When does every dental hygiene license in the Commonwealth expire?

In the Commonwealth of Kentucky, dental hygiene licenses expire every December 31 in years ending in even numbers. This means that if a dental hygienist holds a license, they need to ensure that they renew it before this specific date every two years based on the odd/even year cycle. Understanding the renewal cycle is crucial for dental hygienists to maintain their licensure and continue practicing legally.

In the context of this question, the other options present different expiration timelines that do not align with Kentucky's licensing rules. For instance, having a December 31 expiration for odd-numbered years or a January 1 expiration would not conform to the established guidelines, as they would not support the biennial renewal process outlined by the state's licensing authority.