NRE Dental Step I MCQs

Creep is time-dependent deformation of a material under a constant load.

Galvanic corrosion is electrochemical reaction between dissimilar metals in an electrolyte such as saliva.

Zinc phosphate cement is a traditional luting cement that does not chemically bond to tooth structure.

Resin-modified glass ionomer is a hybrid material combining an acid-base reaction with resin polymerisation.

Thermal expansion coefficient is a measure of dimensional change in a material with temperature.

Amalgam is a metallic restorative material formed by combining mercury with an alloy powder.

Composite resin is a tooth-coloured resin matrix reinforced with inorganic filler particles.

Glass ionomer cement is a material formed by an acid-base reaction that can chemically bond to tooth and release fluoride.