Endodontics Tests "សូមម៝ឝ្ឝាកុំចែកចាយ Link ដោយគ្មានការអនុញ្ញាឝ"

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Endodontics Knowledge Assessment

Test your understanding of endodontics with this comprehensive quiz designed for students and dental professionals alike. Immerse yourself in various topics related to vital pulp therapy, obturation, and anesthesia techniques.

30 multiple-choice questions
Covers key concepts in endodontics
Ideal for self-assessment and review

60 Questions15 MinutesCreated by CleansingRoot54

1. Which of the following procedures does not aim to preserve and maintain pulp tissue?

Partial pulpotomy

Pulp capping

Pulpectomy

Cvek pulpotomy

2. Two main types of vital pulp therapy are:?

Pulpectomy and pulpotomy

Pulp capping and pulpotomy

Partial pulpotomy and cervical pulpotomy

Direct and indirect pulp capping

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

Affected dentine

Infected dentine

Tertiary dentine

Reparative dentine

Which type of pulp exposure has the lowest success rate when direct pulp capping is performed?

Carious exposure

Mechanical exposure

Traumatic exposure

Iatrogenic exposure

The procedure in which only a small portion of coronal pulp (1-3 mm) is removed is called:

Full pulpotomy

Cervical pulpotomy

Stepwise excavation

Cvek pulpotomy

Which is the most commonly used pulp-capping material?

Calcium Hydroxide

Glass Ionomer

Zinc Oxide Eugenol

Mineral trioxide aggregate

Which of the following is defined as a treatment, which aims to preserve and maintain the pulp tissue that has been compromised but not destroyed, by caries, trauma or restorative procedures, in a healthy state?

Indirect pulp capping

Vital pulp therapy

Direct pulp capping

Pulpotomy

Which of the following factors does not affect the outcome of vital pulp therapy?

Preoperative pulpal status

Quality of the final restoration

The pulp capping material used

Patient’s medical conditions

Which pulpal condition can be treated with vital pulp therapy?

Irreversible pulpitis

Reversible pulpitis

Pulpal polyp

Hyperplasic pulpitis

What is the main advantage of stepwise excavation?

Complete caries removal

Easier to be performed than indirect pulp capping without re-entry

No risk of pulp exposure at all

Has higher success rates than indirect pulp capping without re-entry

Cervical pulpotomy is also called:?

Cvek pulpotomy

Full pulpotomy

Partial pulpotomy

Complete pulpotomy

Which procedure must be done at least in two visits?

Indirect pulp capping without re-entry

Direct pulp capping

Pulpotomy

Stepwise excavation

Which are the two commonly used material for indirect pulp capping?

Calcium hydroxide and zinc-oxide eugenol cement

Calcium hydroxide and mineral trioxide aggregate

Calcium hydroxide and resin-modified glass ionomer cement

Calcium hydroxide and Cavit

Why do we need to obturate?

To prevent infection/reinfection of treated root canals.

To disinfect the treated root canals.

To facilitate the shaping of the root canals.

To make root canals radiopaque.

Endodontic failures related to obturation can be caused by:?

Missed canal

Inadequate cleaning of the root canal system

Vertical root fracture

Horizontal root fracture

Which of the following is not a potential cause of obturation-related failure?

Lack of apical seal

Lack of coronal seal

Lack of lateral seal

Lack of primary seal

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

Tissue tolerance

Radiolucent

Bacteriostatic

No shrinkage with setting

Which of the following is a desirable property of an ideal sealer?

Insoluble to tissue fluid

Insoluble in solvent

Soluble to tissue fluid

Insoluble in solvent but soluble to tissue fluid

Which solvent is commonly used to make a custom solvent-softened cone technique?

EDTA

Chloroform

Lubricant

AH26

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

1-2 seconds

2-3 seconds

3-4 seconds

4-5 seconds

Which is not a factor to consider when making a decision about the timing of obturation?

Degree of difficulty

Patients symptoms

Bacterial culture

Pulp and periradicular status

Which is not a desirable property of an ideal core obturating materials?

Be radiopaque

Be hardly removed from the root canal

Be sterilize or easily sterilized

Be impervious to moisture

In lateral condensation, the master cone is fitted to:?

Within 0.5 mm of the working length (WL)

Within 1 mm of the WL

Within 1.5 mm of the WL

Within 2 mm of the WL

When should spreader or plugger be selected?

Before the cleaning and shaping phase

During the cleaning and shaping phase

Just before the obturation

During the obturation

What are the success rates of pulpectomy if carried out properly?

