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Table 3 Oral health knowledge of dental and medical students in 1st and 3rd year (%)a

From: Assessment of the oral health behavior, knowledge and status among dental and medical undergraduate students: a cross-sectional study

Question 1st year 3rd year
Dental students Medical students P Dental students Medical students P
Causes of dental caries
 Toothpaste without fluoride 10.0 16.4 0.062 15.5 13.9 0.657
 Frequent ingestion of sugar 52.6 55.2 0.607 60.2 55.9 0.397
 Dysbiosis of oral microflora 30.5 26.9 0.424 58.6 41.1 0.001
 Inadequate tooth brushing 41.6 41.3 0.954 52.5 40.6 0.020
 Don’t know 3.7 1.0 0.151 2.8 3.0 0.903
Causes of bleeding during tooth brushing
 Natural physiological phenomenon 7.4 6.5 0.726 3.3 8.9 0.024
 Periodontal disease 35.3 36.3 0.828 79.0 47.0 0.000
 Brushing too hard 37.4 35.3 0.674 33.7 38.6 0.318
 Excessive internal heatb 38.9 53.7 0.003 36.5 37.1 0.893
 Systemic disease 4.2 2.5 0.342 23.8 20.3 0.414
 Don’t know 3.2 2.0 0.681 1.1 3.0 0.359
Influence of dental plaque
 Affecting appearance 36.3 40.8 0.363 45.9 37.1 0.083
 Inducing dental caries 22.6 38.8 0.001 59.7 35.6 0.000
 Inducing periodontal disease 67.4 51.2 0.001 79.6 61.9 0.000
 No big deal 3.7 2.0 0.311 1.1 9.9 0.000
 Don’t know 6.8 5.5 0.573 1.7 3.0 0.611
Measures that prevent oral diseases
 Application of fluoride 50.5 13.9 0.000 66.9 23.3 0.000
 Pit and fissure sealing 72.6 16.9 0.000 84.5 25.7 0.000
 Tooth scaling 86.3 90.5 0.190 97.8 91.6 0.008
 Don’t know 2.6 3.0 0.833 1.7 2.0 1.000
Systemic diseases that may be related to oral diseases
 Heart disease 31.6 10.9 0.000 56.9 29.2 0.000
 Diabetes mellitus 34.7 13.9 0.009 83.4 43.6 0.000
 Hypertension 21.6 11.4 0.007 57.5 26.7 0.000
 Cancer 32.1 19.4 0.004 60.8 34.7 0.000
 None of the above 8.9 19.9 0.002 3.3 10.9 0.004
 Other diseases 21.1 47.3 0.000 30.4 23.8 0.144
 Don’t know 11.6 2.0 0.000 0.6 2.0 0.437
Which is more important for oral health: self-administration or dentist?
 Self-administration of oral hygiene 48.9 49.3 0.952 40.3 55.9 0.002
 Regular visit to dentist 51.1 50.7 59.7 44.1
  1. aPearson’s Chi-square test, bold numbers meant P < 0.05
  2. bExcessive internal heat: a concept in traditional Chinese medicine (TCM). People with excessive internal heat would have an increased risk of inflammation, sore throat, oral ulcer, acne, etc