TABLE 4.
Group (infecting strain) | Scorea for: |
Totala (log CFU) |
|||||
---|---|---|---|---|---|---|---|
Plaque extentb | Initial dentinal fissuresc | Advanced dentinal fissuresc | Smooth-surface cariesd | Bacteria | Streptococci | S. mutans bacteria | |
1 (none [water control]) | 2.8 ± 0.63*** | 9.5 ± 1.72*** | 6.6 ± 2.80*** | 0.5 ± 0.97*** | 7.6 ± 0.23 | 7.3 ± 0.33 | ND***e |
2 (wild type) | 1.5 ± 0.53 | 12.0 ± 0.00 | 11.2 ± 1.14 | 6.8 ± 4.34 | 7.5 ± 0.38 | 7.4 ± 0.36 | 7.2 ± 0.46 |
3 (EA72) | 2.6 ± 0.52*** | 10.9 ± 0.99* | 9.5 ± 0.71* | 1.4 ± 2.07** | 7.7 ± 0.26 | 7.6 ± 0.26 | 5.6 ± 2.97 |
4 (EA74) | 2.6 ± 0.84*** | 11.5 ± 0.71 | 9.6 ± 1.17* | 4.4 ± 3.89 | 7.3 ± 0.27* | 7.2 ± 0.34 | 6.4 ± 0.75 |
5 (EA75) | 2.7 ± 0.48*** | 10.9 ± 1.10* | 9.0 ± 1.33** | 1.6 ± 1.51** | 7.7 ± 0.18 | 7.5 ± 0.20 | 5.4 ± 2.92 |
***, P < 0.001; **, P < 0.01; *, P < 0.05. All groups were compared with group 2 (wild type).
Four units at risk.
Twelve fissures at risk.
Twenty units at risk.
ND, not detectable.