Brainscape's Knowledge GenomeTM

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


See full index

D2 Fall - Operative III > Class IV Composites, Veneers > Flashcards

Class IV Composites, Veneers Flashcards

1
Q

What is a class IV prep due to?

A

“chipped tooth”
Fractured incisal edge

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

What is a class III prep due to?

A

Interproximal caries on an anterior tooth

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

Whats the difference between class IV and class III prep?

A

Class IV has a missing incisal angle

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

What class prep has a more extensive bevel and why?

A

Class IV has more extensive bevel than class III to increase retention and esthetics

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

Where is there a bevel on a class IV prep?

A

At minimum same amount of enamel that is missing due to fracture

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

What does a bevel do for enamel?

A

Improves the adhesive bond to enamel by 18%

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

When are lingual enamel margins NOT beveled?

A

When there is a heavy centric contact (areas of teeth that contact opposing arch) on the margin

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

What should you do on the lingual to compensate for no bevel?

A

Use a dovetail for retention without beveling

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

What is a veneer prep?

A

A thin covering (often to hide the under layer)

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

What are the two types of veneers preps?

A
  1. Incisal lapping
  2. Window prep
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does an incisal lapping prep do to the incisal edge?

A

Prep includes incisal edge (removes the incisal edge)

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

When is an incisal lapping prep indicated?

A

When tooth needs to be lengthened or incisal defect is present

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

What is the more common veneer prep?

A

Window prep

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

What does a window prep do to the incisal edge?

A

Remains intact

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

How is a window veneer prep done?

A

Remove only enough tooth structure to achieve optimal
contours with final restoration

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

Is a window prep an intra or extra enamel prep?

A

Intra enamel prep

17
Q

What does it mean to be an intra enamel prep?

A

Removes fluoride rich layer of enamel (that is resistant to etching), roughens surface to aid in bonding, establishes definite finish line

18
Q

What are common mistakes associated with veneers?

A
  • Failure to do wax-up prior to prepping
  • Failure to address gingival asymmetry
  • Failure to communicate effectively with patient
    (Everyone must have same expectation)
  • Don’t start a case that should have never been started (learn to say no)
19
Q

What are the two ways to create veneers?

A
  1. Indirect
  2. DIrect
20
Q

Where are indirect veneers made?

A

Made outside the mouth

21
Q

What are indirect veneers made of?

A

Porcelain (more common)
Lithium disilicate

22
Q

What are the advantages of indirect veneers?

A

o Excellent aesthetics
o Color match
o High bond strength
o Conducive with periodontal health
o Low wear/abrasion on porcelain restoration

23
Q

What are the disadvantages of indirect veneers?

A

o Multiple appointments
o Expensive
o Must have adequate room for preparation
o Requires laboratory involvement and fee
o Difficult to keep provisional seated

24
Q

Where are direct veneers made?

A

In the mouth

25
Q

What are direct veneers made of?

A

Composite

26
Q

What are advantages of direct veneers?

A

o Mask discoloration
o Cheaper than indirect
o One appointment
o Can easily correct rotated tooth or diastema

27
Q

What are disadvantages of direct veneers?

A

o Susceptible to wear
o Margin fracture/stain
o Discoloration
o Contours

28
Q

What materials give a better esthetic result?

A

Porcelain has better esthetics and color match compared to composite veneers

29
Q

What are some alternative treatments to help patients with esthetic concerns?

A
  • Bleaching for discoloration
  • Microabrasion and macroabrasion (I assume this is polishing) for discoloration
  • Orthodontics (rotation or diastema)
30
Q

What are veneer indications?

A
  • Intrinsic stain: Tetracycline, fluorosis
  • Extrinsic stain: coffee/wine/smoking
  • Wear patterns
  • Poor restorations
  • Diastemas
  • rotated/misaligned teeth
31
Q

What are veneer contraindications?

A
  • Severely mispositioned teeth
  • Denuded dentin
  • Poor oral hygiene
  • Highly fluoridated teeth (trouble bonding)
  • Primary dentition/ adolescents
  • Pregnancy
  • bruxism
32
Q

What material should be used to restore on the facial? lingual? both?

A

Facial: microfill
- smooth and stains less than hybrid
Lingual: hybrid
Both: nanohybrid
- strength and esthetics

D2 Fall - Operative III (11 decks)

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