Which bone cutting instrument has a cutting edge and is bevelled on both sides?

• A. Chisel
• B. Gigli saw
• C. Osteotome
• D. Rongeur

Answer: (C)

A bone-cutting tool with a cutting edge sharpened on both sides is designed for cleanly slicing through bone when struck with a mallet. That double-beveled blade is a hallmark of an osteotome. It behaves like a chisel but has edges ground on both faces, allowing smoother, straighter cuts and better control during osteotomies or bone reshaping.

In contrast, a chisel typically has a single bevel on one side (and a flat back), so it’s not described as double-beveled. A gigli saw is a flexible wire with teeth used to saw through bone, not a blade with bevels. A rongeur uses sharp jaws to bite through bone, more like forceps, and isn’t a single double-beveled cutting edge.

So the instrument with a cutting edge bevelled on both sides is the osteotome.