What is a primary characteristic of conventional glass ionomer cement?

A primary characteristic of conventional glass ionomer cement is its self-curing property. This material undergoes a chemical reaction when mixed that allows it to set without the need for an external light source, making it convenient and straightforward to use. The self-curing property is particularly beneficial in dental settings as it allows for the material to harden at room temperature, simplifying the application process for dental practitioners.

In contrast, while fast setting time, excellent aesthetic qualities, and high strength are important factors in dental materials, they are not hallmark traits of conventional glass ionomer cement. Instead, glass ionomer is known for its ability to release fluoride and adhere to tooth structure, contributing to its popularity in specific restorative applications despite not being the best in every area.