Endodontics II Test

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Endodontics II Test

1 / 60

Which tooth has tuberculum Carabelli :

a. First upper premolar

b. Permanent canine

c. First upper molar

d. Second upper molar

2 / 60

Anesthetic testing is most effective in localizing pain:

a. To specific tooth

b. To poster tooth

c. To the Mandible and Maxilla

d. Across of mandible of the face

3 / 60

The most widely used irrigant displaying optimal cleansing bactericidal properties is:

a. Saline

b. Formolcresol

c. Sodium hypochlorite

d. Hydrogen perxoxide

4 / 60

Can assess cavity be modified during the root canal procedure?

a. Yes, if needed

b. No, it should not

c. Always needs to be modified

d. Never

5 / 60

Which of the following tests is used detect periodontal status?

a. Mobility test

b. Bite test

c. Percussion

d. Palpation

6 / 60

CHX-Plus is a combination product of:

a. NaOCl + Detergent

b. EDTA + Detergent

c. Chlorhexidine + Detergent

d. H2O2+ Detergent

7 / 60

Which of the following statements is true?

a. Use of NaOCl as the final rinse following EDTA should probably be avoided as this causes dentin erosion.

b. Use of NaOCl as the final rinse following EDTA is neither desirable nor prohibited.

c. Use of NaOCl as the final rinse following EDTA is desirable.

d. Use of NaOCl as the final rinse following EDTA is fine, but chlorhexidine may be better than NaOCl as a final rinse.

8 / 60

Which dentin plays a role in creating the sclerosis of the dentinal tubules?

a. Secondary dentin

b. Primary dentin

c. Intratubular dentin

d. Peritubular dentin

9 / 60

Which device test pulp vitality based on the determination of blood flow?

a. Pulp oximetry

b. Electric pulp tester

c. CBCT

d. Transillumination

10 / 60

What shape is the access cavity for upper and lower molars?:

a. Round

b. Triangle

c. Ovoid

d. Oblong

11 / 60

When treating vital cases multi-visits, scheduling between visit should…:

a. 2-3 days.

b. 5-7 days.

c. 2 weeks.

d. 10-12 days.

12 / 60

What may not be one of the ways to manage the bleeding during endodontic surgery?

a. Proper local anesthesia

b. Premedication with coagulating factors

c. Electrocoagulation

d. Obstruction by mechanical means, such as plugging bone cavity with bone wax.

13 / 60

What is the intended use of MTAD?

a. As the main irrigant

b. As the initial rinse before the root canal preparation

c. As a lubricant

d. As a final rinse to disinfect the root canal system and remove the smear layer

14 / 60

Two main types of base materials are:

a. ZOE and GIC

b. ZOE and Ca(OH)2

c. MTA and Ca(OH)2

d. GIC and MTA

15 / 60

Which of the following protocols will give you the most favorable outcome to emergency treat irreversible pulpitis with pulp exposure if time is limited?

a. Pulp extirpation

b. Pulpectomy

c. Pulpotomy

d. Pulp capping

16 / 60

Which solvent can be used to soften hard-setting cements in a retreatment case?

a. Xylene

b. Chloroform

c. Tetrachloroethylene

d. Halothane

17 / 60

Which is the amount of anesthetic solution injected in intrapulpal injection?

a. 0.2 ml

b. 1 ml

c. 0.5 ml

d. 0.7 ml

18 / 60

What type of dentine has to be removed during the indirect pulp capping procedure?

a. Tertiary dentine

b. Affected dentine

c. Infected dentine

d. Reparative dentine

19 / 60

Which of the following is the best solution for irrigation in root canal treatment?

a. Sodium hypochlorite

b. Anesthesia solution

c. Hydrogen peroxide

d. Saline, distilled water

20 / 60

The properties of chlorhexidine are as follows except one:

a. No reduced activity in the presence of organic matter

b. Lower toxicity than NaOCl

c. No tissue-dissolving capability

d. No bad smell

21 / 60

A patient presents wet a draining sinus tract in labial vestibule of a maxillary central incisor. To confirm your diagnosis. About the origin of pathose you should:

a. Open the concerned root chamber

b. Takin the bite- wing radiograph.