80-85%

85-90%

90-95%

95-100%

Pulpal anesthesia fails more commonly in which region?

Maxillary anterior teeth

Maxillary posterior teeth

Mandibular anterior teeth

Mandibular posterior teeth

When pulpal anesthesia fails, what should we do as our first attempt to succeed in numbing the pulp?

Repeat the injection and wait for 5-10 minutes

Supplement with intraligamentary or intraossoeus injection

Intrapulpal injection

Use devitalizing agents

Which is a common premedication used when pulpal anesthesia still fails even all attempts have been tried?

NSAIDs + antibiotics

NSAIDs + benzodiazepines

NSAIDs + acetaminophen

NSAIDs + antihistamines

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

0.2 ml

0.5 ml

1 ml

1.8 ml

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

0.2 ml

0.5 ml

1 ml

0.7 ml

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

0.2 ml

0.5 ml

1 ml

0.7 ml

Which are the two most commonly used methods to determine working length?

Radiography and electronic apex locator

Radiography and paper point

Electronic apex locator and paper point

Tactile sense and radiography

To achieve proper isolation for endodontic procedure, which method should we use?

Cotton rolls

Rubber dam placement

Saliva ejector

Keep the patient open his/her mouth

Which of the following is not a reason of using rubber dam?

To prevent aspiration or accidental swallowing of endodontic instruments and irrigants

To provide an aseptic field of operation

To eliminate the need to remove caries before access cavity preparation

To improve visibility

Which thicknesses of rubber dam are preferably used in most situations?

Medium and heavy

Light and medium

Heavy and extra heavy

Medium and extra heavy

Which rubber dam frame is radiopaque?

The Young’s frame

The Star Visi frame

The Nygaard-Ostby frame

The Plast-Frame

Which are the two universal clamp designs?

Ivory 2 and Ivory 9

Ivory 14 and Ivory 14A

Ivory 9 and Ivory 56

Ivory 56 and Ivory 2

Which solution is used to test leakage of rubber dam?

5% iodine tincture

Alcohol

30% hydrogen peroxide

Sodium hypochlorite

Which solution is used to disinfect the operating field after rubber dam placement?

5% iodine tincture

30% hydrogen peroxide

EDTA

Citric acid

Which material is not used to correct rubber dam leakage?

Cavit

Sealants

Composite

Rubber base adhesive

What is the objective of access cavity?

To identify canal orifices

To facilitate cleaning, shaping and obturation

To identify canal orifices and facilitate cleaning, shaping and obturation

To enlarge root canals

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

It is hard to locate canal orifices

It is impossible to gain straight line access

Contamination or infection of the endodontic space can occur

Nothing happens

What is the main reason of discoloration of root treated teeth?

Inadequate cleaning and shaping

Inadequate obturation

Leaving some pulp contents or sealer behind in the pulp chamber

By irrigating with chlorhexidine

Why is straight-line access important?

To decrease procedural errors

To make a more tapered canal preparation

To eliminate the need to completely unroof the pulp chamber

To clean 1/3 coronal of the root canals

Why do we need to conserve tooth structure when preparing access cavity?

Because this is what we always do in dentistry

To avoid unnecessarily weakening the tooth

Because the smaller the access cavity, the simpler the root canal procedure

So that we don’t need to create straight-line access if that means sacrifice more tooth structure

Which of the following is not a procedural error usually caused by improper straight-line access?

Zipping

Ledge

Apical perforation

Furcation perforation

What is an example of non-end cutting bur used in finishing the access cavity?

DG 16

Endo Z bur

Glick # 1

Rosehead bur

What should we preferably do with an unsupported cusp?

Leave as it is

Reduce its height

Protect it with a band

Place some cements or fillings underneath so that it become supported again

Can assess cavity be modified during the root canal procedure?

No, it should not

Never

Yes, if needed

Always needs to be modified

What is the most commonly used irrigant?

Hydrogen peroxide

Chlorhexidine

EDTA

Sodium hypochlorite

The objective of root canal preparation is:

To clean and shape

To clean and fill

To shape and fill

To extirpate the pulp

Step-back technique starts from:?

Coronal to apical

Apical to coronal

Either direction

Coronal to apical 1/3, and then from apex to 1/3 apical

Which type of instruments should be used with balanced force motion?

Hedstrom file

Reamer

Non-end cutting flexible K-file

K-file

Endodontics Tests "សូមម៝ឝ្ឝាកុំចែកចាយ Link ដោយគ្មានការអនុញ្ញាឝ"

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