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DENTAL NURSING revision dec 7th exam > RESTORATIVE DENTISTRY AND DENTAL MATERIALS > Flashcards

RESTORATIVE DENTISTRY AND DENTAL MATERIALS Flashcards

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1
Q

A patient has a full gold crown fitted on the lower left second molar tooth, but experiences discomfort in the tooth when closing the mouth fully. what item is required to solve the problem?

A

Articulating paper

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2
Q

The dentist is carrying out root canal therapy on the lower left first molar tooth. the root canals have been accessed and their contents are ready to be extirpated. what instrument are you most likely to pass to the dentist?

A

Barbed broach

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3
Q

Dentist notices several abrasion cavities on the patient. what is the black’s classification of the lesions?

A

Class V

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4
Q

What is the main advantage of glass ionomer over composites?

A

Realeses fluoride

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5
Q

What is the most likely reason for using calcium hydroxide in a pulptomy procedure?

A

Seal the root canal

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6
Q

Composite is available in a large range of shades, but they all contain what constituents?

A

Inorganic filler

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7
Q

When fixed restorations are to be constructed, the tooth is first prepared and an impression is taken, what impression material is least likely to be used?

A

Alginate

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8
Q

at the fit stage of denture construction, which instrument is required?

A 
A - articulator
B - CARBORUNDUM STONE
C - gas burner
D - mixing spatula
E - plaster knife
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9
Q

The dentist is carrying out root canal therapy all the caries have been removed and the dentist now needs to gain access to the root canal. what instrument is required at this stage?

A

Gates glidden drill

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10
Q

patient attends for the restoration of a class II cavity in a lower molar tooth, following caries removal and lining of the cavity, the dentist is most likely to require what item?

A

MATRIX OUTFIT

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11
Q

what is the speed at which the slow-speed handpiece operates at?

A

40,000 rpm

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12
Q

What situation will the zinc oxide and eugenol cement would not be used?

A

lining under composite

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13
Q

Various dental impression materials are availible for use during the construction of partial acyrlic dentures, what material cannot be used for this purpose?

A

Impression paste

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14
Q

Patient attends for amalgam restoration of the lower left second premolar tooth. the dentist removes the caries from the cavity and informs you that there is a pinpoint pulp exposure. what material are you most likely to be aksed to prepare?

A

Calcium Hydroxide

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15
Q

The dentist is completing root canal therapy on the lower right lateral insicor tooth. you have mixed a suitable root filling material. what instrument are you most likely give to the dentist so that the material can be inserted into the canal?

A

Rotary paste filler

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16
Q

When using composite material to restore a cavity. an etching technique is used to chemically roughen the enamel surface and allow a good bond to form between the filling and the tooth. what materia is used during this procedure?

A

Phosphoric acid

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17
Q

The dentist suspects an interproximal cavity between the lower left decidous molars. what is the most suitable instrument to confirm this diagnosis?

A

briault probe

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18
Q

What is most likely to cause zinc phosphate cement to set slowly?

A

inadequate powder

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19
Q

What is the main consituent of the alloy powder in amalgam?

A

silver

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20
Q

what treatment is appropriate to save the tooth when irreversible pulpitis occurs?

A

pulpectomy

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21
Q

What is the depth of composite material that the curing light can penetrate?

A

2.0mm

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22
Q

When placing a plastic restoration, what class is most likely to require a siqveland matrix outfit?

A

class II

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23
Q

A patient return to the surgery following placement of a restoration in the upper right first premolar. he is complaining of thermal sensitivity in the tooth, and the dentist decides to remove the restoration and place a temporary dressing. what material are you most likely to be asked to prepare?

A

Zinc oxide and eugenol cement

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24
Q

during the restration of a deep cavity in the upper left first premolar tooth, the dentist must carefully remove the caries overlying the pulp chamber, without causing an exposure. what instrument is used to achieve this?

A

Spoon excavator

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25
Q

What method of moisture control is least likely to be used during caries removal?

A

Cottonwool roll

26
Q

What speed does the air turbine operate at?

A

500,000 rpm

27
Q

What instrument is used to remove contaminated dentine from the root canal?

A

Hand file

28
Q

What material cannot be used as a luting cement?

A

Zinc oxide and eugenol

29
Q

A patient attends for the preparation of the lower right first molar tooth for a full gold crown, once the tooth has been anaesthetised, what burs is the dentist most likely to use for tooth preparation?

