Clinical Endodontics Flashcards
7 cards from real ABE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Clinical Endodontics flashcards as text
A patient under bisphosphonate therapy requires endodontic surgery. The primary concern compared to a non-medicated patient is:
Answer: Risk of medication-related osteonecrosis of the jaw (MRONJ)
Bisphosphonates impair osteoclast function and bone remodeling, increasing the risk of MRONJ following invasive dental procedures including endodontic surgery.
In a regenerative endodontic procedure for an immature necrotic tooth, blood clot formation in the canal is induced to:
Answer: Provide a scaffold for stem cells from the apical papilla to promote root development
The blood clot serves as a scaffold that supports migration of stem cells from the apical papilla, enabling continued root development and apexogenesis.
A patient presents with a mandibular molar that is tender to percussion, has a large periapical lesion, and has had previous root canal therapy. The post-treatment disease is most likely due to:
Answer: Extraradicular biofilm or persistent intraradicular infection
Persistent or recurrent post-treatment disease is most commonly attributed to intraradicular infection or, less frequently, extraradicular biofilm persisting despite prior treatment.
The critical pH at which calcium hydroxide exerts its antimicrobial effect in the root canal is approximately:
Answer: 11.5
Calcium hydroxide creates a pH of approximately 12.5 in solution, but its antimicrobial effect is critically achieved around pH 11.5 within the dentinal tubules.
Which of the following describes the Schilder technique for root canal obturation?
Answer: Warm vertical compaction using heat-softened gutta-percha
The Schilder technique uses warm vertical compaction to plasticize gutta-percha and condense it three-dimensionally into the root canal system.
A 9-year-old patient has a traumatically exposed pulp of a maxillary central incisor with an open apex and a recent exposure (under 1 hour). The best treatment is:
Answer: Direct pulp cap with MTA to preserve pulp vitality and allow apexogenesis
In a young patient with a recent pulp exposure and open apex, direct pulp capping with MTA to maintain pulp vitality supports continued apexogenesis.
The 'danger zone' in curved root canals most commonly associated with strip perforation is located on which wall?
Answer: Inner (furcal) wall at the inner curve
Strip perforations occur most often on the inner (furcal) wall at the inner curve of root canals, where dentin is thinnest and instruments straighten against the curve.