Which of the following is true regarding resin cements?

Resin cements are widely utilized in dental applications due to their favorable mechanical properties, enhancing both adhesion and restoration longevity. The compressive strength of resin cements, ranging between 180 and 300 MPa, illustrates their robustness when subjected to chewing forces and stresses in the oral cavity. This strength is crucial for the longevity of dental restorations, as they must withstand significant daily stresses during normal function.

In comparison to the other options, film thickness is generally outside of the indicated range and is typically less than 50 μm for ideal situations, while flexural strength values are often higher than 40 MPa for high-performance resin cements. Similarly, the immediate shear bond strength tends to be above 8 MPa for many resin cements, indicating a strong bond formation between the cement and the substrate. This underscores the importance of understanding the mechanical properties of resin cements to ensure optimal performance in restorative procedures.