Endodontics

Question 1

How to differentiate acute apical abscess from lateral perio abscess

Answer 1

Vitality testing or probing

Question 2

Other term for chronic focal sclerosing osteomyeletis

Answer 2

Condensing osteitis

Question 3

An inflam of periosteum adjacent to the area of an infected tooth with periapical lesion

Answer 3

garve’s osteitis

Question 4

An exophytic overgrowth of pulpal tissue with a present epithelial surface

Answer 4

Pulp polyp or chronic hyperplastic pulpitis

Question 5

Type of root fracture with worst prognosis

Answer 5

Coronal root fracture

Question 6

Type of fracture with best prognosis

Answer 6

Apical root fracture

Question 7

Indication for pulpotomy

Answer 7

Vital tooth with provoked pain
1.8 mm dentin thickness bet pulp and carious lesion
Root length not more than 2/3 of total length

Question 8

Partial pulpotomy aka

Answer 8

Cvek pulpotomy

Question 9

C shaped canal tooth

Answer 9

Md 2nd molar

Or

Mx 2nd pm

Question 10

Pinpoint mechanical exposure measurement

Answer 10

0.25 - 0.50 mm

Question 11

Common ant with bifurcation

Answer 11

Md canines

Question 12

Most common ant tooth assoc with 2 orifice

Answer 12

Md lateral incisors

Question 13

Canal orifice that is most difficult to locate

Answer 13

MB2 of mx 1st molars

Question 14

Post tooth with highest endodontic failure rate

Answer 14

Mx 1st molars

Question 15

MB2 of mx 1st molar is usually loc

Answer 15

Bet Mb1 and palatal

Question 16

Most apical end of root

Answer 16

Anatomical apex or radiographic apex

Question 17

0.5 mm from apical anatomical apex

Answer 17

Apical foramen

Question 18

0.5 from apical foramen in region of DCJ

Answer 18

Apical constriction

Question 19

Files movt

Answer 19

Push and pull

Clockwise and counterclockwise

Question 20

reamers movt

Answer 20

Half turn twist (clockwise)

Pull

Question 21

For shaving dentin and removing old fillings

Answer 21

Reamers

Question 22

Cuts only during pulling

Answer 22

Hedstrom

Question 23

Best chelating agent

Answer 23

Ethylene diamine tetraacetic acid (EDTA)

Question 24

CaOh is placed for how many days

Answer 24

10 days

Question 25

Ideally the apical point where canal prep is to end, is loc in

Answer 25

1 mm
2 mm acceptable

Anatomical apex

Question 26

GP made from

Answer 26

Zinc oxde

Question 27

How many nega culture test before u proceed to OBT

Answer 27

2

Question 28

Materials used to remove gutta percha during retreatment (3)

Answer 28

Eucalyptus oil
Xylene (xylol)
Chloroform

Question 29

Materials used to remove silver cones during retreatment

Answer 29

Spoon excavator

Mosquito hemostat- removal of broken files

Question 30

After rct when should it be recalled

Answer 30

6 mos

To know if successful - 2 yrs

Question 31

Chemically induced apical closure

Answer 31

Apexification

Question 32

Indication for apexification

Answer 32

Non vital young perm teeth with open apex

Question 33

Physiologic development of apex

Indication???

Answer 33

Apexogenesis

For vital young perm teeth with open apex

Question 34

Endodontic bleaching (2)

Answer 34

Hydrogen peroxide

Sodium perborate

Question 35

Apicoectomy aka

Answer 35

Root end surgery

Question 36

Retrograde filling (2)

Answer 36

Mta

Zinc free amalgam

Question 37

Drilling a hole in a bone

Answer 37

Trephination

Or surgical window

Question 38

Autoclave composition

Answer 38

250 F (121C) for 20 to 30 mins 15 psi

Question 39

Dry heat

Answer 39

320 F (160 C) for 1 hr

Question 40

Chairside sterilization (2)

Answer 40

Glass bead

Salt sterilizer

Question 41

Glass bead

Answer 41

Uses 1mm metal cup bead 
450 F (232 C) for 10 sec

Question 42

Best for heat sensitive materials

Answer 42

Quaternary ammonium componds - best

Alcohol

Question 43

Apicoectomy bevel???

Answer 43

45 degrees bevel