Endodontics · single question
What is the most important objective when creating a cameral (coronal) access cavity?
Show answer and explanation
Correct answer: A. Straight-line access to root canals
A) Straight-line access — CORRECT.
The primary goal of access cavity preparation is achieving STRAIGHT-LINE ACCESS to the root canal orifices and the apical foramen. All other objectives (pulp roof removal, dentin conservation) are secondary to this fundamental requirement. Without straight-line access, adequate cleaning, shaping, and obturation of the root canal system cannot be achieved.
B) Complete pulp roof removal: Necessary but a means to achieve straight-line access, not the ultimate goal.
C) Tooth structure preservation: Important (modern "ninja" access concepts) but should not compromise straight-line access.
D) Aesthetic form: Not a consideration in access cavity design.
The primary goal of access cavity preparation is achieving STRAIGHT-LINE ACCESS to the root canal orifices and the apical foramen. All other objectives (pulp roof removal, dentin conservation) are secondary to this fundamental requirement. Without straight-line access, adequate cleaning, shaping, and obturation of the root canal system cannot be achieved.
B) Complete pulp roof removal: Necessary but a means to achieve straight-line access, not the ultimate goal.
C) Tooth structure preservation: Important (modern "ninja" access concepts) but should not compromise straight-line access.
D) Aesthetic form: Not a consideration in access cavity design.