Dose‐dependent effect of smoking and smoking cessation on periodontitis‐related tooth loss during 10 ‐ 47 years periodontal maintenance—A retrospective study in compliant cohort

Abstract

It took almost 15 years of smoking cessation for the risk of TLP among former smokers to reach the level of never smokers. Hence, the 2018 periodontitis grading system should consider the impact of the "washout" period on former smokers.