CB Temp Shade A2, 4:1 Ratio Mixing Tips (10) CB Temp is a temporary crown and bridge material based on multifunctional methacrylic esters. Dispensed in an auto-mix mini syringe, CB Temp is easy to handle and there is no guesswork in measuring. The material is designed for creating comfortable, attractive, and strong temporary crowns and bridges. CB Temp is methylmethacrylate-free, and its temperature while curing is never above 40°C/104°F. It also has good polishability and color stability, and is fluorescent in UV light.