Background
Method
Sample size and selection of children
Questionnaire survey
Clinical examination
Data entry and analysis
Results
Gender | n (%) | % caries | %PA | Mean DMFT(SD) | Mean DT(SD) | Mean MT(SD) | Mean FT(SD) | Mean PA(SD) | Mean A(SD) |
---|---|---|---|---|---|---|---|---|---|
Boys | 399 (49 %) | 37 % | 13 % | 0.8 (1.2) | 0.7 (1.1) | <0.1 (0.2) | 0.1 (0.3) | 0.2 (0.5) | <0.1 (0.1) |
Girls | 424 (51 %) | 43 % | 17 % | 1.1 (1.7) | 0.9 (1.4) | <0.1 (0.2) | 0.2 (0.8) | 0.2 (0.6) | <0.1 (0.1) |
Total | 823 (100 %) | 40 % | 15 % | 0.9 (1.5) | 0.8 (1.3) | <0.1 (0.2) | 0.1 (0.6) | 0.2 (0.6) | <0.1 (0.1) |
p-value | 0.047 | 0.205 | 0.002 | 0.010 | 0.322 | 0.016 | 0.232 | 0.940 |
Factor (No.) | All (%) | Boys (%) | Girls (%) | p-value |
---|---|---|---|---|
Brushing twice or more daily (n = 798) | <0.001 | |||
Yes | 310 (39 %) | 112 (29 %) | 198 (48 %) | |
No | 488 (61 %) | 275 (71 %) | 213 (52 %) | |
Eating snacks daily (n = 797) | 0.711 | |||
Yes | 475 (60 %) | 235 (60 %) | 240 (59 %) | |
No | 322 (40 %) | 155 (40 %) | 167 (41 %) | |
Visiting dentist within last year (n = 802) | 0.708 | |||
Yes | 233 (29 %) | 116 (30 %) | 117 (29 %) | |
No | 569 (71 %) | 275 (70 %) | 294 (72 %) |
Independent variable | DMFT > 0 (n, %) | p-value |
---|---|---|
Gender | ||
Boy | 160 (40 %) | 0.017 |
Girl | 206 (49 %) | |
Location of residence | 0.169 | |
Town | 181 (47 %) | |
Village | 185 (43 %) | |
Brush teeth twice or more daily | 0.524 | |
Yes | 129 (42 %) | |
No | 192 (39 %) | |
Take sugary snacks daily | 0.015 | |
Yes | 208 (44 %) | |
No | 113 (35 %) | |
Visit a dentist within last year | 0.413 | |
Yes | 99 (43 %) | |
No | 224 (39 %) |
Perceived cause of dental caries | Number | Percentage |
Sugar and sweet food | 619 | 77 % |
Poor oral hygiene | 406 | 51 % |
Bacteria, plaque | 322 | 40 % |
Acid | 197 | 25 % |
Traditional Chinese belief (e.g. hot air) | 74 | 9 % |
Don’t know | 57 | 7 % |
Other reasons | 2 | 0.2 % |
Perceived method of caries prevention | Number | Percentage |
Take less sugar | 546 | 68 % |
Rinse with water after eating | 539 | 67 % |
Brush teeth properly | 358 | 45 % |
Visit a dentist | 154 | 19 % |
Use fluoride toothpaste | 143 | 18 % |
Don’t know | 39 | 5 % |
Other method | 1 | 0.1 % |
Independent variables | Group | Odds ratio | 95 % C.I. | p-value |
---|---|---|---|---|
Gender | Girls | 1.371 | 1.034-1.819 | 0.028 |
Boysa | ||||
Visited a dentist within last year | Yes | 1.410 | 1.056-1.883 | 0.020 |
Noa | ||||
Intercept | 0.555 | <0.001 |
Total | Boys | Girls | p-value | |
---|---|---|---|---|
No. (%) of children | ||||
Highest CPI = 0 | 61 (7 %) | 31 (8 %) | 30 (7 %) | 0.704 |
Highest CPI = 1 | 388 (47 %) | 183 (46 %) | 205 (48 %) | 0.476 |
Highest CPI = 2 | 374 (46 %) | 185 (46 %) | 189 (45 %) | 0.606 |
Mean (SD) number of sextants | ||||
Healthy (CPI = 0) | 0.1 (0.4) | 0.2 (0.4) | 0.1 (0.4) | 0.196 |
Bleeding only (CPI = 1) | 5.1 (1.1) | 5.0 (1.2) | 5.1 (1.0) | 0.336 |
With calculus (CPI = 2) | 0.8 (1.0) | 0.8 (1.1) | 0.7 (1.0) | 0.572 |