AGD Endodontic Diagnosis and Treatment 2

Question 1

A patient presents with a tooth that is tender to percussion but has no response to cold testing. Radiographically, there is a periapical radiolucency. What is the most likely diagnosis?

Accepted Answer

Pulp necrosis with symptomatic apical periodontitis

Answer

Acute apical abscess

Answer

Irreversible pulpitis

Answer

Chronic hyperplastic pulpitis

Question 2

Which instrument is used to determine the working length electronically during root canal treatment?

Accepted Answer

Electronic apex locator

Answer

Endodontic explorer

Answer

Gutta-percha cone

Answer

Spreader

Question 3

During canal preparation, a file separates within the apical third of a curved canal. What is the FIRST recommended step?

Accepted Answer

Attempt ultrasonic retrieval if trained

Answer

Immediately refer the patient to an endodontist

Answer

Pack gutta-percha around the fragment and obturate

Answer

Extract the tooth immediately

Question 4

Sodium hypochlorite is used as an irrigant during root canal treatment primarily because of its ability to:

Accepted Answer

Dissolve organic tissue and kill bacteria

Answer

Lubricate canal walls

Answer

Smear layer removal

Answer

Prevent file breakage

Question 5

A tooth diagnosed with a chronic apical abscess most commonly presents with:

Accepted Answer

A sinus tract draining to the mucosa

Answer

Severe spontaneous pain and swelling

Answer

Marked sensitivity to cold

Answer

No radiographic findings

Question 6

Which root canal sealer is classified as a bioceramic material and is known for its excellent biocompatibility?

Accepted Answer

EndoSequence BC Sealer

Answer

AH Plus

Answer

Pulp Canal Sealer

Answer

Roth 811

Question 7

In a patient with a fully formed apex, which obturation technique uses thermoplasticized gutta-percha injected into the canal?

Accepted Answer

Thermafil technique

Answer

Cold lateral condensation

Answer

Single-cone technique

Answer

Warm vertical compaction