A

Friction grip tapered bur

30
Q

What actions results in contraction of the mixed amalgam, allowing caries to recur?

A

Prolonged mixing time

31
Q

Adequate retention of a full upper acyrlic denture in a patient’s mouth depends on the presence of a saliva film between the denture and the palate. what structure on the denture allows the film to develop here?

A

Post dam

32
Q

what restorative material has cariostatic properties?

A

Glass ionomer

33
Q

A patient returns to the surgery complaining of a rough edge to a recently provided composite restroration. once the dentist has located the rough margin, what instruments will be required?

A

Friction grip pear-shaped finishing bur

34
Q

What instruments is used to condense the filling material into the canal?

A

finger spreader

35
Q

in what situation would zinc phosphate cement would not be used?

A

lining a deep cavity

36
Q

In what situation would glass ionomer not be used?

A

Class II restoration

37
Q

patient attends for restoration. following caries removal, lining placement and insertion of the filling material. what istrument is used to fully adapt the material to the cavity

/

A

Ball-ended burnisher

38
Q

One situation where cacium hydroxide cement would not be used?

A

luting cement

39
Q

Once the root canal has been cleaned of all contaminated contents during root canal therapy, it is often temporarily filled with an antiseptic dressing. what material is included in this dressing?

A

zinc eugenol

40
Q

What material requires the presence of undercuts for it to remain in place?

A

Amalgam

41
Q

What indicates the diffrence between the preparation of a tooth for filling and the preparation of a tooth for an inlay?

A

Use of undercuts

42
Q

Amalgam’s alloy constituents can be varied to produce a mix that is less likely to discolour with time in saliva. higher levels of ‘ ‘ are most likely to produce resistance to discoloration?

A

copper

43
Q

Glass ionomer cements have many applications, including the addition of metal powder to enable their use as a core build-up material. what is the dental term for these enhanced products?

A

cermets

44
Q

what is the most likely reason for using calcium hydroxide in an open apex root filling?

A

seal the apex

45
Q

A patient attends for a class II restoration in the upper right second molar tooth. following caries removal and lining of the cavity, what instrument is used to place the filling material?

A

Amalgam carrier

46
Q

Before taking an impression of a tooth which has been prepared for a crown, the dentist ensures that the preparation margins are clearly visible. what instrument is used for this purpose?

A

Retraction cord

47
Q

What is the additional advantage that zinc oxide and eugenol cement have over other lining?

A

chemically calms the pulp

48
Q

what is the liquid component of the unset composite material?

A

resin

49
Q

what is not achieved by adequate packing of amalgam into the cavity?

A

produces a shiny surface

50
Q

What endodontic procedure invloves a retrogade root filling?

A

Apicectomy`

51
Q

What material is not used in temporary crown construction?

A

Chrome cobalt

52
Q

What is the term for the branch of dentistry concerned with the replament of missing teeth?

A

prosthodontics

53
Q

What is the most likely reason for glass ionomer to be used as a lining in a deep cavity?

A

non-irritant

54
Q

What bridge is one where the retainers are on only one side of the pontic and adjacent to each other?

A

simple cantilever

55
Q

What instrument is used to enlarge the root canal in a circular fashion?

A

hand reamer

56
Q

when a patient has intrinsically discoloured anterior teeth, the dentist has several restorative options to improve the aesthetics of theses teeth. what technique is most likely to be used in young adult patients?

A

porcelain veneers

57
Q

What is the advantage of the maryland bridge over more conventional bridges?

A

conserve tooth tissue

58
Q

What instrument is used for fine wax adjustments ar a trial insertion?

A

Le Cron carver

59
Q

Following surgery for oral cancer, an anatomical defect may be left in the patients oral cavity, which can be successfully closed by wearing a special appliance. What term describes this type of appliance?

A

obturator

60
Q

What material is used for soft lining of full denture?

A

Slow-cure acrylic

61
Q

What term describes the method of bony retention of the implant?

A

Osseointegration

62
Q

During root canal therapy, the dentist will regularly irrigate the canal with a side-bevelled needle and syringe in order to wash out debris from the canal. What is the reason that the needle is side-bevelled?

A

prevents apical injection

DENTAL NURSING revision dec 7th exam (17 decks)

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