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315 Block 4 > Block 4 > Flashcards

Block 4 Flashcards

1
Q 
Several specialised instruments are used during a pulpectomy procedure. Which one of the following is used to extirpate the pulp contents?
Barbed broach
Gates Glidden drill
Hand file
Lateral condenser
Rotary paste filler
A

Barbed broach
The barbs along the broach catch into the pulp tissue and remove it as the instrument is withdrawn from the canal – this is called extirpation.

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2
Q 
During a restorative procedure the pulp chamber receives a small breach. Which one of the following procedures is most likely to be carried out?
Apicectomy
Open apex root filling
Pulp capping
Pulpectomy
Pulpotomy
A

Pulp capping.
Pulp capping a small breach gives the tooth the best chance of remaining vital, and tooth vitality should always be preserved whenever possible.

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3
Q 
Several specialised instruments are used during a pulpectomy procedure. Which of the following is used during obturation of the root canal?
Barbed broach
Finger spreader
Gates Glidden drill
Hand file
Hand reamer
A

Finger spreader.

Obturation is the packing and condensing of the root canal with gutta percha.

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4
Q 
Abfraction is a recognised type of non-carious tooth surface loss. Which cavity classification does this lesion present as?
Class I
Class II
Class III
Class IV
Class V
A

Class V

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5
Q 
Zinc oxide and eugenol cement is a versatile dental material. Which one of the following is not one of its recognised uses?
Impression paste
Luting cement
Periodontal dressing
Root-filling paste
Sedative dressing
A

Luting cement

The cement has no adhesive properties to act as a luting cement.

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6
Q 
A patient is to undergo the placement of a composite filling into a class III cavity. Which of the following best describes the shape of this cavity in a tooth?
Cervical of canine
Distal-buccal of molar
Distal-occlusal of premolar
Mesial and incisal edge of incisor
Mesial-palatal of incisor
A

Mesial-palatal of incisor.
Class III cavities involve a mesial or distal surface of a canine or incisor, with or without an extension, but not involving the incisal edge.

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7
Q

What is systemic fluoride?

A

Ingested and incorporated into the tooth from within. E.g. in from the Fluoridated public water supply at one part per million.

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8
Q

What is topical fluoride?

A

Applied externally to the tooth e.g. toothpaste or gel.

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9
Q

What oral disease does plaque, food debris and refined carbohydrates form?

A

Caries

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10
Q

What oral disease does plaque and food debris form?

A

Periodontal disease

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11
Q

What is an advantage of delivering fluoride?

A

Helps prevent tooth decay

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12
Q

Why are interdental aids used to help prevent oral disease?

A

Reduces inter proximal caries

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13
Q

What is a disadvantage of composite restorative material?

A

Strict moisture control

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14
Q

What is an advantage of amalgam restorative material?

A

Strength

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15
Q 
Which of the following is the most effective method for delivering oral health messages?
Texting,
Using the internet,
Word of mouth 
Demonstration
A

Demonstrations

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16
Q

Various types of tooth surface loss are well recognised. Which is caused by vigorous tooth brushing?

A

Abrasion

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17
Q

What is a gelatin sponge?

A

Haemostatic device

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18
Q

What is oxidised cellulose?

A

Absorbable knitted fabric

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19
Q

Which of the following is a pre-constructed restoration? Amalgam filling
Glass ionomer filling
Composite filling
Porcelain inlay

A

Porcelain Inlay

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20
Q

What is a function of a suture?

A

Closes the incision site

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21
Q

What is a function of topical anaesthetic?

A

Numbs the surface of the application site

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22
Q

What is the purpose of irrigating during extractions?

A

To disinfect the area

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23
Q 
Which of the following components of saliva are white blood cells?
Ptyalin
Antibodies
Leucocytes
Inorganic ions and minerals
A

Leucocytes

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24
Q 
Which component of saliva protects against caries but allows dental calculus to form easily?
Ptyalin
Antibodies
Leucocytes
Inorganic ions and minerals
A

Ptyalin

25
Q

What type of material is alginate?