c. Tread gutta- percha through the root canal and expose the radiograph

d. Tread gutta- percha through the tract and expose the radiograph

22 / 60

ភាគច្រើន Mandibular second Premolar មាន

a. One canal one foramen

b. Two canals two foramen

c. Two canals One foramen

d. All of above

23 / 60

What is the loading dose of penicillin VK?

a. 1000 mg

b. 500 mg

c. 300 mg

d. 600 mg

24 / 60

During history taking, a patient complains of pain. Which of the following characteristics of the pain complaint is least relevant?

a. Site

b. Severity

c. Tolerance

d. Character

25 / 60

Which one of the following conditions can make an electric pulp tester get a false-positive result?

a. Immature apex

b. Poor contact of pulp tester to tooth

c. Anxious patient

d. Drugs that increase patient’s threshold for pain

26 / 60

What will happen if we do not completely remove all the contents of pulp chamber?

a. It is hard to locate canal orifices

b. It is impossible to gain straight line access

c. Nothing happens

d. Contamination or infection of the endodontic space can occur

27 / 60

MTAD and Tetraclean are a mixture of:

a. Amoxicillin, citric acid, and detergent

b. Doxycycline, citric acid, and detergent

c. Tetracycline, citric acid, and detergent

d. Clindamycin, citric acid, and detergent

28 / 60

Which is the amount of anesthetic solution injected in intraosseous injection?

a. 1 ml

b. 0.2 ml

c. 0.5 ml

d. 0.7 ml

29 / 60

Percussion testing:

a. Different pain of periodontal origin

b. Indicates tooth fracture

c. Must be performed with blunt instrument

d. Stimulus fibers in the periodontal ligament

30 / 60

Which is not one of the chemicals used to control the bleeding during endodontic surgery?

a. Ferric sulfate

b. Aluminum chlorite

c. Epinephrine

d. Formocresol

31 / 60

Which type of post should be used when more than3/4 coronal tooth structure is lost (reduced wall height)?

a. Metal post

b. Cast gold post

c. Fiber or ceramic post

d. No post is needed

32 / 60

At the inner surface of the dentin, the number of dentinal tubules is:

a. 500/ mm2

b. 50000/ mm2

c. 50/ mm2

d. 5000/ mm2

33 / 60

What is the objective of coronal access?

a. To enable a small file to be placed down the canal openings

b. To locate the canal openings

c. To expose and unroof the pulp chamber to gain visibility, icluding removal of pulp horns

34 / 60

For the extripation of entire pulp, necrotic debris, and foreign material, one should use

a. Files

b. Raemers

c. Bures

d. Barbed broaches

35 / 60

Which medication is usually used for emergency treatment of irreversible pulpitis?

a. MTA

b. Ca(OH)2

c. Eugenol

d. Formocresol

36 / 60

បុរសម្នាក់អាយុ២០ឆ្នាំ បានត្អួញត្អែរថាឈឺធ្មេញខាងឆ្វេងលើ with thermal stimuli ។ អ្នកជំងឺ បាននិយាយ ថា ធ្លាប់បានព្យាបាលធ្មេញ #24។ The cause of the pain could be:

a. Remaining vital pulp tissue at the apical third of buccal root

b. It must be another tooth and not #24

c. Debris pushed through the apical foramen of the palatal root

d. Over instrument of the palatal canal

37 / 60

Which of the following is not a desirable property of sealers?

a. Tissue tolerance

b. No shrinkage with setting

c. Bacteriostatic

d. Radiolucent

38 / 60

Direct pulp capping used for

a. Tooth not natural color

b. Trauma of the tooth

c. With a small exposure of the pulp

d. Exposure of the pulp, such as 2to 3 mm

39 / 60

Decreased size of pulp chamber and root canals of aged teeth is due to:

a. Peritubular dentin

b. Mantle dentin

c. Primary dentin

d. Secondary dentin

40 / 60

ក្មេងប្រុសម្នាក់អាយុ១២ឆ្នាំ មានចំនិចតូចៗព៌ណក្រហមនៅ pulp ដែលរីកធំនៅលើធ្មេញថ្គាមធំខាង ក្រោម។ What may be the possible diagnosis?:

a. Pulp hyperemia

b. Pulpal granuloma

c. Gum boil

d. Pulp polyp

41 / 60

The main pathway of communication between Endodontium and Periodontium is via:

a. lateral canals

b. apical foramina

c. secondary canals

d. dentinal tubules

42 / 60

Why shouldn’t a tooth with necrotic pulp and some swelling be left open between appointments?

a. Because there is a risk of root canal contamination with other new microorganisms which might be harder to be killed

b. Because the patient usually does not like his/her tooth to be left open

c. Because this will cause endodontic flare-ups

d. There are more risks of fracture if the access cavity is not temporarily sealed.

