Restorative & Materials · single question
What is an advantage of using a sectional matrix (compared to a circumferential matrix band)?
Show answer and explanation
Correct answer: B. Better buccolingual contour
A sectional matrix system, combined with a separator ring, is specifically designed to better re-create the natural proximal contour and a tight, anatomically correct contact in the buccolingual dimension — something circumferential matrices tend to do poorly, often producing flat or open contacts.
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