Endo

Question 1

Its cross-section is triangular: 
A) Kerr-reamer
B) Miller needle
C) Donaldson
D) Excalibur
E) Gates-Glidden bur

Answer 1

A

Question 2

It has only one cutting edge: 
A) Kerr-reamer
B) Hedstrom file
C) Barbed broach instrument 
D) Kerr-file
E) Kerr-flex file

Answer 2

B

Question 3

It has four cutting edges: 
A) Profile
B) Hedström file 
C) Unifile
D) Kerr-file
E) Miller needle

Answer 3

D

Question 4

It is usable for exploring the root canal: 
A) Miller needle
B) Donaldson
C) Apex locator 
D) Gottlieb probe 
E) Hedström file

Answer 4

A

Question 5

It is usable both for reaming and filing 
A) Kerr-file
B) Kerr-reamer
C) Hedström file
D) Barbed broach instrument 
E) Donaldson

Answer 5

A

Question 6

Using the proper size the instrument enlarges the root canal walls uniformly: 
A) Donaldson
B) Hedström file
C) Miller needle
D) Kerr-reamer
E) Barbed broach instrument

Answer 6

A

Question 7

It is not usable for circumferential root canal preparation: 
A) Kerr-reamer
B) Kerr-file
C) Hedström file 
D) Kerr-flex file
E) Flexicut file

Answer 7

A

Question 8

The number of the cutting edges of the Hedstrom file is/are:
A) One
B) Two
C) Three D) Four E) Five

Answer 8

A

Question 9

The characteristic motion of the Excalibur instrument is: A) Aleatic motion
B) Rotation
C) Quarter turn in both clockwise and counter iclockwise direction
D) Up-and-down motion
E) Oscillating motion

Answer 9

A

Question 10

This instrument is not suitable for measuring the working length: 
A.) Endometer
B.) Dentometer 
C.) Sono-Explorer 
D.) Digident
E.) Dynatrak

Answer 10

E

Question 11

This material has soft tissue-dissolving effect when cleaning the root canal with it: 
A.) Peroxide of hydrogen
B.) Neomagnol
C.) Peroxide of hydrogen + Neomagnol 
D.) Sodium-hypochlorite
E.) Alcohol

Answer 11

D

Question 12

Ca(OH)2-containing material usable for the medication of the root canal is: 
A.) GM (Gangraena-Merz)-paste
B.) PBSC-mix
C.) Solvidont
D.) N2 Universal
E.) Chlumsky’s solution

Answer 12

A

Question 13

75. Ordinarily it has the same number of root canals as roots:
76. Upper canine
77. Lower second premolar 3. Lower canine
78. Upper first premolar

Answer 13

E

Question 14

Its root canal normally straight and wide:

1. Upper canine
2. Distobuccal root of the upper first molar
3. Palatal root of the upper second molar
4. Mesiobuccal root of the upper second molar

Answer 14

C

Question 15

Its root canal ordinarily narrow and divided:

1. Lower first incisor
2. Mesial root of the lower first molar
3. Lower first premolar
4. Lower second incisor

Answer 15

B

Question 16

Is suitable for reaming:

1. Kerr reamer
2. Kerr-flex file
3. Hedstrom file
4. Kerr file

Answer 16

B

Question 17

Its working motion is circumferential:

1. Kerr-flex file
2. Hedström file
3. Kerr-file
4. Kerr reamer

Answer 17

A

Question 18

The advantages of the orifice shaper:

1. It is usable for removing carious lesion
2. Enlarges the coronal part of the root
3. They are rotary instruments
4. Diminish the curvature of the root canal

Answer 18

B

Question 19

What is characteristic of the chronic apical periodontitis? 1. Periodical sensitivity to percussion

2. The periodontal space is widened on the radiograph
3. An overt bone loss on the radiograph
4. Decreased sensitivity to cold stimuli

Answer 19

A

Question 20

A. Giromatic
B. Endo-Cursor
C. Both
D. Neither
END-239. It turns the instrument only by 90 degree
END-240. The instrument movement can also be vertical
END-241. Usable with hand instruments
END-242. Usable at high rpm (over 10 000)

Answer 20

239 - C
240 - B
241 - B
242 - D