Which term refers to the resorption of bone into the bi or trifurcation area of multi-rooted teeth?

Furcation involvement specifically refers to the loss of attachment and bone resorption that occurs in the area between the roots of multi-rooted teeth, such as molars. This condition is crucial in periodontal disease, where infection and inflammation can lead to the breakdown of the supporting alveolar bone in these bifurcation or trifurcation zones. The presence of furcation involvement indicates a more advanced stage of periodontal disease, as it suggests that the disease process has affected bone support enough to compromise the structural integrity of the tooth.

In contrast, cervical enamel projections pertain to anatomical variations in the enamel at the cervical region of a tooth and do not specifically relate to bone resorption in the furcation area. Bone loss is a more general term that might encompass any reduction in alveolar bone, not specifically in the furcation areas. Periodontal pockets are spaces that can form between teeth and gums due to attachment loss but do not inherently indicate bone resorption in the furcation region. Therefore, the term that accurately describes the resorption of bone in the bifurcation or trifurcation areas is furcation involvement.