Endodontics SDLE MCQ | Part 2

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NameEmailPhone Number

1 / 50

Category: Endodontics

1) A molar has radiolucency below the furcation, deep probing depth, and is necrotic. What is the diagnosis?

Perio only

Endo only

Primary endo secondary perio

Primary perio secondary endo

2 / 50

Category: Endodontics

2) A pediatric patient has deep caries with intermittent pain provoked by sweets. What is the diagnosis?

Pulp polyp

Pulp necrosis

Reversible pulpitis

Irreversible pulpitis

3 / 50

Category: Endodontics

3) How many canals does an upper first premolar typically have?

1

3

2

4

4 / 50

Category: Endodontics

4) How long should a cervical tooth fracture be splinted?

6 months

12 months

4 months

8 months

5 / 50

Category: Endodontics

5) A patient presents with trauma and pulp exposure 1 day ago. What is the treatment?

Partial pulpotomy

RCT

Direct pulp capping

Pulpotomy

6 / 50

Category: Endodontics

6) What is the most common cause of a broken file during RCT?

Curved canals

Poor file quality

Excessive force

Inadequate access cavity

7 / 50

Category: Endodontics

7) A tooth had RCT, failed, and was re-treated. An apical abscess is present. What is the prognosis?

Questionable

Poor

Fair

Good

8 / 50

Category: Endodontics

8) Calculate D9 of a file with size 30 and taper 0.04.

0.72

0.36

0.3

0.66

9 / 50

Category: Endodontics

9) A necrotic tooth without swelling requires what treatment?

Start endo

Antibiotics

Extraction

Follow up

10 / 50

Category: Endodontics

10) A 75-year-old patient presents with a broken MO restoration. Probing depth is normal, cold test shows no response, EPT is positive, and percussion/palpation is normal. What is the diagnosis?

Symptomatic irreversible pulpitis

Normal pulp and apical tissue

Necrotic pulp

Asymptomatic irreversible pulpitis

11 / 50

Category: Endodontics

11) How long should calcium hydroxide be placed in the canal for antimicrobial effect?

4 weeks

24 hours

2 weeks

3 days

12 / 50

Category: Endodontics

12) A sound tooth has pain on percussion and no response to cold test. What is the diagnosis?

Perio primary with endo secondary

Periodontal combined

True combined

Endo primary with perio secondary

13 / 50

Category: Endodontics

13) Why is the smear layer removed during endo?

None

To allow sealer penetration

To improve antimicrobial activity

To reduce sealer setting time

14 / 50

Category: Endodontics

14) Why is the smear layer removed during endo?

To improve sealer adhesion

None

To allow bactericidal properties

To reduce sealer setting time

15 / 50

Category: Endodontics

15) A patient has a horizontal root fracture between the middle and apical thirds. The fracture line is radiopaque, and there is no response to cold test. What is the treatment?

Extraction

Pulpotomy

RCT for all roots

RCT for coronal part only

16 / 50

Category: Endodontics

16) A molar tooth has a deep restoration and one canal is obliterated. What is the likely cause?

Fracture

Calcification

External resorption

Internal resorption

17 / 50

Category: Endodontics

17) A patient has implants in the anterior lower jaw. The adjacent natural tooth is mobile (grade 3) with a very short root and no pain on endo tests. What is the treatment?

Perio then endo

Endo and follow up

Perio and follow up

Endo immediately and adjunctive Perio

18 / 50

Category: Endodontics

18) A patient feels discomfort in a lower bridge (44-46). Tooth #44 has a tear-drop radiolucency. What is the diagnosis?

Failed endo

Vertical root fracture

Normal

Periapical abscess

19 / 50

Category: Endodontics

19) What is the likely outcome of intrusion of a primary incisor?

Possible palatal displacement of permanent

Devitalization

Hypoplasia

No effect

20 / 50

Category: Endodontics

20) How to check for crown and root fracture?

Percussion

Tooth slooth

X-ray

Seating jig

21 / 50

Category: Endodontics

21) A calcified canal is difficult to locate. What is the best test?

Methylene blue

X-ray

Bubble test

CBCT

22 / 50

Category: Endodontics

22) What is the composition of PCA?

None

EDTA, urea peroxide, glycol

EDTA, NaOCl, glycol

EDTA, CaOH, glycol

23 / 50

Category: Endodontics

23) A tooth with deep caries and normal pulp is sensitive to percussion but not tender. Upon caries removal, pulp exposure occurs. What is the diagnosis?

Asymptomatic irreversible pulpitis with symptomatic apical tissue

Necrotic pulp

Asymptomatic irreversible pulpitis with normal apical tissue

Reversible pulpitis

24 / 50

Category: Endodontics

24) Which temporary filling material provides the best sealing ability after RCT?

