Endodontics Flashcards
6 cards from real INBDE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Endodontics flashcards as text
Which test is most reliable for diagnosing pulp necrosis?
Answer: Electric pulp test
The electric pulp test (EPT) is used to assess pulp vitality and is most reliable for identifying pulp necrosis; a necrotic pulp will show no response.
The apical constriction (minor diameter) of the canal is located approximately:
Answer: 0.5–1.0 mm coronal to the anatomic apex
The apical constriction, where the canal is narrowest, is located approximately 0.5–1.0 mm coronal to the anatomic apex and is the ideal endpoint for canal instrumentation.
Sodium hypochlorite (NaOCl) is used as an irrigant in root canal therapy primarily because it:
Answer: Dissolves organic tissue and has broad antimicrobial activity
Sodium hypochlorite is the primary root canal irrigant due to its ability to dissolve pulp tissue and its potent antimicrobial activity against endodontic pathogens.
Vertical root fracture is most commonly associated with:
Answer: Excessive lateral condensation during obturation
Excessive lateral condensation pressure during cold lateral compaction of gutta-percha is a major cause of vertical root fracture.
Gutta-percha is primarily composed of which material?
Answer: Trans-polyisoprene (rubber), zinc oxide, and barium sulfate
Gutta-percha points consist primarily of trans-polyisoprene (gutta-percha resin), zinc oxide (filler), barium sulfate (radiopacifier), and waxes/resins.
Which radiographic finding is most consistent with a diagnosis of condensing osteitis?
Answer: Periapical radiopacity with diffuse borders
Condensing osteitis appears as a periapical radiopacity representing localized bone sclerosis in response to a low-grade inflammatory stimulus from the pulp.