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. 2020 Oct 13;14:1901–1909. doi: 10.2147/PPA.S270215

Table 3.

Change in Knowledge and Attitudes Towards Oral Health Within the Groups

Mobile Application (n = 114) Educational Lecture (n = 120)
Before After p Before After p
How often do you brush your teeth?
 I rarely brush. 8 (7.02%) 3 (2.6%) 0.87 17 (14.2%) 5 (4.17%) <0.001*
 Once daily irregularly 13 (11.4%) 5 (4.4%) 13 (10.8%) 13 (10.8%)
 Once daily regularly 15 (13.2%) 30 (26.3%) 27 (22.5%) 12 (10.0%)
 Twice daily regularly (A) 78 (68.4%) 76 (66.7%) 63 (52.5%) 90 (75.0%)
How often do you change your toothbrush?
 Every 3 months (A) 53 (46.5%) 78 (68.4%) <0.001* 40 (33.3%) 54 (45.0%) 0.08
 Every 6 months 31 (27.2%) 22 (19.3%) 27 (22.5%) 40 (33.3%)
 After 1 year 8 (7.02%) 8 (7.02%) 10 (8.33%) 2 (1.67%)
 Till bristles fray 22 (19.3%) 6 (5.2%) 43 (35.8%) 24 (20.0%)
Do you think you know how to brush your teeth properly?
 No 5 (4.4%) 2 (1.75%) <0.001* 8 (6.67%) 2 (1.67%) 0.005*
 To some extent 62 (54.4%) 31 (27.2%) 67 (55.8%) 50 (41.7%)
 Yes (A) 47 (41.2%) 81 (71.1%) 45 (37.5%) 68 (56.7%)
In your opinion, what tooth brushing technique would be best?
 Horizontal movement 15 (13.2%) 14 (12.3%) 0.035* 24 (20.0%) 12 (10.0%) <0.001*
 Vertical movement 23 (20.2%) 11 (9.6%) 26 (21.7%) 13 (10.8%)
 Circular movement (A) 69 (60.5%) 83 (72.8%) 53 (44.2%) 87 (72.5%)
 I do not know 7 (6.14%) 6 (5.26%) 17 (14.2%) 8 (6.67%)
What type of toothpaste do you use?
 I do not know 61 (53.5%) 48 (42.1%) 0.08 85 (70.8%) 21 (17.5%) <0.001*
 Toothpaste with fluoride (A) 49 (43.0%) 62 (54.4%) 32 (26.7%) 96 (80.0%)
 Toothpaste without fluoride 4 (3.51%) 4 (3.51%) 3 (2.50%) 3 (2.50%)
Do you floss your teeth?
 No 58 (50.9%) 37 (32.5%) 0.04* 74 (61.7%) 26 (21.7%) <0.001*
 Sometimes 37 (32.5%) 45 (39.5%) 31 (25.8%) 52 (43.3%)
 Yes (A) 19 (16.7%) 32 (28.1%) 15 (12.5%) 42 (35.0%)
How often do you use mouthwash?
 Only when prescribed by the doctor 10 (8.7%) 39 (34.2%) <0.001* 7 (5.8%) 49 (40.8%) 0.014*
 I do not use mouthwash 57 (50.0%) 26 (22.8%) 74 (61.7%) 21 (17.5%)
 Once per day every 2 weeks (A) 1 (0.88%) 18 (15.8%) 8 (6.6%) 22 (18.3%)
 Once a week 10 (8.7%) 31 (27.2%) 16 (13.3%) 28 (23.3%)
 Once a day 36 (31.6%) 0 (0.00%) 15 (12.5%) 0 (0.00%)
How often do you visit the dentist?
 On demand 83 (72.8%) 38 (33.3%) <0.001* 96 (80.8%) 26 (21.7%) <0.001*
 Once a year 3 (2.6%) 4 (3.5%) 5 (4.1%) 19 (15.8%)
 Every 6 months (A) 9 (7.9%) 35 (30.7%) 5 (4.1%) 61 (50.8%)
 Every 3 months 19 (16.7%) 37 (32.5%) 13 (10.8%) 14 (11.7%)

Notes: Statistical analysis was performed using the McNemar’s test. (A) The correct answer. *P ≤ 0.05.