Species | Healthy implants (n = 30) | Peri-implantitis (n = 30) | Fisher’s exact test |
No. of positive samples (%; frequency) | |||
P. gingivalis | 6 (20) | 24 (80) | p < 0.01 |
T. forsythia | 8 (27) | 23 (77) | p < 0.01 |
T. denticola | 5 (17) | 18 (60) | p < 0.01 |