Block 4 Flashcards Preview

315 Block 4 > Block 4 > Flashcards

Flashcards in Block 4 Deck (59)
Loading flashcards...
1

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

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The barbs along the broach catch into the pulp tissue and remove it as the instrument is withdrawn from the canal – this is called extirpation.

2

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

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.

3

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

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

4

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

Class V

5

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

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

6

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

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.

7

What is systemic fluoride?

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

8

What is topical fluoride?

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

9

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

Caries

10

What oral disease does plaque and food debris form?

Periodontal disease

11

What is an advantage of delivering fluoride?

Helps prevent tooth decay

12

Why are interdental aids used to help prevent oral disease?

Reduces inter proximal caries

13

What is a disadvantage of composite restorative material?

Strict moisture control

14

What is an advantage of amalgam restorative material?

Strength

15

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

Demonstrations

16

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

Abrasion

17

What is a gelatin sponge?

Haemostatic device

18

What is oxidised cellulose?

Absorbable knitted fabric

19

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

Porcelain Inlay

20

What is a function of a suture?

Closes the incision site

21

What is a function of topical anaesthetic?

Numbs the surface of the application site

22

What is the purpose of irrigating during extractions?

To disinfect the area

23

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

Leucocytes

24

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

Ptyalin

25

What type of material is alginate?

Irreversible hydro-colloid

26

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

Functional appliance

27

What may indicate gingivitis?

False pockets

28

Grade 2 tooth mobility is:

Side to side movement more than 2mm

29

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

Overbite

30

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

Mobility

31

What is the natural ph within the mouth?

7.0

32

What medicine is used to treat ANUG?

Metronidazole

33

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

Between 20 minutes and 2 hours.

34

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

Cantilever bridge

35

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

Edentulous

36

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

Alveolectomy

37

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

Osseointegration

38

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

Carbohydrate

39

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

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

40

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

Demineralisation

41

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?

Remineralisation

42

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

White spot lesions

43

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

Brown lesions

44

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

Pulpitis

45

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

Dried and sealed in an air tight bag

46

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

Sikhs

47

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

Diabetes

48

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

Intraosseous

49

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

Class III

50

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

Class V

51

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

Amalgam

52

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

500,000

53

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

Tungsten Carbide

54

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

Zinc polycarboxylate

55

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

Dissecting forceps

56

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

Zinc oxide/Eugenol pack

57

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

Spiral paste filler

58

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

Temporary Crown

59

When mixing polyester resin which mixing method should be used?

Wax pad and spatula