Which Kennedy classification indicates a single unilateral edentulous area located in the posterior quadrant?

The correct classification for a single unilateral edentulous area located in the posterior quadrant is Class III. This classification is defined by the presence of one or more missing teeth on one side of the dental arch, while the opposite side maintains a complete dentition. In Class III, the edentulous area is not adjacent to the anterior teeth and is found in the posterior region.

In contrast, Class I indicates a bilateral edentulous area located in the posterior segments, meaning both sides are missing teeth. Class II refers to a similar condition, but with the edentulous area located unilaterally in the posterior, specifically showing that there is a distal edentulous space. Class IV denotes a single edentulous space located anteriorly, which does not apply to the description given. This clear distinction in locations and the nature of the edentulous areas is crucial for determining the accurate Kennedy classification.