Table 4 Prevalence of dental caries of first permanent molar associated risk factors according to the questionnaire
Variables | Subjects | N | Prevalence (%) | Chi-square value | P value |
|---|---|---|---|---|---|
Oral health behavior | |||||
Frequency of tooth brushing* | |||||
Occasionally | 125 | 90 | 72.00 | 8.565 | 0.036 |
< once a day | 168 | 122 | 72.62 | ||
Once a day | 582 | 419 | 71.99 | ||
> once a day | 980 | 645 | 65.82 | ||
Tooth brushing method | |||||
Horizontally | 392 | 271 | 69.13 | 2.281 | 0.516 |
Vertically | 178 | 121 | 67.98 | ||
Mixed | 959 | 649 | 67.67 | ||
Casually | 326 | 235 | 72.09 | ||
Duration of tooth brushing | |||||
≤ 1 min | 167 | 118 | 70.66 | 1.404 | 0.705 |
1–2 min | 528 | 368 | 69.70 | ||
2–3 min | 342 | 227 | 66.37 | ||
≥ 3 min | 818 | 563 | 68.83 | ||
Frequency of toothbrush replacement | |||||
≤ 3 months | 1187 | 791 | 66.64 | 7.614 | 0.055 |
3–6 months | 297 | 218 | 73.40 | ||
6–12 months | 163 | 120 | 73.62 | ||
≥ 1 year | 208 | 147 | 70.67 | ||
Reminding from parents | |||||
Never | 596 | 424 | 71.14 | 3.364 | 0.186 |
Occasionally | 509 | 336 | 66.01 | ||
Usually | 750 | 516 | 68.80 | ||
Dietary habits | |||||
Snacks before bed | |||||
Never | 824 | 557 | 67.60 | 1.225 | 0.747 |
Occasionally | 207 | 145 | 70.05 | ||
Sometimes | 735 | 510 | 69.39 | ||
Usually | 89 | 64 | 71.91 | ||
Frequency of carbonated drinks | |||||
Never | 1091 | 732 | 67.09 | 6.611 | 0.085 |
< once a day | 375 | 256 | 68.27 | ||
Once a day | 202 | 148 | 73.27 | ||
≥ twice a day | 187 | 140 | 74.87 | ||
Frequency of desserts* | |||||
Never | 355 | 225 | 63.38 | 9.067 | 0.028 |
< once a day | 662 | 456 | 68.88 | ||
Once a day | 486 | 335 | 68.93 | ||
≥ twice a day | 352 | 260 | 73.86 | ||
Frequency of candy/chocolate* | |||||
Never | 384 | 248 | 64.58 | 8.706 | 0.033 |
< once a day | 463 | 313 | 67.60 | ||
Once a day | 441 | 300 | 68.03 | ||
≥ twice a day | 567 | 415 | 73.19 | ||
Self-assessment of dental health, dental knowledge and attitude | |||||
Tooth status self-assessment*** | |||||
Correct | 367 | 212 | 57.77 | 33.918 | < 0.001 |
Incorrect | 808 | 603 | 74.63 | ||
Unclear | 680 | 461 | 67.79 | ||
The importance of oral health in the quality of life* | |||||
Agree | 873 | 594 | 68.04 | 10.994 | 0.012 |
Disagree | 252 | 155 | 61.51 | ||
Never thought | 253 | 178 | 70.36 | ||
Unaware | 477 | 349 | 73.17 | ||
Brushing teeth prevent caries* | |||||
Agree | 730 | 463 | 63.42 | 4.863 | 0.027 |
Disagree | 1190 | 813 | 68.32 | ||
Pit and fissure sealant | |||||
Done | 252 | 170 | 67.46 | 0.499 | 0.779 |
Not done | 799 | 556 | 69.59 | ||
Never heard | 804 | 550 | 68.41 | ||
Fluoride for tooth protection | |||||
Used | 305 | 213 | 69.84 | ||
Never used | 417 | 289 | 69.30 | ||
Never heard | 871 | 592 | 67.97 | 0.537 | 0.911 |
Unclear | 262 | 182 | 69.47 | ||
The necessity of regular dental inspection | |||||
Agree | 1429 | 977 | 68.37 | 1.197 | 0.550 |
Disagree | 140 | 102 | 72.86 | ||
Unclear | 286 | 197 | 68.88 |