Which statement about chemically activated (self-cure) resins is NOT true?

Chemically activated (self-cure) resins are dental materials that harden through a chemical reaction initiated by mixing two components, typically a resin and a catalyst. When examining the properties of these materials, certain characteristics are consistently observed.

One key feature of chemically activated resins is their long-term storage stability. As indicated in the correct response, these materials can be stored effectively for extended periods when kept under appropriate conditions, which preserves their effectiveness when needed.

Another significant characteristic is their tendency to discolor over time, which aligns with observed properties in dental materials. Many self-cure resins can develop yellowing as they age, impacting their aesthetic properties.

Moreover, while the efficiency of the cure can depend on the mixing process, properly mixed self-cure resins typically achieve a sufficient degree of polymerization that makes them effective for clinical use.

The statement regarding marginal stress buildup being much higher for chemically activated resins compared to photocured resins highlights an important difference. Photocured resins, which harden upon exposure to light, often create less internal stress and a more favorable distribution of forces within the material compared to their chemically activated counterparts. Therefore, the assertion about self-cure resins experiencing higher marginal stress buildup is incorrect, as it