Endodontics and Pulpal Therapy Flashcards

Which sealer is considered the gold standard for biocompatibility and is resin-based?

Answer: AH Plus epoxy resin sealer

AH Plus is widely regarded as the reference standard sealer due to its excellent sealing ability, low solubility, and biocompatibility.

A maxillary first molar most commonly has how many root canals?

Answer: 4

Maxillary first molars typically have 4 canals: mesiobuccal 1, mesiobuccal 2 (MB2), distobuccal, and palatal.

During pulpotomy in a primary molar, which material has replaced formocresol as the preferred medicament?

Answer: MTA (Mineral Trioxide Aggregate)

MTA is now preferred over formocresol for primary molar pulpotomy due to superior success rates and biocompatibility.

What radiographic finding is pathognomonic of external cervical resorption?

Answer: Irregular radiolucency near the CEJ that does not follow the pulp outline

External cervical resorption presents as an irregular radiolucency at the cervical region that is superimposed on but separate from the pulp space.

A patient has a sinus tract. You place a gutta-percha cone through it and take a radiograph. The cone points to tooth #30. This is an example of which diagnostic technique?

Answer: Tracing a sinus tract

Inserting a gutta-percha point into a sinus tract and radiographing it traces the tract back to the source tooth.

Sodium hypochlorite accident (extrusion beyond the apex) is managed initially by:

Answer: Administering corticosteroids and analgesics and monitoring closely

NaOCl accidents cause tissue necrosis and pain managed with anti-inflammatory medications, analgesics, and close monitoring.

Which instrument is used to measure the working length radiographically?

Answer: K-file placed at estimated working length

A K-file is placed to the estimated working length and a periapical radiograph confirms the file's relationship to the apex.