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No. | Authors | Year | Definition of gingival/periodontal disease | Sample size | Association with oral H. pylori | Association with gastric H. pylori |
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1 | Silva et al. [58] | 2010 | At least 4 teeth with PD ≥ 5 mm and CAL > 3 mm | 115 dyspeptic patients | Significant | Not evaluated |
2 | Namiot et al. [26] | 2010 | Russell’s periodontal index | 155 dyspeptic patients | Nonsignificant | Not evaluated |
3 | Gonçalves et al. [60] | 2009 | At least 3 sites with PD ≥ 5 mm and/or CAL ≥ 4 mm and BOP | 23 HIV seropositive patients of whom 13 had periodontitis and 10 were periodontally healthy; 31 HIV seronegative patients of 17 had periodontitis and 14 were periodontally healthy | Significant | |
4 | Al Asqah et al. [35] | 2009 | BOP + PD ≥ 3 mm on at least 4 teeth | Dyspeptic patients-62 patients with periodontitis and 39 without periodontitis | Significant | Significant |
5 | Liu et al. [61] | 2009 | Gingival index | 443 dyspeptic patients | Significant | Not evaluated |
6 | Zaric et al. [40] | 2009 | Mean PD, CAL, and gingival index scores | 66 dyspeptic patients with H. pylori infection of gastric mucosa | Significant for mean PD and CAL; not significant for gingival index scores | Not evaluated |
7 | Bürgers et al. [36] | 2008 | Periodontal Screening Index |
94 dyspeptic patients | Nonsignificant | Nonsignificant |
8 | Namiot et al. [77] | 2007 | Russell’s periodontal index | 137 H. pylori positive patients with peptic ulcer | Outcome variable was efficacy of HP eradication | Nonsignificant (outcome variable was efficacy of H. pylori eradication) |
9 | Anand et al. [38] | 2006 | Patients with one or more sites with a PD ≥ 3 mm and CAL ≥ 3 mm at the same site | Sixty-five dyspeptic patients with H. Pylori infection and 69 dyspeptic patients without H. pylori infection | Not evaluated | Nonsignificant |
10 | Gebara et al. [66] | 2004 | Gingivitis group-patients with PD ≤ 3 mm and BOP on at least 4 sites; periodontitis group-BOP + PD ≥ 5 mm on at least 4 teeth | 15 gingivitis and 15 periodontitis patients-All were H. pylori positive in antral mucosa | Nonsignificant | |
11 | Umeda et al. [37] | 2003 | Presence of periodontal pockets ≥ 4 mm | 28 patients who harbored H. pylori in stomach/duodenum | Significant | Not evaluated |
12 | Choudhury et al. [22] | 2003 | CPI | 124 dyspeptic patients | Significant | Not evaluated |
13 | Dye et al. [34] | 2002 | Presence of 1 dental site with PD ≥ 5 mm | Data from 4504 participants of NHANES III Survey | Not evaluated | Significant |
14 | Berroteran et al. [39] | 2002 | Gingival index-scoring 0–3 | 32 dyspeptic patients and 20 asymptomatic controls | Nonsignificant | Nonsignificant |
15 | Dowsett et al. [18] | 1999 | Full mouth periodontal examination | 242 subjects | Nonsignificant | Nonsignificant |
16 | Savoldi et al. [29] | 1998 | Gingival index | 80 dyspeptic patients | Nonsignificant-None of the plaque samples were positive for HP | Nonsignificant |
17 | Hardo et al. [24] | 1995 | CPITN | 62 dyspeptic patients | Nonsignificant | Nonsignificant |
18 | Nguyen et al. [73] | 1993 | Gingival index | 25 dyspeptic patients | Nonsignificant | Nonsignificant |
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