Table 3 Detection frequencies of target bacteria in subgingival peri-implant sites for each group
|  | T. forsythia (Tf) | P. gingivalis (Pg) | T. denticola (Td) | TBL | Tf + Pg | Tf + Td | Pg + Td | Red complex |
|---|---|---|---|---|---|---|---|---|
Healthy | 12 (22.2%) | 6 (11.1%) | 9 (16.7%) | 52 (96.3%) | 6 (11.1%) | 6 (11.1%) | 6 (11.1%) | 6 (11.1%) |
Peri-implantitis | 8 (33.3%) | 9 (37.5%) | 8 (33.3%) | 24 (100%) | 6 (25%) | 6 (25%) | 8 (33%) | 6 (25%) |
Differences per group | n.s. | ** | n.s. | n.s. | n.s. | n.s. | * | n.s. |