Table 2.
Prevalence of dementia according to oral health status and age category.
| Age, years | Oral health | Male | P-value† | Female | P-value† | |||
|---|---|---|---|---|---|---|---|---|
| Dementia | Normal | Dementia | Normal | |||||
| 65–70 | Periodontitis | Yes | 377 (1.4) | 27,161 (98.6) | <0.001 | 617 (2.3) | 25,816 (97.7) | <0.001 |
| No | 4,891 (1.8) | 260,574 (98.2) | 6,931 (2.7) | 250,335 (97.3) | ||||
| Denture wear | Yes | 795 (2.5) | 30,579 (97.5) | <0.001 | 989 (3.8) | 25,394 (96.3) | <0.001 | |
| No | 4,473 (1.7) | 257,156 (98.3) | 6,559 (2.6) | 250,757 (97.5) | ||||
| 71–75 | Periodontitis | Yes | 284 (3.1) | 8,988 (96.9) | <0.001 | 425 (4.8) | 8,526 (95.3) | <0.001 |
| No | 4,551 (4.0) | 108,823 (96.0) | 6,783 (6.1) | 104,176 (93.9) | ||||
| Denture wear | Yes | 982 (5.1) | 18,247 (94.9) | <0.001 | 1,520 (7.7) | 18,245 (92.3) | <0.001 | |
| No | 3,853 (3.7) | 99,564 (96.3) | 5,688 (5.7) | 94,457 (94.3) | ||||
| 76–80 | Periodontitis | Yes | 349 (5.7) | 5,751 (94.3) | <0.001 | 552 (8.8) | 5,706 (91.2) | <0.001 |
| No | 7,138 (7.3) | 90,861 (92.7) | 11,991 (11.5) | 92,152 (88.5) | ||||
| Denture wear | Yes | 2,060 (9.0) | 20,872 (91.0) | <0.001 | 3,669 (13.1) | 24,350 (86.9) | <0.001 | |
| No | 5,427 (6.7) | 75,740 (93.3) | 8,874 (10.8) | 73,508 (89.2) | ||||
| ≥81 | Periodontitis | Yes | 147 (11.7) | 1,112 (88.3) | 0.007 | 199 (16.3) | 1,021 (83.7) | <0.001 |
| No | 4,452 (14.4) | 26,532 (85.6) | 7,590 (21.5) | 27,667 (78.5) | ||||
| Denture wear | Yes | 1,661 (16.1) | 8,634 (83.9) | <0.001 | 2,914 (21.9) | 10,394 (78.1) | 0.055 | |
| No | 2,938 (13.4) | 19,010 (86.6) | 4,875 (21.0) | 18,294 (79.0) | ||||
†P-value calculated by chi-squared test. The data are presented as n(%).