ABE ABE Endodontic Surgery 2

Question 1

Which local anesthetic concentration is most commonly used to achieve hemostasis during endodontic surgery?

Accepted Answer

2% Lidocaine with 1:50,000 epinephrine

Answer

2% lidocaine with 1:50,000 epinephrine provides superior local hemostasis due to the highest epinephrine concentration available in dental cartridges.

Question 2

What is the primary advantage of using piezoelectric ultrasonic tips for root-end preparation in endodontic surgery?

Accepted Answer

Creates a preparation coaxial with the long axis of the canal

Answer

Ultrasonic tips create a preparation coaxial with the long axis of the canal, ensuring complete removal of canal contents regardless of root curvature.

Question 3

Which hemostatic agent is commonly placed in the bony crypt to control bleeding before root-end filling placement?

Accepted Answer

Oxidized cellulose (Surgicel)

Answer

Oxidized cellulose (Surgicel) is placed in the bony crypt to achieve hemostasis by activating the clotting cascade upon contact with blood.

Question 4

Which suture type is most appropriate for closure of endodontic surgical flaps?

Accepted Answer

4-0 or 5-0 resorbable sutures (e.g., polyglycolic acid)

Answer

4-0 or 5-0 resorbable sutures minimize tissue trauma, provide good approximation, and eliminate the need for a suture removal appointment.

Question 5

What is the primary purpose of guided bone regeneration (GBR) membranes used in endodontic surgery?

Accepted Answer

They prevent epithelial downgrowth and promote bone regeneration in large periradicular defects

Answer

GBR membranes exclude fast-migrating epithelial and connective tissue cells, allowing osteogenic cells to populate and regenerate large periradicular bony defects.

(ABE) American Board of Endodontics Practice Test

(ABE) American Board of Endodontics Practice Test

ABE ABE Endodontic Surgery 2