Table 4 Perceived causes and preventive methods of dental caries (multiple response allowed)

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 %