Table 4.
Association between the number of teeth with dental caries and periodontal disease severity in the 65- to 74-year-old group
| DFT (mean ± SD) |
Degree of periodontitis | Model 1 a | Model 2 b | Model 3 c | ||
|---|---|---|---|---|---|---|
| CAL ≤ 3 mm N = 830 |
CAL = 4–5 mm N = 1428 |
CAL ≥ 6 mm N = 1859 |
P value and OR (95% CI) |
P value and OR (95% CI) |
P value and OR (95% CI) |
|
| Type ABC | 3.34 ± 4.21 | 4.07 ± 4.24 | 4.24 ± 4.35 |
< 0.001 1.03 (1.02,1.04) |
< 0.001 1.04 (1.03,1.05) |
< 0.001 1.04 (1.03,1.05) |
| Type A | 1.39 ± 2.12 | 1.50 ± 2.10 | 1.10 ± 1.70 |
< 0.001 0.93 (0.9,0.96) |
0.001 0.95 (0.92,0.98) |
0.002 0.95 (0.92,0.98) |
| Type B | 1.82 ± 3.37 | 2.27 ± 3.30 | 2.71 ± 3.66 |
< 0.001 1.06 (1.04,1.08) |
< 0.001 1.06 (1.04,1.08) |
< 0.001 1.05 (1.03,1.07) |
| Type C | 0.14 ± 0.57 | 0.31 ± 1.03 | 0.43 ± 1.12 |
< 0.001 1.26 (1.19,1.33) |
< 0.001 1.28 (1.21,1.35) |
< 0.001 1.28 (1.21,1.35) |
95% CI, 95% Confidence intervals
aModel 1: DFT was included as the only independent variable in the ordered logistic regression analysis
bModel 2: Social economic status, sex, area, education level, and household income per capita were added to Model 1
cModel 3: Oral health-related behaviours such as smoking status, tooth brushing frequency, use of dental floss, use of a toothpick and alcohol consumption were added to Model 2