AGD Endodontic Diagnosis and Treatment 4

Question 1

Vertical root fracture (VRF) in an endodontically treated tooth most characteristically shows which radiographic finding?

Accepted Answer

A 'halo' or 'J-shaped' periapical radiolucency along the root

Answer

Vertical root fractures often present with a 'halo' or 'J-shaped' radiolucency along the lateral aspect of the root due to bone loss on both sides.

Question 2

Mineral trioxide aggregate (MTA) is the preferred material for apexification in immature permanent teeth because it:

Accepted Answer

Induces cementum-like hard tissue and is biocompatible

Answer

MTA creates an apical plug, induces hard tissue formation, and demonstrates superior biocompatibility, making it ideal for apexification procedures.

Question 3

A patient develops paresthesia of the lower lip following extraction of a mandibular molar. Which nerve was most likely affected?

Accepted Answer

Inferior alveolar nerve

Answer

The inferior alveolar nerve runs through the mandibular canal adjacent to molar roots; injury during extraction or endodontic intervention causes lower lip paresthesia.

Question 4

Which diagnostic test best differentiates a crack confined to enamel from one extending into the pulp?

Accepted Answer

Bite test using a Tooth Slooth device

Answer

The Tooth Slooth bite test localizes which cusp is cracked; pain on release (rebound pain) suggests crack extension toward or into the pulp.

Question 5

In regenerative endodontics for immature necrotic teeth, the biological scaffold used to support tissue ingrowth is:

Accepted Answer

A blood clot, platelet-rich plasma, or platelet-rich fibrin

Answer

A blood clot or platelet concentrates serve as a scaffold for stem cell migration and tissue regeneration in revascularization procedures.

(AGD) Academy of General Dentistry Certification Practice Test

(AGD) Academy of General Dentistry Certification Practice Test

AGD Endodontic Diagnosis and Treatment 4