AGD Endodontics and Pulpal Therapy 2

Question 1

Which irrigant is most effective at dissolving necrotic pulp tissue during root canal treatment?

Accepted Answer

Sodium hypochlorite 5.25%

Answer

Sodium hypochlorite is the gold standard irrigant due to its ability to dissolve organic tissue and antimicrobial properties.

Question 2

What is the primary purpose of EDTA in root canal irrigation?

Accepted Answer

Remove the smear layer by chelating calcium

Answer

EDTA chelates calcium ions in dentin, effectively removing the inorganic smear layer created during instrumentation.

Question 3

A patient presents with spontaneous, lingering pain that worsens with heat but is relieved by cold. What is the most likely diagnosis?

Accepted Answer

Irreversible pulpitis

Answer

Pain that lingers after stimulus removal and relief with cold indicates irreversible pulpitis with hyperemia.

Question 4

Which obturation technique uses thermoplasticized gutta-percha injected into the canal?

Accepted Answer

Thermafil

Answer

Thermafil uses a plastic carrier coated with alpha-phase gutta-percha that is heated and inserted into the canal.

Question 5

The electronic apex locator measures which property to determine the apical constriction?

Accepted Answer

Impedance using multiple frequencies

Answer

Modern apex locators use multi-frequency impedance measurement to accurately locate the apical constriction.

(AGD) Academy of General Dentistry Certification Practice Test