fixed pros Flashcards

1
Q

When recording an impression for fixed prosthodontics, you apply the light bodied-PVS to:

a. the prepared tooth
b. the prepared tooth and adjacent teeth
c. the impression tray
d. the prepared tooth and all teeth in the arch

A

D - prepared tooth and all teeth in the arch

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2
Q

Your patient returns for the fit appointment of a full contour crown on the UR5 which is vital. The pt reports severe spontaneous pain from the tooth which wakes them at night and is painful to bite on.
What do you do next?

a. remove the provisional restoration
b. fill the definitive restoration
c. apply a desensitising agent.
d. special investigations

A

D - special investigations

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3
Q

You have just made your custom-made provisional restoration and found the occlusal aspect is below the minimum thickness for the material.
What do you do?

a. record the impression with heavy and light bodied PVS
b. cement the provisional with TempBond Clear
c. adjust the prep and make a new provisional
d. place gingival retraction cord to compensate

A

C - adjust the prep and make a new provisional D

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4
Q

For the twin cord gingival retraction technique, which cord is removed prior to recording the impression?

a. size 000
b. size 00
c. size 0
d. size 1

A

B - size 00

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5
Q

After tooth preparation for a full gold crown, what should be done next?

a. record the impression
b. facebow record
c. fabrication of the provisional restoration
d. cementation of the crown

A

C - provisional restoration D

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6
Q

For the twin cord gingival retraction technique, which is placed first?

a. size 000
b. size 00
c. size 0
d. size 1

A

A - size 000

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7
Q

You have a well fitting MCC. There is good height and retention-resistance form to the preparation.
Which of the following cements would be the most appropriate?

a. aquacem
b. panavia 21
c. calibra
d. rely x unicom
e. rely x ultimate

A

A - aquacem

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8
Q

**True or False*

A total etch bonding system requires that you need to each the tooth prior to applying bonding agent?

A

True

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9
Q

True or False
Oxyguard is usually used with Panavia 21

A

True

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10
Q

You are planning to cement a veneer for a patient.
How long should the initial light cure be?

a. 5 seconds
b. 10 seconds
c. 30 seconds
d. 2 mins

A

B - 10 seconds

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11
Q

You plan to cement an Emax crown with RelyX Unicem.
When and where should you apply the silane coupling agent?

a. to the tooth prior to trying in the crown
b. to the fitting surface of the crown prior to trying in the crown
c. to the occlusal surface of the crown after trying in the crown
d. to the tooth after trying in the crown
e. to the fitting surface after trying in the crown

A

E - to the fitting surface after tying in the crown

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12
Q

Calibra is an example of what?

a. GIC luting cement
b. resin cement
c. RMGIC luting cement
d. 1 step bonding system

A

B - resin cement

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13
Q

Which of these cements is recommended for cementing a resin-bonded bridge on the restorative clinic?

a. calibra
b. panavia 21
c. zinc phosphate
d. aquacem GIC luting cement
e. rely x

A

B - panavia 21

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14
Q

Which of these cements is recommended for cementing veneers on restorative?

a. calibra
b. panavia 21
c. zinc phosphate
d. zinc polycarboxylate
e. rely x

A

A - calibra

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15
Q

Which of these cements is recommended for cementing an Emax ceramic inlay on restorative?

a. calibra
b. panavia 21
c. zinc phosphate
d. zinc polycarboxylate
e. rely x unicem

A

E - rely X unicem

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16
Q

The main root filling material commonly used to fill root canals is what?

a. silver points
b. acrylic resin
c. zinc oxide eugenol
d. gutta percha

A

D - gutta percha

17
Q

What is the limit on numbers of indirect restorations that can be provided in 1 course of treatment under the NHS?

a. 1
b. 2
c. 3
d. unlimited

A

D - unlimited

18
Q

How many UDAs would you receive for a root filling with cuspal coverage onlay?

a. 1
b. 3
c. 12
d. 15

A

C - 12 UDAs

19
Q

How much would you usually quote a patient who requires root filling?

a. £26.80
b. £73.50
c. £319.10

A

C - £319.10

20
Q

What NHS Band does a premolar root filling fall into?

a. band 1
b. band 2a
c. band 2b
d. band 2c
e. band 3

A

C - band 2b

21
Q

If a post is necessary to retain a core, at least how much root filling material should remain in the apical third of the tooth to provide an apical seal?

a. 1mm
b. 4mm
c. 8mm
d. half the canal length

A

B - 4mm

22
Q

If placing a nayyar core in a tooth, you should aim to remove up to how much endodontic filling material form the root canal?

a. removal of GP is not neccessary
b. 1mm
c. 4mm
d. 8mm

A

C - 4mm

23
Q

A patient arrives in your surgery with a lower incisor fractured at gingival level.
What is the prognosis for this tooth?

a. very poor
b. reasonable
c. good
d. excellent with modern restorative techniques

A

A - very poor

24
Q

A study by Reeh et.al found that an MOD cavity prep reduces the stiffness of a tooth by what percentage?

a. 10%
b. 25%
c. 34%
d. 63%

A

D - 63%

25
Q

What is the minimum depth of a ferrule that should be incorporated into a crown preparation?

a. 1mm
b. 2mm
c. 3mm
d. 5mm

A

B - 2mm

26
Q

When placing an intracanal medicament, which type of calcium hydroxide is used?

a. liquid
b. non-setting (e.g: hypocal/ultracal/calcipast)
c. setting (e.g: dycal)

A

B - non-setting

27
Q

Wave One Gold Primary has a tip diameter of which ISO size?

a. 10
b. 15
c. 20
d. 25
e. 30

A

D - 25

28
Q

At which anatomical point should the biomechanical preparation terminate?

a. apical constriction
b. apical foramen
c. radiographic apex
d. 0.5mm beyond the root apex

A

A - apical constriction

29
Q

What diameter are the dentinal tubules close to the pulp?

a. 1-1.5 microns
b. 3-4 microns
c. 5-8 microns
d. 10-14 microns

A

B - 3-4 microns

30
Q

Which nerve fibres are responsible for dull throbbing pain associated with irreversible pulpitis?

a. A beta
b. A delta
c. C fibres

A

C - c fibres

31
Q

What is the shape of the access cavity for the upper and lower premolars?

a. triangular
b. oval
c. round
d. rectangular

A

B - oval

32
Q

The anterior tooth most likely to display 2 canals is:

a. maxillary central incisor
b. mandibular central incisor
c. maxillary lateral incisor
d. mandibular canine

A

B - mandibular central incisor

33
Q

Which tooth has 2 canals 90% of the time?

a. maxillary central incisor
b. maxillary lateral incisor
c. maxillary canine
d. maxillary first premolar
e. mandibular lateral incisor
f. maxillary second premolar
g. mandibular first premolar

A

D - maxillary first premolar

34
Q

What concentration of sodium hypochlorite will you use on clinic with LUDH when providing endo tx?

a. 0.2%
b. 1%
c. 2%
d. 5.25%
e. 17%

A

B - 1%

35
Q

** What is the most appropriate length of your irrigation needle in a tooth with a closed apex?**

a. 1mm long of estimated working length
b. at the confirmed WL
c. 1mm short of confirmed WL
d. 2mm short of confirmed WL
e. 2mm short of ESL

A

D - 2mm short of confirmed working length b