Dental Materials • NEET MDS
Stress = Force divided by Area = internal resistance.
Strain = change in length divided by original length = deformation.
Elastic modulus = Youngs modulus = stress divided by strain = stiffness.
Toughness = total area under stress-strain curve.
Resilience = energy absorbed in elastic region only.
Hardness tests: Knoop for micro surfaces, Vickers universal, Brinell for macrosurfaces.
Use these mnemonics during your revision. The key associations above are designed to help you recall Mechanical Properties concepts instantly during the exam. Focus on the “equals” associations — these are the most commonly tested patterns in NEET MDS.