ABE Endodontic Surgery Flashcards

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

Answer: 2% Lidocaine with 1:50,000 epinephrine

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

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

Answer: Creates a preparation coaxial with the long axis of the canal

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

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

Answer: Oxidized cellulose (Surgicel)

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

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

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

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

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

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

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

Which radiographic appearance confirms complete healing after endodontic surgery?

Answer: Complete radiographic resolution of the periradicular radiolucency

Complete radiographic resolution of the periradicular radiolucency indicates successful bone regeneration and healing of the surgical site.