Restorative & Materials · single question
What is the advantage of using a sectional matrix system?
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Correct answer: B. Better buccolingual contact (interproximal contact)
SECTIONAL MATRIX SYSTEMS (e.g., Palodent, Composi-Tight) are specifically designed to create PROPER INTERPROXIMAL (CONTACT) RESTORATION — the matrix wraps around the individual proximal surface. The BUCOLINGUAL contact and tight proximal contact creation are the PRIMARY ADVANTAGES of sectional matrices over circumferential (Tofflemire) matrices. Sectional matrices create anatomical proximal contacts because the matrix can be tightened specifically in the contact area. B is correct.
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