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. 2019 May 31;7:e6997. doi: 10.7717/peerj.6997

Table 5. The percentage of response on questions of oral health knowledge and attitude (%).

Agree Disagree Unknown
Oral health awareness
1. Gum bleeding is normal when brushing your teeth. 12.1 77.7 10.2
2. Bacteria are one of the causes of inflammation of the gums. 79.0 6.5 14.5
3. Cleaning your teeth is not useful for preventing inflammation of the gums. 14.2 64.8 21.0
4. Dental caries are caused by bacteria on teeth. 74.9 7.1 18.0
5. Sweets can lead to tooth decay. 86.9 6.6 6.5
6. Fluoride is useless to dental protection. 8.1 47.2 44.7
7. Pit and fissure sealant can prevent dental caries of children 27.1 13.8 59.1
8. Oral diseases can cause or exacerbate certain systemic diseases. 35.2 10.3 54.5
Oral health attitudes
1. Oral health is important to life 98.7 0.7 0.6
2. Regular oral examination is necessary. 92.6 2.2 5.2
3. Teeth are born good or bad, no correlation with the protection 4.8 93.3 1.9
4. We should rely mainly on ourselves to prevent oral diseases. 98.0 1.1 0.9