321Dental MaterialsMedium
Which of the following is NOT true of polymethyl methacrylate?
ADensity of 1.13 g/cm3
BKnoop hardness number 18 to 20
CModulus of elasticity of 3.4 GPa
DTensile strength of 60 MPa
Correct answer
C. Modulus of elasticity of 3.4 GPa
Explanation
The correct answer is Modulus of elasticity of 3.4 GPa.