“…The articles were published between 2007 and 2017, and most were conducted in Asian countries. PD was diagnosed by a complete periodontal examination in seventeen studies, 12,23,28,31,32,33,35,36,37,38,39,40,41,42,43,44,45 a nd by a pa r t ia l per iodont a l exa m i n at ion in sixteen studies. 13,14,15,16,22,29,30,34,46,47,48,49,50,51,52,53 Concerning the definition criteria for PD, eleven studies 12,14,15,22,29,30,34,49,50,51,52 used the Community Periodontal Index (CPI), 54 and seven studies 23,37,40,42,43,…”