Composite Finishing — NDEB AFK MCQ
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Correct answer: C — Tungsten carbide (12-fluted) finishing bur
Tungsten carbide finishing burs (typically 12- to 30-fluted) are specifically designed for contouring and finishing composite restorations. The multiple flutes produce a smooth surface with minimal composite removal per revolution. They are used after gross shaping with coarser instruments. Aluminium oxide discs (Sof-Lex), fine diamond burs, and rubber polishing points are used sequentially for final polishing. Coarse diamond burs are for tooth preparation and gross shaping.
Reference: Heymann – Sturdevant's Art and Science of Operative Dentistry, 7th ed., 2019