Table 1.
Proband periodontal disease prevalence, extent of periodontal disease, bleeding on probing (BOP) and plaque score, and proband caries and tooth loss prevalence and severity, at age 32, and prevalence of one or more sites with 3+mm incident CAL between age 26 and age 32, by familial-risk category for periodontal disease.
| Risk category for periodontal disease according to parental periodontitis history | ||||||
|---|---|---|---|---|---|---|
| One or both parents sample | Both parents sample | |||||
| High risk | Low risk | Total | High risk | Low risk | Total | |
| Proband periodontal disease prevalence (%) | ||||||
| 1+ sites with 4+mm CAL | 60 (37.3) | 192 (27.9)a | 252 (29.7) | 47 (38.2) | 122 (24.3)b | 169 (27.0) |
| 2+ sites with 4+mm CAL | 40 (24.8) | 131 (19.0) | 171 (20.1) | 31 (25.2) | 78 (15.5)a | 109 (17.4) |
| 1+ sites with 5+mm CAL | 28 (17.4) | 76 (11.0)a | 104 (12.2) | 22 (17.9) | 47 (9.4)c | 69 (11.0) |
| 1+ sites with 3+mm incident CAL | 26 (16.1) | 76 (11.0) | 102 (12.0) | 20 (16.3) | 46 (9.2)a | 66 (10.6) |
| Proband periodontal disease extent (SD) | ||||||
| Mean % of sites with 4+mm CAL | 2.8 (7.1) | 1.8 (5.7) | 2.0 (6.0) | 2.6 (5.5) | 1.3 (4.4)d | 1.6 (4.7) |
| Mean % of sites with 5+mm CAL | 0.7 (3.1) | 0.5 (2.6) | 0.5 (2.7) | 0.6 (1.5) | 0.4 (2.5) | 0.4 (2.4) |
| Other periodontal measures (SD) | ||||||
| Mean % sites with BOP | 10.6 (8.0) | 8.1 (7.0)e | 8.6 (7.2) | 10.3 (7.8) | 7.5 (6.4)e | 8.1 (6.8) |
| Mean plaque score | 0.8 (0.6) | 0.7 (0.5)d | 0.8 (0.5) | 0.8 (0.6) | 0.7 (0.5) | 0.7 (0.5) |
| Smoker at 32 | 64 (39.8) | 216 (31.4) | 280 (33.0) | 45 (36.6) | 139 (27.7) | 184 (29.4) |
a
p<0.05; chi-square test.
b
p<0.005; chi-square test.
c
p<0.01; chi-square test.
d
p<0.05; independent samples t-test.
e
p<0.001; independent samples t-test.