AGD Endodontic Diagnosis and Treatment 5

Question 1

Which classification system is used to describe the complexity of root canal anatomy based on canal configuration?

Accepted Answer

Vertucci's classification

Answer

Vertucci's classification describes eight canal configuration types based on how canals originate, divide, and terminate within the root.

Question 2

A patient with an acute alveolar abscess presents with facial cellulitis and difficulty swallowing. What is the MOST urgent concern?

Accepted Answer

Airway compromise from spreading infection such as Ludwig's angina

Answer

Spreading odontogenic infection to the floor of the mouth (Ludwig's angina) can rapidly compromise the airway and is a life-threatening emergency.

Question 3

External cervical resorption (ECR) differs from internal root resorption (IRR) radiographically because ECR:

Accepted Answer

Appears eccentric to the canal and the canal outline remains intact through the lesion

Answer

In ECR, the root canal remains intact and the resorptive defect is external; on CBCT, the canal outline can be traced through the lesion, unlike IRR.

Question 4

The 'Schilder technique' in root canal obturation is characterized by:

Accepted Answer

Warm vertical compaction using heated pluggers

Answer

The Schilder technique uses sequentially heated pluggers and vertical compaction to densely obturate the canal system with warm gutta-percha.

Question 5

Calcium hydroxide is used as an intracanal medicament between appointments primarily because it:

Accepted Answer

Creates a highly alkaline pH that kills anaerobic bacteria

Answer

Calcium hydroxide dissociates to produce hydroxyl ions, raising pH to approximately 12.5, which disrupts bacterial cell membranes and enzyme function.

(AGD) Academy of General Dentistry Certification Practice Test

(AGD) Academy of General Dentistry Certification Practice Test

AGD Endodontic Diagnosis and Treatment 5