Glass ionomer

Cavit

Fermit

IRM

25 / 50

Category: Endodontics

25) A patient has pain on biting on teeth #44 and #45. Large amalgam restorations are present. What is the best diagnostic test?

Percussion

Examination and transillumination

Palpation

PA

26 / 50

Category: Endodontics

26) What is D9 of a rotary file with size 10 and taper 0.02?

0.3

0.34

0.32

0.28

27 / 50

Category: Endodontics

27) A patient has irreversible pulpitis in tooth #37 and an impacted #38 with a large cyst. What is the first step?

No treatment

Inform the patient about the cyst

Extract #38

Treat #37 and inform the patient

28 / 50

Category: Endodontics

28) What is the effect of intrusion of primary central incisors on the permanent successor?

No effect

Hypoplasia

Palatal orientation of crown

Devitalization

29 / 50

Category: Endodontics

29) Which tooth is most difficult to anesthetize in symptomatic irreversible pulpitis?

Lower premolar

Upper molar

Upper premolar

Lower molar

30 / 50

Category: Endodontics

30) A tooth has two broken files beyond the apex. What is the prognosis?

Fair

Good

Questionable

Poor

31 / 50

Category: Endodontics

31) During RCT, an apex locator makes a sound when inserted. What is happening?

Coronal perforation

Normal

Apical perforation

File separation

32 / 50

Category: Endodontics

32) Where should the obturation stop in the root canal?

Major apical constriction

Minor apical constriction

Radiographic apex

Anatomical apex

33 / 50

Category: Endodontics

33) What is the best instrument to locate the orifice in endo?

Reamer

Explorer

File

Ultrasonic

34 / 50

Category: Endodontics

34) Which rotary file system uses reciprocation movement?

H-file

K-file

ProTaper

WaveOne

35 / 50

Category: Endodontics

35) Which instrument has an active cutting tip?

K file

Barbed broach

H file

Reamer

36 / 50

Category: Endodontics

36) How long should calcium hydroxide be placed in the canal for optimal antimicrobial effect?

1 Week

1 Day

1 Month

1 Hour

37 / 50

Category: Endodontics

37) What is the consequence of direct pulp capping in a primary tooth?

Pulp necrosis

Pulp obliteration

Internal resorption

External resorption

38 / 50

Category: Endodontics

38) Pain increases with hot food and decreases with cold. What is the likely diagnosis?

Symptomatic irreversible pulpitis

Reversible pulpitis

Necrosis

Periodontitis

39 / 50

Category: Endodontics

39) What type of trauma causes a central incisor to appear longer than adjacent teeth?

Lateral luxation

Avulsion

Intrusion

Extrusion

40 / 50

Category: Endodontics

40) A patient has an endo-perio lesion with deep pockets. What is the management?

Extraction

Start endo and follow up

Start perio

Start endo then perio

41 / 50

Category: Endodontics

41) How far should root canal preparation extend?

0.5 to 1 mm before the radiographic apex

At the radiographic apex

1 to 2 mm before the radiographic apex

Beyond the radiographic apex

42 / 50

Category: Endodontics

42) An X-ray shows short roots with bone replacement. What is the diagnosis?

Surface resorption

External replacement resorption

Internal resorption

Cervical resorption

43 / 50

Category: Endodontics

43) A patient has discomfort while biting and a gap between gutta-percha and a metal post. What is the management?

Prescribe analgesics

Perform endo surgery

Reassure the patient

Redo RCT

44 / 50

Category: Endodontics

44) A 9-year-old child has a double horizontal root fracture. What is the management?

Observe and follow up

Splint the tooth

Extract the coronal segment

Extract both segments

45 / 50

Category: Endodontics

45) A tooth with a history of trauma 20 years ago has 1/3 of the crown remaining. What is the prognosis?

Questionable

Good

Fair

Poor

46 / 50

Category: Endodontics

46) A 13-year-old with an avulsed tooth kept in milk. What is the best management?

Extraoral RCT

Reimplant immediately

Splint it directly

Keep it in milk

47 / 50

Category: Endodontics

47) An unclear X-ray is taken with a mesial shift. Which structure is mesial?

Mesiolingual

Buccal

Distal

Mesiobuccal

48 / 50

Category: Endodontics

48) A tooth was avulsed and kept in milk for 3 hours. What is the management?

Extract the tooth

Immerse in 2% sodium fluoride for 20 minutes and splint

Immediately splint with rigid splint

No treatment

49 / 50

Category: Endodontics

49) What type of resorption is caused by non-vital bleaching?

External cervical

Internal

Replacement

Surface

50 / 50

Category: Endodontics

50) What is the maximum size of an endo voxel?

0.4mm

0.2mm

0.04mm

0.02mm

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The average score is 69%

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