Food intake, masticatory function, tooth mobility, loss of posterior support, and diminished quality of life are associated with more advanced periodontitis stage diagnosis.

Subjects with stage IV periodontitis are characterized by a specific set of signs and symptoms of advanced periodontal breakdown and functional impairment, which impact on the quality of life and masticatory function/food intake choices. Stage IV periodontitis captures a clinical entity with distinct features and treatment needs. This study is registered in ClinicalTrials.gov (NCT03928080).