Theory III

presence of bacteria in the blood

lipopolysaccharide (LPS) complex found in the cell wall of many gram-negative microorganisms; contained superficially within periodontally involved cementum

anatomic area between the roots of a multirooted tooth

pathologic resorption of the bone within a furcation

area on tooth where instrumentation is confined; area where calculus and altered cementum are located and treatment is required

dental biofilm removal and control, supragingival and subgingival scaling, root planing, and adjuctive treatments such as the use of chemotherapy; the basic objectives are to restore periodontal health; arrest or slow the progression of early periodontal disease; or, for more advanced disease, to prepare the tissue for more complex periodontal therapy

a definitive treatment procedure designed to remove altered cementum or surface dentin that is rough, impregnated with calculus, or contaminated with toxins or microorganisms. Also termed debridement or root preparation

instrumentation of the crown or root surfaces to remove dental biofilm and calculus