Which of the following has the highest modulus of elasticity?: (A) Dentin, (B) Enamel, (C) Amalgam, (D) Composite Resin
Answer is B. Enamel is a brittle substance with a comparatively high modulus of elasticity, a low proportional limit in tension, and a low modulus of resilience.
Reference: PHILLIPS’ SCIENCE OF DENTAL MATERIALS, 12th ed page no 67