PAPER A210+ Practice Questions Mapped
Endodontics & Pulp Therapy — ORE Part 1 Sample Questions
Root canal anatomy, sodium hypochlorite irrigants, 17% EDTA, calcium hydroxide medicaments, and MTA obturation. Practice Single Best Answer (SBA) questions with evidence-based UK clinical rationale, instant scoring, and adaptive weakness tracking on MentoraMed.
HIGH-YIELD SAMPLE SBA ITEMOfficial Format: Single Best Answer
What is the primary function of 17% Ethylenediaminetetraacetic acid (EDTA) solution during root canal chemo-mechanical preparation?
A. Dissolving organic pulpal tissue
B. Chelating inorganic component of the smear layerCORRECT ANSWER ✓
C. Bactericidal action against E. faecalis
D. Staining lateral root canals
lightbulbCLINICAL RATIONALE & GUIDELINE CITATION
EDTA is a chelating agent that removes the inorganic component of the smear layer, whereas NaOCl dissolves organic tissue.
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