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xD3 Endo Final > Restoring Endo Treated Teeth (Archer / imbrey) > Flashcards

Restoring Endo Treated Teeth (Archer / imbrey) Flashcards

(75 cards)

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1
Q

Which teeth had a higher success rate: teeth with a good restoration and poor endo or teeth with a poor restoration and good endo?

A

Good restoration and poor endo

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2
Q

What is ideal for getting a good seal over endo treatment prior to the definitive restoration?

A

Adequate temporary restoration of access opening and bonded seal over gutta percha

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3
Q

What are 3 orifice sealers?

A
  1. MTA
  2. Glass ionomer
  3. Flowable resin (purple permaflow resin(
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4
Q

What temporary restoration does Grad endo use?

A

Triage glass ionomer

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5
Q

What are the components of a long tooth seal from apex to crown in order?

A
  1. Calcium hydroxide
  2. MTA
  3. Gutta percha
  4. Glass ionomer
  5. Composite resin
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6
Q

When is root canal therapy complete?

A

When the tooth is properly restored

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7
Q

What is the first question to ask before restoring an endodontically treated tooth?

A

Is it restorable?

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8
Q

Once the tooth is confirmed as restorable, what should you make sure concerning the endo treatment?

A
  1. Sufficient apical seal
  2. Asymptomatic
  3. Radiolucency decreasing in size
  4. Absence of fistula if one was present before
  5. Provisional restoration still in place
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9
Q

What is an inadequate restoration with respect to Endodontics?

A
  1. One that does not give adequate apical seal for the endo

2. One that does not give a seal and full cuspal coverage on premolars and molars for restorative

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10
Q

Is it true that the dentin of endodontically treated teeth is weaker than vital teeth?

A

No

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11
Q

What is the result of the access and tooth preparation associated with an NSRCT treated tooth?

A

Tooth has increased cuspal flexure and increased fracture risk

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12
Q

What improves the prognosis of NSRCT teeth?

A

Restorations that enhance a tooth’s structural integrity

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13
Q

In the Ray and Trope study, what was shown to have significantly more presence of periradicular pathology after endo and restorative treatment: poor restorations or poor endo?

A

Poor restorations

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14
Q

What restoration is indicated for conservative access on anterior tooth?

A

Composite

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15
Q

What are 2 considerations when deciding the restoration for an endodontically treated anterior tooth?

A
  1. Structural integrity

2. Functional requirement

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16
Q

What is a consideration if it is determined an anterior tooth endodontically treated will need a crown?

A

Does it require a post and core

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17
Q

The presence of what is the only significant variable to predict long-term success in endodontically treated posterior teeth?

A

Presence of cuspal coverage restoration

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18
Q

If you must do an access through a gold crown, what must be done to restore it?

A

SMBP 5 step amalgam bonding with Valiant PhD amalgam

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19
Q

When restoring an access through a PFM crown, how many different substrates exist and how many will you bond to?

A

3 substrates exist (porcelain, metal alloy, dentin)

You will bone to 2 (porcelain and dentin)

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20
Q

What is used to bond to porcelain?

A

HF etch, Silane coupler, Optibond Solo Plus

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21
Q

What is used to bond to dentin?

A

Phosphoric acid etch, optioned solo plus, rein

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22
Q

Whar are some methods to increase retention and resistance of restorations od endodontically treated teeth?

A
  1. TMS pins
  2. Amalgapins
  3. Amalgam bonding
  4. Condense into pulp chamber
  5. Condense into root canal
  6. Posts
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23
Q

What must be considered with respect to the final restorations when placing pins for retention?

A

If they will be within the bounds of the final restoration

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24
Q

How much pulp chamber height is sufficient for retention?

