material bulk or NO reduction of incisal if lengthening incisal edge

Answer 83

True

Question 84

Adjust occlusion_____ veneers have been bonded

Answer 84

after

Question 85

The following are ______ for indirect restorations: - Conserve tooth structure - Better control of the contours - strength

Answer 85

advantages

Question 86

Gingival third is ______ than the middle and incisal thirds.

Answer 86

darker, More opaque IDK why she used darker in review, I like opaque more.

Question 87

The following are indications for ______. •Large carious lesions or existing defective restorations •Cracked Teeth •Endodontically treated teeth

Answer 87

onlays

Question 88

the following are indications for _____. •Teeth with minimal caries and strong buccal and lingual cusps •Acceptable (normal) occlusion

Answer 88

inlays

Question 89

t/F: ceramic inlay is more tapered than the gold inlay.

Answer 89

true