system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Cutting efficiency is best with which of the following materials?
assistant
The correct answer is  Hand instrument are made of stainless steel, carbon steel, or blades of tungsten carbide soldered to a steel handle. Carbon steel is able to keep a cutting edge better than stainless steel.
Carbide blades, however, are the most efficient in cutting, even though they are somewhat brittle.
Ref: Operative dentistry modern theory and practice Marzouk page 59