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Table 1 Main data of the included studies

From: Role of proinflammatory mutations in peri-implantitis: systematic review and meta-analysis

Authors, year Patients Diagnostic criteria for diagnosis of peri-implantitis
Ethnicity Case Control
Shimpuku et al. 2003 Japan 17 22 ABL > 0.5 mm
Laine et al. 2006 Belgium 71 44 ABL (3 threads), BOP, pus
Cury et al. 2007 Brazil 17 19 ABL (3 threads), BOP, pus
Lachmann et al. 2007 Germany 11 18 PPD > 4 mm
Lin et al. 2007 Japan 29 30 ABL > 0,5 mm
Hamdy et al. 2007 Egipt 25 25 PPD > 4 mm, ABL, BOP
Gurol et al. 2011 Turkey 32 46 ABL > 3 mm, PPD > 5 mm, BOP, pus
Melo et al. 2012 Italy 16 31 PPD > 4 mm, BOP, pus
Ladeira-Casado et al. 2013 Brazil 31 40 ABL > 3 mm, pus
García-Delaney et al. 2015 Spain 27 27 ABL > 2 mm, PD > 4 mm, BOP, pus
Rakic et al. 2015 Germany 189 180 ABL (> 2 threads), PPD > 5 mm, BOP
Petkovic-Curcin et al. 2017 Serbia 34 34 ABL (> 2 threads), PPD > 4 mm, BOP
  1. Case: patients with peri-implantitis. Control: patients without peri-implantitis. ABL: alveolar bone loss; BOP: bleeding on probing; PPD: peri-implant pocket depth