Objective To examine the status and related factors of periodontal health among adult community residents in Shenzhen city and to provide references for conducting oral health promotion and intervention.Methods We conducted a questionnaire survey and periodontal health examination among 3 030 residents aged 18 – 90 years recruited with multistage stratified random sampling from communities of 10 districts across Shenzhen city during March 2015.Community periodontal index was adopted in the study.Results The...