When an artificial nail covering has achieved less than 90 percent polymerisation and has not reached its intended strength and contains potentially harmful levels of unreacted monomers or oligomers.
Undercured
![](https://nailknowledge.org/wp-content/uploads/2023/03/image002.jpg)
When an artificial nail covering has achieved less than 90 percent polymerisation and has not reached its intended strength and contains potentially harmful levels of unreacted monomers or oligomers.