Endodontics SDLE MCQ | Part 2

DentQuiz SDLE Mock Exam Instruction

To mark a question and come back to it later, click the Bookmark icon.
For the best experience, use a computer and switch to full screen button (from the top left corner).
You can review and change your answers before clicking Next.
Explanations will appear after each question to help you understand the correct answer.
Your results will be shown right after you finish the exam.
This is a fresh attempt — previous answers or bookmarks won't be saved.
The source of the questions and answers is recent Rafee’ Al-Maqam files. Special thanks to رفيع المقام.
Answers are based on colleagues best efforts and may not be 100% accurate. If you believe an answer is incorrect, please click the Report button to let us know.

Please fill in your details to continue

NameEmailPhone Number

1 / 50

Category: Endodontics

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

Start endo and follow up

Extraction

Start endo then perio

Start perio

2 / 50

Category: Endodontics

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

Lower molar

Lower premolar

Upper premolar

Upper molar

3 / 50

Category: Endodontics

3) 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

4 / 50

Category: Endodontics

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

External replacement resorption

Internal resorption

Surface resorption

Cervical resorption

5 / 50

Category: Endodontics

5) Which rotary file system uses reciprocation movement?

K-file

WaveOne

H-file

ProTaper

6 / 50

Category: Endodontics

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

Pulp necrosis

External resorption

Internal resorption

Pulp obliteration

7 / 50

Category: Endodontics

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

4 weeks

2 weeks

24 hours

3 days

8 / 50

Category: Endodontics

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

Symptomatic irreversible pulpitis

Necrosis

Reversible pulpitis

Periodontitis

9 / 50

Category: Endodontics

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

Good

Questionable

Poor

Fair

10 / 50

Category: Endodontics

10) Which instrument has an active cutting tip?

Barbed broach

Reamer

H file

K file

11 / 50

Category: Endodontics

11) A necrotic tooth without swelling requires what treatment?

Start endo

Antibiotics

Extraction

Follow up

12 / 50

Category: Endodontics

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

External resorption

Fracture

Calcification

Internal resorption

13 / 50

Category: Endodontics

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

1 Day

1 Hour

1 Week

1 Month

14 / 50

Category: Endodontics

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

True combined

Perio primary with endo secondary

Endo primary with perio secondary

Periodontal combined

15 / 50

Category: Endodontics

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

Curved canals

Excessive force

Inadequate access cavity

Poor file quality

16 / 50

Category: Endodontics

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

Extract the coronal segment

Splint the tooth

Observe and follow up

Extract both segments

17 / 50

Category: Endodontics

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

Pulpotomy

RCT

Direct pulp capping

Partial pulpotomy

18 / 50

Category: Endodontics

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

Primary endo secondary perio

Endo only

Primary perio secondary endo

Perio only

19 / 50

Category: Endodontics

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

Perform endo surgery

Reassure the patient

Prescribe analgesics

Redo RCT

20 / 50

Category: Endodontics

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

Pulp polyp

Reversible pulpitis

Pulp necrosis

Irreversible pulpitis

21 / 50

Category: Endodontics

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

Good

Fair

Questionable

Poor

22 / 50

Category: Endodontics

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

Replacement

Surface

External cervical

Internal

23 / 50

Category: Endodontics

23) How to check for crown and root fracture?

X-ray

Tooth slooth

Seating jig

Percussion

24 / 50

Category: Endodontics

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

Glass ionomer

Cavit

IRM

Fermit

25 / 50

Category: Endodontics

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

Devitalization

Possible palatal displacement of permanent

Hypoplasia

No effect

26 / 50

Category: Endodontics

26) How far should root canal preparation extend?

1 to 2 mm before the radiographic apex

At the radiographic apex

0.5 to 1 mm before the radiographic apex

Beyond the radiographic apex

27 / 50

Category: Endodontics

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

Distal

Mesiobuccal

Buccal

Mesiolingual

28 / 50

Category: Endodontics

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

0.66

0.36

0.3

0.72

29 / 50

Category: Endodontics

29) 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?

Asymptomatic irreversible pulpitis

Symptomatic irreversible pulpitis

Normal pulp and apical tissue

Necrotic pulp

30 / 50

Category: Endodontics

30) Why is the smear layer removed during endo?

None

To allow sealer penetration

To reduce sealer setting time

To improve antimicrobial activity

31 / 50

Category: Endodontics

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

Normal

Failed endo

Vertical root fracture

Periapical abscess

32 / 50

Category: Endodontics

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

4

1

3

2

33 / 50

Category: Endodontics

33) What is the composition of PCA?

EDTA, CaOH, glycol

None

EDTA, NaOCl, glycol

EDTA, urea peroxide, glycol

34 / 50

Category: Endodontics

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

Good

Fair

Poor

Questionable

35 / 50

Category: Endodontics

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

File separation

Coronal perforation

Normal

Apical perforation

36 / 50

Category: Endodontics

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

0.3

0.34

0.28

0.32

37 / 50

Category: Endodontics

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

X-ray

Methylene blue

Bubble test

CBCT

38 / 50

Category: Endodontics

38) 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?

Reversible pulpitis

Necrotic pulp

Asymptomatic irreversible pulpitis with normal apical tissue

Asymptomatic irreversible pulpitis with symptomatic apical tissue

39 / 50

Category: Endodontics

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

0.04mm

0.2mm

0.02mm

0.4mm

40 / 50

Category: Endodontics

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

Reimplant immediately

Keep it in milk

Extraoral RCT

Splint it directly

41 / 50

Category: Endodontics

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

No treatment

Immediately splint with rigid splint

Extract the tooth

Immerse in 2% sodium fluoride for 20 minutes and splint

42 / 50

Category: Endodontics

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

Extract #38

No treatment

Inform the patient about the cyst

Treat #37 and inform the patient

43 / 50

Category: Endodontics

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

Hypoplasia

No effect

Palatal orientation of crown

Devitalization

44 / 50

Category: Endodontics

44) Why is the smear layer removed during endo?

To allow bactericidal properties

To reduce sealer setting time

None

To improve sealer adhesion

45 / 50

Category: Endodontics

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

Examination and transillumination

PA

Percussion

Palpation

46 / 50

Category: Endodontics

46) 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?

RCT for coronal part only

Extraction

Pulpotomy

RCT for all roots

47 / 50

Category: Endodontics

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

Explorer

Ultrasonic

File

Reamer

48 / 50

Category: Endodontics

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

Intrusion

Lateral luxation

Extrusion

Avulsion

49 / 50

Category: Endodontics

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

Minor apical constriction

Major apical constriction

Anatomical apex

Radiographic apex

50 / 50

Category: Endodontics

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

6 months

8 months

12 months

4 months

Your score is

The average score is 73%

0%

Please rate this exam and leave a comment with any notes or suggestions.

Anonymous feedback

Thank you for your feedback

Report a question

Related Articles

Endodontics SDLE MCQ | Part 5

Endodontics SDLE MCQ | Part 4

Endodontics SDLE MCQ | Part 3

Endodontics SDLE MCQ | Part 1

Leave a Reply Cancel reply