Dental Materials — Key differences for NEET MDS
Feldspathic porcelain = most esthetic weakest most translucent. Leucite-reinforced = IPS Empress pressable. Lithium disilicate = IPS e.max most popular all-ceramic. Zirconia = strongest ceramic = opaque = posterior crowns. CAD-CAM = computer-aided design manufacturing. Porcelain fused to metal = PFM = most common fixed prosthesis historically. Metal-ceramic bond = oxide layer.
📖 Read full notes →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.
📖 Read full notes →NEET MDS frequently tests the ability to differentiate between related topics. Understanding the key differences between Dental Ceramics and Mechanical Properties in Dental Materials is crucial for scoring well. Questions may test diagnostic features, treatment approaches, or characteristic findings.