Table 3.
Number and percentage of positive subjects for each microorganism in the four studied groups
| Bacteria | Healthy (n = 11) | Gingivitis (n = 10) | CP (n = 30) | AgP (n = 26) | Total (n = 77) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| N a | %b | N a | %b | N a | %b | N a | %b | N a | %b | |
| P. gingivalis | 2 | 18.2 | 7 | 70 | 28 | 93.3* | 23 | 88.5* | 60 | 77.9 |
| T. denticola | 3 | 27.3 | 9 | 90 | 27 | 90* | 24 | 92.3* | 63 | 81.8 |
| T. forsythia | 6 | 54.5 | 10 | 100 | 29 | 96.7* | 24 | 92.3 | 69 | 89.6 |
| A. actinomycetemcomitans | 2 | 18.2 | 1 | 10 | 10 | 33.3 | 6 | 23.1 | 19 | 24.7 |
| P. intermedia | 0 | 0 | 2 | 20 | 16 | 53.3 | 7 | 26.9 | 25 | 32.5 |
| F. nucleatum | 5 | 45.4 | 9 | 90 | 24 | 80 | 24 | 92.3* | 62 | 80.5 |
| P. micra | 7 | 63.6 | 8 | 80 | 27 | 90 | 23 | 88.5 | 65 | 84.4 |
| D. pneumosintes | 1 | 9.1 | 3 | 30 | 20 | 66.7* | 22 | 84.6* | 46 | 59.7 |
| E. corrodens | 5 | 45.4 | 10 | 100 | 27 | 90* | 21 | 80.8 | 63 | 81.8 |
| Mean bacteria in each group of patients (±SD) | 2.8 ± 1.6 | 5.9 ± 1.3 | 6.9 ± 1.8 | 6.7 ± 1.7 | ||||||
a N number of positive subjects for each bacterium
b % percentage of positive subjects for each bacterium
*P values <0.05 obtained from statistical comparison between the prevalence data of healthy and diseased subjects