Background
Methods
Subjects
Caries registration
Bacterial plaque samples
Checkerboard DNA-DNA hybridisation
Bacterial nomenclature | Strain description & source |
---|---|
Mutans streptococci | |
Streptococcus mutans
| ATCC-25175 |
Streptococcus sobrinus
| CCUG-27507 |
Non-mutans streptococci | |
Streptococcus mitis
| ATCC-49456D-5 |
Streptococcus gordonii
| ATCC-35105D-5 |
Streptococcus sanguinis
| ATCC-10556D-5 |
Streptococcus salivarius
| ATCC-9759D-5 |
Lactobacilli | |
Lactobacillus casei
| ATCC-334D-5 |
Lactobacillus salivarius
| CCUG-55845 |
Lactobacillus fermentum
| OMGS-3182 |
Actinomyces | |
Actinomyces odontolyticus
| NCTC-9935 |
Actinomyces oris
| ATCC-12104D-5 |
Veillonella parvula
| ATCC-10790D-5 |
Rothia dentocariosa
| CCUG-17835 |
Bifidobacterium dentium
| OMGS-1956 |
Parvimonas micra
| ATCC-33270 |
Data analysis
Results and discussion
Bacterial Strains | Checkerboard scores | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mothers | C4-6
| C2–16
| |||||||||||||
n = 86 | n = 86 | n = 86 | |||||||||||||
≤1 | 2 | 3 | 4 | 5 | ≤1 | 2 | 3 | 4 | 5 | ≤1 | 2 | 3 | 4 | 5 | |
S. mutans
| 77 | 8 | 1 | 0 | 0 | 68 | 15 | 3 | 0 | 0 | 10 | 76 | 0 | 0 | 0 |
S. sobrinus
| 6 | 80 | 0 | 0 | 0 | 79 | 3 | 4 | 0 | 0 | 9 | 77 | 0 | 0 | 0 |
S. sanguinis
| 17 | 69 | 0 | 0 | 0 | 19 | 66 | 1 | 0 | 0 | 68 | 17 | 1 | 0 | 0 |
S. salivarius
| 84 | 2 | 0 | 0 | 0 | 80 | 6 | 0 | 0 | 0 | 83 | 3 | 0 | 0 | 0 |
S. gordonii
| 67 | 16 | 3 | 0 | 0 | 67 | 16 | 3 | 0 | 0 | 66 | 16 | 3 | 1 | 0 |
S. mitis
| 72 | 12 | 2 | 0 | 0 | 72 | 10 | 4 | 0 | 0 | 74 | 12 | 0 | 0 | 0 |
L. casei
| 81 | 5 | 0 | 0 | 0 | 82 | 4 | 0 | 0 | 0 | 81 | 5 | 0 | 0 | 0 |
L. fermentum
| 84 | 2 | 0 | 0 | 0 | 82 | 4 | 0 | 0 | 0 | 84 | 2 | 0 | 0 | 0 |
L. salivarius
| 84 | 2 | 0 | 0 | 0 | 84 | 2 | 0 | 0 | 0 | 83 | 3 | 0 | 0 | 0 |
A. odontolyticus
| 83 | 3 | 0 | 0 | 0 | 80 | 6 | 0 | 0 | 0 | 81 | 5 | 0 | 0 | 0 |
A. oris
| 55 | 27 | 4 | 0 | 0 | 40 | 40 | 6 | 0 | 0 | 55 | 30 | 1 | 0 | 0 |
V. parvula
| 56 | 28 | 1 | 1 | 0 | 50 | 29 | 7 | 0 | 0 | 54 | 29 | 3 | 0 | 0 |
R.dentocariosa
| 74 | 12 | 0 | 0 | 0 | 72 | 14 | 0 | 0 | 0 | 71 | 14 | 1 | 0 | 0 |
B. dentium
| 81 | 5 | 0 | 0 | 0 | 81 | 5 | 0 | 0 | 0 | 83 | 3 | 0 | 0 | 0 |
P. micra
| 20 | 28 | 24 | 14 | 0 | 24 | 26 | 28 | 8 | 0 | 29 | 19 | 29 | 8 | 1 |
Variable | Mothers | C4-6
| C12-16
|
---|---|---|---|
n = 86 | n = 86 | n = 86 | |
DMFT/deft (mean ± SD) | 12.4 ± 5.3 | 9.0 ± 5.0 | 5.8 ± 4.1 |
D/d (mean ± SD) | 5.5 ± 3.9 | 8.0 ± 5.1 | 4.5 ± 3.7 |
DMFT/deft = 0 (n[%]) | 3[3.5] | 8 [9.3] | 10 [11.6] |
D/d = 0 (n[%]) | 10 [11.6] | 9 [10.5] | 12 [14.0] |
Low | 17 [19.8] | 23 [26.7] | 23 [26.7] |
Medium | 31 [36.0] | 25 [29.1] | 32 [37.2] |
High | 38 [44.2] | 38 [44.2] | 31 [36.0] |
S. mutans count
| D/d | ||||||||
---|---|---|---|---|---|---|---|---|---|
Mothers | C4-6
| C12-16
| |||||||
Low | Medium | High | Low | Medium | High | Low | Medium | High | |
(≤1) | (2–5) | (>5) | (≤3) | (4–9) | (>9) | (≤1) | (2–5) | (>5) | |
1 | 17 | 29 | 31 | 20 | 18 | 30 | 23 | 30 | 27 |
2 | 0 | 2 | 6 | 3 | 4 | 8 | 0 | 2 | 4 |
3 | 0 | 0 | 1 | 0 | 3 | 0 | - | - | - |