What defines a Kennedy Class IV RPD?

A Kennedy Class IV removable partial denture (RPD) is characterized by having an edentulous area located anterior to the remaining dentition, specifically involving the anterior teeth. This classification indicates that there is a situation where the edentulous spaces are located in the front of the mouth, which can significantly influence the design and support of the partial denture.

RPDs classified as Kennedy Class IV require careful consideration of esthetics, support, and retention since they involve replacing anterior teeth, which are crucial for both functional and cosmetic reasons. The design usually profits from the posterior remaining teeth for support, but the focus remains on the anterior aspect of the mouth, making it unique when compared to other Kennedy classifications, such as Class I or Class II, where the edentulous areas are positioned posteriorly.

The other classifications describe different configurations of the dentition and edentulous spaces but do not fit the specific criterion of anterior edentulous areas that define Class IV RPDs.