[Predictive value of tooth loss risk with 2018 new classification of periodontitis:a literature review].

The occurrence, progression and treatment efficacy of periodontitis are affected by many factors. Development on accurate estimation of prognosis is essential for treatment plan determination. The application of the 2018 new classification of periodontitis is one of the most important advances in the prognosis and risk assessment of periodontitis. The predictive value of the new classification on tooth loss risk had been evaluated by several latest researches, however, consensus still lacks. This review focused on the predictive efficacy of the 2018 new classification of periodontitis on tooth loss risk in periodontitis patients, in order to provide scientific evidence for clinical application and further improvement of the new classification system.