Table 5

The percentage of response on questions of oral health knowledges and attitudes

Liaoning ProvinceUrbanRrualX2P valueEffect
Size
Agree N (%)Disagree N (%)Unknown N (%)Agree N (%)Disagree N (%)Unknown N (%)Agree N (%)Disagree N (%)Unknown N (%)
Oral health awareness
 1.Gum bleeding is normal when brushing your teeth551 (14.80)2635 (70.51)545 (14.69)212 (11.51)1372 (74.52)257 (13.95)339 (17.93)1263 (66.82)288 (15.23)34.91<0.0010.097
 2.Bacteria are one of the causes of inflammation of the gums2841 (76.13)234 (6.30)656 (17.57)1423 (77.29)110 (5.97)308 (16.73)1418 (75.02)124 (6.56)348 (18.41)2.6420.2670.027
 3.Cleaning your teeth is not useful for preventing inflammation of the gums288 (7.74)2830 (75.92)613 (16.34)144 (7.82)1405 (76.31)292 (15.86)144 (7.61)1425 (75.39)321 (16.40)0.870.6470.015
 4.Dental caries are caused by bacteria on teeth2278 (61.10)384 (10.34)1069 (28.57)1206 (68.44)180 (9.8)455 (24.71)1072 (58.22)204 (11.08)614 (33.35)32.39<0.0010.093
 5.Sweets can lead to dental caries2798 (75.12)299 (8.30)634 (16.58)1449 (78.70)140 (7.60)252 (13.69)1349 (73.75)159 (8.41)382 (20.21)30.80<0.0010.091
 6.Fluoride is useless to dental protection204 (5.55)1853 (49.72)1674 (44.73)99 (5.37)951 (51.65)791 (42.96)105 (5.55)902 (47.72)883 (46.71)5.8860.0530.04
 7.Pit and fissure sealant can prevent dental caries of adolescents1558 (41.82)479 (12.81)1694 (45.37)967 (52.52)185 (10.04)689 (37.42)591 (31.26)294 (15.55)1005 (53.17)173.87<0.0010.216
 8.Oral diseases can cause or exacerbate certain systemic diseases2219 (59.54)431 (11.45)1081 (29.01)1088 (59.09)213 (11.57)54 029.331131 (59.84)218 (11.50)541 (28.62)0.2490.8830.008
Oral health attitudes
 1.Oral health is important to life3473 (93.18)30 (0.71)228 (6.11)1699 (92.28)13 (0.71)129 (7.01)1774 (93.8)17 (0.89)99 (5.23)5.680.1280.039
 2.Regular oral examination is necessary2829 (75.8182 (2.28)820 (21.92)1383 (75.12)37 (1.68)421 (22.87)1446 (76.5)45 (2.38)399 (22.27)2.240.5240.024
 3.Teeth are born good or bad, no correlation with the protection186 (5.04)3333 (89.32)212 (5.64)92 (4.99)1629 (88.48)120 (6.51)94 (4.97)1704 (90.15)92 (4.86)4.8040.1870.036
 4.We should rely mainly on ourselves to prevent oral diseases3448 (92.41)84 (2.35)199 (5.24)1695 (92.06)36 (1.95)110 (5.97)1753 (92.7)48 (2.53)89 (4.71)4.4410.2180.034