| Question 4: On what grounds do you consider tooth decay occurs? Parents answers | ||
| Category | No. | % |
| Poor hygiene | 812 | 39.0 |
| Not brushing teeth | 646 | 31.0 |
| By eating sweet | 305 | 14.0 |
| For lack of brushing | 117 | 5.6 |
| Slight cleaning | 85 | 4.0 |
| Junk food | 47 | 2.2 |
| Don’t know | 29 | 1.4 |
| For lack of calcium | 14 | 0.7 |
| By not going to the dentist | 12 | 0.6 |
| Bad brushing | 8 | 0.4 |
| Careless | 7 | 0.3 |
| Presence of plaque | 3 | 0.1 |
| Acid in the mouth | 3 | 0.1 |