Week 3 endo - temporisation

Question 1

What is the primary purpose of temporisation between endodontic visits?
a) To prevent tooth mobility
b) To allow the tooth to heal naturally
c) To maintain a disinfected environment
d) To enhance aesthetic appearance

Answer 1

c

Question 2

What is the primary purpose of temporisation in endodontics?
a) To maintain a disinfected environment
b) To enhance tooth whitening
c) To reduce occlusal load
d) To desensitise pulp

Answer 2

a

Question 3

Which material is commonly used as an interappointment medicament?
a) Sodium hypochlorite
b) Calcium hydroxide
c) Chlorhexidine
d) Zinc phosphate

Answer 3

b

Question 3

What is the pH of non-setting calcium hydroxide?
a) 10.5
b) 11.0
c) 12.5
d) 9.0

Answer 3

c

Question 4

What additive makes calcium hydroxide radiopaque?
a) Silver nitrate
b) Lead oxide
c) Iodine
d) Barium sulphate

Answer 4

d

Question 5

What is used to prevent temporary material from entering the canal orifice?
a) Cotton wool pledget
b) Gutta-percha
c) Rubber dam
d) Matrix band

Answer 5

a

Question 6

What can a cotton pledget be soaked in to enhance its antibacterial effect?
a) Eugenol
b) Chlorhexidine
c) Calcium hydroxide
d) Hydrogen peroxide

Answer 6

c

Question 7

Which property of Ca(OH)₂ contributes to its antibacterial action?
a) Low pH
b) High pH
c) Low viscosity
d) Water solubility

Answer 7

b

Question 8

What is the main goal of a good coronal seal?
a) Improve esthetics
b) Support occlusion
c) Prevent bacterial ingress
d) Enhance radiopacity

Answer 8

c

Question 9

What type of cement is recommended for temporary restorations in endo?
a) Zinc-reinforced glass ionomer
b) Resin composite
c) Polycarboxylate
d) GIC with fluoride

Answer 9

a

Question 9

Why is a contrast white shade useful in temporary restorations?
a) It mimics natural enamel
b) It’s easier to condense
c) It’s more adhesive
d) It allows easy removal

Answer 9

d

Question 10

How does a good seal affect bacterial contamination?
a) Encourages biofilm
b) Reduces bacterial ingress
c) Promotes leakage
d) Prevents restoration removal

Answer 10

b

Question 11

What kind of curing does zinc-reinforced glass ionomer use?
a) Light curing
b) Dual curing
c) Self-curing
d) Thermal curing

Answer 11

c

Question 12

What is the working time for Chemfil Rock after mixing?
a) 30 seconds
b) 1 minute
c) 1 minute 30 seconds
d) 3 minutes

Answer 12

c

Question 12

What does the cotton pledget do during temporisation?
a) Prevents blockage of the canal
b) Prevents post-op pain
c) Strengthens the root
d) Increases retention

Answer 12

a

Question 13

What is the first step before placing Chemfil Rock into the cavity?
a) Apply bonding agent
b) Activate the capsule
c) Etch the cavity
d) Light cure the base

Answer 13

b

Question 14

How long does Chemfil Rock take to set?
a) 2 minutes
b) 4 minutes
c) 5 minutes
d) 6 minutes

Answer 14

d

Question 15

Which device is used to apply Chemfil Rock?
a) Syringe
b) Applicator gun
c) Spatula
d) Matrix band

Answer 15

b

Question 16

What does high pH of Ca(OH)₂ help stimulate?
a) Gingival bleeding
b) Apical constriction
c) Healing of bony lesions
d) Enamel remineralization

Answer 16

c

Question 17

Which is NOT a characteristic of zinc-reinforced GIC?
a) Strong
b) Packable
c) Light cured
d) Radiopaque

Answer 17

c

Question 18

Why does adhesion to cavity walls help during temporisation?
a) Reduces post-op pain
b) Avoids cavity modification
c) Prevents fluoride release
d) Requires etching

Answer 18

b

Question 19

Calcium hydroxide in endo is radiopaque due to:
a) Calcium ions
b) High pH
c) Barium salt
d) Strong base

Answer 19

c

Question 20

Which of these is a disadvantage of poor temporisation?
a) High fluoride release
b) Ingress of bacteria
c) Dryness of cavity
d) Premature setting

Answer 20

b

Question 21

What is a benefit of strong radiopacity in temporary materials?
a) Comfort
b) Visibility on X-ray
c) Bond strength
d) Flexibility

Answer 21

b

Question 22

Which of the following is self-curing? a) Zinc-reinforced glass ionomer b) Resin-modified glass ionomer c) Composite resin d) Polycarboxylate cement

Answer 22

a

Question 23

How long should you mix Chemfil Rock in an amalgamator? a) 5 seconds b) 10 seconds c) 15 seconds d) 20 seconds

Answer 23

c

Question 24

The cotton wool pledget is placed: a) At the pulp floor b) Inside canal c) On top of Ca(OH)₂ d) Under permanent restoration

Answer 24

c

Question 25

The temporary seal should: a) Resist occlusal forces permanently b) Be flexible under pressure c) Provide a hermetic seal d) Stay in place indefinitely

Answer 25

c

Question 26

The antibacterial effect of Ca(OH)₂ is due to: a) Radiopacity b) Low solubility c) High alkalinity d) Adhesion

Answer 26

c

Question 27

What is the purpose of a temporary restoration during endodontics? a) Maintain aesthetics b) Prevent reinfection c) Enhance occlusion d) Avoid thermal sensitivity

Answer 27

b

Question 28

What does a quick setting material help with? a) Flexibility b) Patient comfort c) Clinical efficiency d) Moisture control

Answer 28

c

Question 29

Calcium hydroxide dressing helps with: a) Analgesia b) Healing c) Insulation d) Color matching

Answer 29

b

Question 30

The canal space should be sealed after: a) Access preparation b) Pulp extirpation c) Obturation d) Placement of crown

Answer 30

b