A

Irreversible hydro-colloid

26
Q

What orthodontic device specifically uses the oral musculature to allow controlled movement of the mandible?

A

Functional appliance

27
Q

What may indicate gingivitis?

A

False pockets

28
Q

Grade 2 tooth mobility is:

A

Side to side movement more than 2mm

29
Q

The vertical distance between the incisal edge of the upper and lower anterior teeth is known as:

A

Overbite

30
Q 
Which of the following is the consequence of advanced periodontal disease?
False pocket 
Mobility 
True pocket 
Apical Abscess
A

Mobility

31
Q

What is the natural ph within the mouth?

A

7.0

32
Q

What medicine is used to treat ANUG?

A

Metronidazole

33
Q

How long does it take for saliva to buffer the affect of the acid in the mouth?

A

Between 20 minutes and 2 hours.

34
Q

Which type of bridge does the following describe? “Where the retaining teeth are to one side of the pontic only.”

A

Cantilever bridge

35
Q

When there are no teeth left in a jaw it is said to be…?

A

Edentulous

36
Q

The surgical removal and smoothing of ridges to allow the comfortable wearing of a denture is called?

A

Alveolectomy

37
Q

What has to occur after an implant has been placed for it to be successful?

A

Osseointegration

38
Q

Which is the only food group that can be turned into acid by bacteria and therefore cause caries?

A

Carbohydrate

39
Q

Which naturally occurring sugars produce so little organic acid that they are considered harmless to teeth?

A 
Intrinsic sugars (found naturally in foods) - Fructose
Milk extrinsic sugars - lactose
40
Q

The initial acid attack where a microscopic layer of enamel is dissolved away is known as what?

A

Demineralisation

41
Q

After a meal, when the PH level has been restored to 7 and there is no more sugar present in the plaque, some natural healing takes place. What is this known as?

A

Remineralisation

42
Q

What do very early acid attacks show as on the enamel surface?

A

White spot lesions

43
Q

Areas of repair due to demineralisation followed by remineralisation often show as what on the teeth?

A

Brown lesions

44
Q

What can occur when caries extends through the dentine to the pulp?

A

Pulpitis

45
Q

How should Elastomer impressions be stored once the impression has been disinfected?

A

Dried and sealed in an air tight bag

46
Q

Which ethnic group commonly eats more dairy products than many other groups?

A

Sikhs

47
Q 
Which of the following general health problems affects the oral soft tissues and makes patients prone to postoperative complications?
Anorexia nervosa
Diabetes
Alcoholism
Bulimia
A

Diabetes

48
Q

Which injection is given directly through the outer cortical plate of the jaw?

A

Intraosseous

49
Q

According to Black’s classification, cavities involving the mesial or distal surface of an incisor or canine are which class?

A

Class III

50
Q

According to Black’s classification, cavities involving the cervical margin of any tooth are which class?

A

Class V

51
Q

Self-tapping dentine pins are a method of filling retention - which type of filling is this method used with?

A

Amalgam

52
Q

Air turbine (high speed hand pieces run at up to how many revolutions per minute?

A

500,000

53
Q 
Burs for high speed hand pieces have either diamond cutting surfaces, or which of the following?
Steel
Titanium
Tungsten Carbide
All of the above
A

Tungsten Carbide

54
Q 
Which of the following temporary restorative materials is an alternative to zinc phosphate in most applications?	
Zinc oxide and Eugenol
Glass ionomer
Cavit
Zinc polycarboxylate
A

Zinc polycarboxylate

55
Q

During periodontal flap surgery, which instrument is used to hold the flap edges taut during suturing?

A

Dissecting forceps

56
Q

During gingivectomy, what material covers the raw area following the removal of incised gingivae?

A

Zinc oxide/Eugenol pack

57
Q

Which instrument would be used during endodontic treatment to spin sealant material into the root canal?

A

Spiral paste filler

58
Q

Performed acrylic, polycarbonate or cold cure acrylic are all construction materials used for which fixed prosthesis?

A

Temporary Crown

59
Q

When mixing polyester resin which mixing method should be used?

A

Wax pad and spatula

315 Block 4 (1 decks)

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