What percentage of bone loss is associated with Stage II periodontitis?

In Stage II periodontitis, the percentage of bone loss typically ranges from 20% to 33%. This stage represents a moderate level of periodontitis where there are notable changes in the supporting structures of the teeth. The classification of periodontitis stages is based on clinical and radiographic evidence of attachment loss and bone loss. In Stage II, while there is still some support for teeth, the significant percentage of bone loss indicates a more serious condition than earlier stages, thus warranting appropriate intervention. Understanding this classification helps in determining treatment plans and managing disease progression effectively.