Which term describes the change of resin material from pliable to hardened state?

Which term describes the change of resin material from pliable to hardened state?

• A. Polymerization
• B. Flow
• C. Solubility
• D. Hardness

Answer: (A)

Polymerization is the chemical reaction that changes a resin from pliable to hardened. During polymerization, small molecules called monomers join together to form long chains or a network, turning the soft resin into a rigid solid. In many dental resins, this reaction is triggered by light or by mixing with a chemical initiator, causing the material to set. Flow describes how a liquid can move or spread, which isn’t the process that makes the resin hard. Solubility refers to how substances dissolve in a solvent, not how a resin cures. Hardness is a property measured after curing, not the process that causes the change.

Polymerization is the chemical reaction that changes a resin from pliable to hardened. During polymerization, small molecules called monomers join together to form long chains or a network, turning the soft resin into a rigid solid. In many dental resins, this reaction is triggered by light or by mixing with a chemical initiator, causing the material to set.

Flow describes how a liquid can move or spread, which isn’t the process that makes the resin hard. Solubility refers to how substances dissolve in a solvent, not how a resin cures. Hardness is a property measured after curing, not the process that causes the change.