43 / 60

Which material cannot be used as a base for composite restoration?

a. ZOE

b. MTA

c. GIC

d. Ca(OH)2

44 / 60

If an instrument is broken in the middle third of a canal during the root canal preparation of a tooth with a periapical lesion, but the separated instrumented can be retrieved without much loss of root dentin, how would the prognosis be like?

a. The prognosis is guarded

b. The prognosis should not be affected

c. The case will absolute fail

d. The prognosis is poor

45 / 60

Permanent teeth with three roots are :

a. Second lower molar

b. First upper premolar

c. First lower molar

d. Second upper molar

46 / 60

K files used by

a. Axial movement

b. All of above

c. Enlargement the canals

d. Less aggressive the canal wall than the H files

47 / 60

What shape is the access cavity for upper and lower incisors?:

a. Ovoid

b. Round

c. Oblong

d. Triangle

48 / 60

Zinc-oxide eugenol cement has all the following properties except one which is:?

a. Anti-bacterial

b. Fluoride releasing

c. Sedative

d. Anti-inflammatory

49 / 60

Which material is not used as a retrograde filling material?

a. IRM

b. Amalgam

c. MTA

d. Zinc phosphate cement

50 / 60

Which of the following statements is true?

a. CBCT cannot help differentiating between granuloma and cyst.

b. Apical periodontitis always appears as periapical radiolucencies

c. Granuloma and cyst cannot be differentiated histologically

d. Granuloma and cyst cannot be differentiated radiographically

51 / 60

Single appointment endodontic therapy is contraindicated in:

a. cases with severe anatomical and procedural difficulties.

b. fractured anterior teeth where aesthetics is a concern.

c. patients requiring sedation or operating room procedures.

d. when the patient is physically unable to return for completion.

52 / 60

Which one is a benefit of narrow apical preparation?

a. Ideal for lateral compaction

b. Less compaction of hard tissue debris in canal spaces

c. Access of irrigants and medications to apical third of root canal is greatly improved.

d. Adequate removal of infected dentin

53 / 60

Gates glidden bur used by

a. All of above

b. Removing GP

c. Flaring of coronal two- thirds

d. Widen the canal when a portion of an instrument has fractured within canal.

54 / 60

Cervical pulpotomy is also called:?

a. Cvek pulpotomy

b. Partial pulpotomy

c. Full pulpotomy

d. Complete pulpotomy

55 / 60

The pulpectomy devitalizing are:

a. Old patient

b. All of above

c. Patient allergy with anesthesia

d. Hypertension patient

56 / 60

The true working length is confirmed with a radiograph using a:

a. Size 8 file

b. Size 15 file

c. Size 10 file

d. Size 20 file

57 / 60

The innervation of the pulp tissue consists of:

a. C-fibers and D-fibers

b. A-fibers and C-fibers

c. A-fibers and B-fibers

d. B-fibers and C-fibers

58 / 60

In the custom solvent-softened cone, how long do we need to dip the tip of the GP cone in chloroform?

a. 3-4 seconds

b. 4-5 seconds

c. 1-2 seconds

d. 2-3 seconds

59 / 60

How does the pulp tissue initially react to irritants?

a. With total pulp necrosis

b. With partial pulp necrosis

c. With the inflammation throughout the pulp

d. With local inflammation in the area subjected to the irritants

60 / 60

How many frame types are commonly used for rubber dam placement?

a. 2

b. 5

c. 4

d. 3

Your score is

The average score is 89%

Any comments?

Any problems/errors or mistakes found while testing, please let us know for modification!

និស្សិតអាចប្រាប់មកកាន់ពួកយើងបានដើម្បីកែកំហុស ឬអំពីបញ្ហាដោយអចេតនាណាមួយដែលកើតមានកំឡុងពេលធ្វើតេស្ត