selfcuring

Self-curing refers to a process by which a material hardens, sets, or crosslinks without the need for external curing energy such as heat, light, or externally applied moisture. Instead, curing occurs through reactions or processes contained within the material’s own formulation, such as chemical initiators, internal moisture reserves, or slow-release water.

In dentistry, self-curing resins and cements rely on chemical initiation of polymerization, typically involving a peroxide initiator and an amine co-initiator. They set at ambient temperature without light exposure, making them suitable for deep cavities or situations where light-curing is impractical. Common uses include temporary crowns, denture bases, and luting cements. Advantages include simplicity and portability, while disadvantages can include slower cure, higher polymerization shrinkage, exothermic risk, odor, and potential for color changes over time.

In concrete technology, self-curing or internally cured concrete uses moisture stored within the material to sustain cement hydration after placement. This can be achieved with hygroscopic agents or porous aggregates that release water over time, or with moisture-retaining additives. Benefits include reduced autogenous shrinkage and improved long-term strength and durability, whereas limitations involve dependence on proper material design, potential need for specialized aggregates, and added cost.

In polymers and adhesives, self-curing formulations set via chemical crosslinking that does not require heat or external energy. Examples include certain one- and two-part epoxies and latent-initiator systems that cure at room temperature after mixing. The term is used variably across industries, and some contexts distinguish self-curing from moisture- or humidity-cured systems.