A

4mm

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25
If there is less than 4mm of pulp chamber height, what can be used to aide retention?
Canals
26
What is the purpose of a post?
Retain the core
27
What are 2 general classes of posts?
1. Prefabricated | 2. Custom
28
Prefabricated posts can be what design?
1. Active (look like screws) 2. Passive (held in with cement) 3. Parallel 4. Tapered
29
Custom cast posts can be made how?
Directly or indirectly, either parallel or tapered
30
What are 5 material prefab posts can be made from?
1. Stainless steel 2. Nickel chromium alloy 3. Titanium alloy 4. Carbon fiber 5. Zirconium or ceramic
31
What is a disadvantage of titanium alloy prefabricated post?
1. Radiopacity the same as gutta percha | 2. Weaker and tend to break during retreatment
32
What is the main advantage of a carbon fiber prefab post?
Modulus of elasticity equal to dentin
33
What does zirconium or ceramic prefab post offer?
Maximum esthetics
34
What is the disadvantage of the zirconium prefab post?
It cannot be etched
35
What is the only time an active post is indicated?
With short roots when maximum retention is required
36
Does increasing the diameter of a post increase its retention?
No, teeth with thicker posts fracture more easily
37
What diameter should a post be?
Do not exceed 1/3 cross sectional diameter of the root
38
What is a danger when planning or placing a post?
Unseen root concavities
39
How large should a canal be opened when prepping for a post?
Only enough to allow a post to fit accurately and passively
40
Does cement have a large effect on the post?
No
41
How long should a post be?
As long as possible while leaving 4-5mm of gutta percha at the apex
42
What limits post length other than the requirement for 4-5 mm gutta percha at the apex?
Individual tooth anatomy. Can only go where the canal is straight
43
Post length should at least be equal to what?
Height of clinical crown
44
Post length should be at least how long?
At least 8mm
45
What is a landmark that the post must extend apically beyond?
Beyond the crest of bone
46
What amount of gutta percha must be left at the apex for a post?
4-5mm gutta percha
47
Are posts commonly required in molars?
No just rarely
48
What canal would a post be placed in molars?
1. Straight 2. Mandibular molar distal canal 3. Maxillary molar palatal canal
49
Is the parapets plus system passive or active?
Passive
50
What is the design of the ParaPost Plus prefab post?
Parallel serrated
51
The ParaPost Plus prefab post comes in what 2 materials?
Titanium and stainless steel (VCU has stainless steel)
52
The ParaPost Plus prefab post is cemented with what?
Fujicem
53
What core material will a ParaPost Plus prefab post retain?
1. Amalgam | 2. Composite
54
What are 4 types of composite core materials?
1. Z250 2. CompCore 3. FluoroCore 4. TiCore
55
What are 3 different instruments that can be used to remove gutta percha to make space for a post?
1. Parapost drill 2. Gates Glidden 3. Warm Plugger
56
The brown ParaPost drill is what diameter?
0.9mm
57
The yellow ParaPost drill is what diameter?
1.0mm
58
The blue ParaPost drill is what diameter?
1.14 mm
59
The red ParaPost drill is what diameter?
1.25mm
60
The violet ParaPost drill is what diameter?
1.40mm
61
The black ParaPost drill is what diameter?
1.50mm
62
The green ParaPost drill is what diameter?
1.75mm
63
A #1 Gates Glidden is equal to what file size?
50
64
A #2 Gates Glidden is equal to what file size?
70
65
A #3 Gates Glidden is equal to what file size?
90
66
A #4 Gates Glidden is equal to what file size?
110
67
What are 4 disadvantages of post retention?
1. Risk of perforation 2. Increased chance of root fracture 3. Increased of endodontic failure 4. Strip perforation
68
Duralay is used making what custom post and core: direct or indirect?
Direct
69
An impression of a prepared post space is used to make what custom post and core: direct or indirect?
Indirect
70
How many appointments does a custom post and core take to make the most custom fit?
2 appointments
71
To what treatment is one committed with a custom post and core?
Crown
72
What should be placed in the cervical portion of a custom post and core preparation?
Anti-rotational grooves
73
What is a ring or cap usually of metal put around a slender shaft (as a cane or a tool handle) to strengthen it or prevent splitting?
Ferrule
74
What is the required Ferrule (minimum amount of natural tooth structure from the mating cervically) for a crown restoration?
2mm
75
Short posts are more likely to result in what?
Crown fracture

xD3 Endo Final (8 decks)

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