Periodontitis: Consensus report of workgroup 2 of the 2017 World Workshop on the Classification of Periodontal and Peri‐Implant Diseases and Conditions

Abstract

A new periodontitis classification scheme has been adopted, in which forms of the disease previously recognized as "chronic" or "aggressive" are now grouped under a single category ("periodontitis") and are further characterized based on a multi-dimensional staging and grading system. Staging is largely dependent upon the severity of disease at presentation as well as on the complexity of disease management, while grading provides supplemental information about biological features of the disease including a history-based analysis of the rate of periodontitis progression; assessment of the risk for further progression; analysis of possible poor outcomes of treatment; and assessment of the risk that the disease or its treatment may negatively affect the general health of the patient. Necrotizing periodontal diseases, whose characteristic clinical phenotype includes typical features (papilla necrosis, bleeding, and pain) and are associated with host immune response impairments, remain a distinct periodontitis category. Endodontic-periodontal lesions, defined by a pathological communication between the pulpal and periodontal tissues at a given tooth, occur in either an acute or a chronic form, and are classified according to signs and symptoms that have direct impact on their prognosis and treatment. Periodontal abscesses are defined as acute lesions characterized by localized accumulation of pus within the gingival wall of the periodontal pocket/sulcus, rapid tissue destruction and are associated with risk for systemic dissemination.

Netrin‐1 and its receptor Unc5b as markers of periodontal disease

“…The patients were diagnosed according to the new classification scheme . Stage and extent of periodontitis were also determined …”

A new classification scheme for periodontal and peri‐implant diseases and conditions – Introduction and key changes from the 1999 classification

“…Since the 1999 workshop, substantial new information has emerged from population studies, basic science investigations, and the evidence from prospective studies evaluating environmental and systemic risk factors. The analysis of this evidence has prompted the 2017 workshop to develop a new classification framework for periodontitis …”

Periodontal manifestations of systemic diseases and developmental and acquired conditions: Consensus report of workgroup 3 of the 2017 World Workshop on the Classification of Periodontal and Peri‐Implant Diseases and Conditions

“…"> Rare conditions that may have major effects on the course of periodontitis . Periodontitis (see Workgroup 2 case definition, Papapanou et al …”

“…"> Common conditions with variable effects on the course of periodontitis . Periodontitis associated with diabetes mellitus : Periodontitis (see Workgroup 2 case definition, Papapanou et al., Tonetti et al and diagnosis of diabetes mellitus. Periodontitis associated with smoking : Periodontitis (see Workgroup 2 case definition, Papapanou et al., Tonetti et al and previous or current smoking in pack‐years. …”