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. Author manuscript; available in PMC: 2020 Jan 15.
Published in final edited form as: Pediatr Dent. 2019 Jul 15;41(4):299–303.

Table 1.

Toothbrushing Time (in Seconds) and Pre/Post Differences after Seven and Fourteen Days Post-Baseline

Tooth Surfaces Baseline n=34
Mean (SD)
After 7 Days n=34
Mean (SD)
Pre/Post Difference
Mean (SD)
95% CI* P-value**
All surfaces 46.2 (31.3) 69.4 (30.4) 23.1 (31.5) 12.2, 34.1 0.0002
Lingual surfaces 0.9 (2.3) 13.2 (14.1) 12.3 (14.2) 7.4, 17.3 <.0001
Buccal surfaces 30.1 (28.6) 38.0 (21.7) 7.8 (21.9) 0.2, 15.4 0.045
Occlusal surfaces 15.2 (10) 18.2 (10.5) 3.0 (11.0) −0.8, 6.8 0.12
Maxillary occlusal surfaces 5.9 (6.1) 9.2 (6.3) 3.3 (5.9) 1.2, 5.4 0.0028
Mandibular occlusal surfaces 9.3 (6.7) 9.0 (5.6) −0.3 (7.9) −3.1, 2.5 0.83
Posterior buccal surfaces 15.7 (17.7) 22.8 (14.9) 7.1 (12.8) 2.6, 11.6 0.0027
Anterior buccal surfaces 14.5 (14.3) 15.2 (10.2) 0.7 (12.5) −3.7, 5.1 0.74
Tooth Surfaces Baseline n=15
Mean (SD)
After 14 Days n=15
Mean (SD)
Pre/Post Difference
Mean (SD)
95% CI* P-value**
All surfaces 39.9 (21.0) 108.9 (47.6) 69.0 (51.2) 40.7, 97.3 0.0001
Lingual surfaces 0.9 (1.6) 36.0 (22.3) 35.1 (22.1) 22.8, 47.3 <.0001
Buccal surfaces 24.5 (18.3) 45.4 (18.0) 20.9 (18.0) 10.9, 30.8 0.0005
Occlusal surfaces 14.4 (10.8) 27.5 (17.0) 13.1 (18.6) 2.7, 23.4 0.017
Maxillary occlusal surfaces 6.5 (7.3) 13.1 (9.8) 6.7 (10.5) 0.8, 12.5 0.028
Mandibular occlusal surfaces 7.9 (5.6) 14.3 (7.9) 6.4 (10.0) 0.9, 11.9 0.026
Posterior buccal surfaces 13.5 (11.5) 28.4 (11.4) 14.9 (11.9) 8.3, 21.5 0.0003
Anterior buccal surfaces 11.1 (9.2) 17.0 (7.6) 5.9 (7.6) 1.7, 10.1 0.0089
*

95% confidence interval for the average change between time points

**

Paired t-test, p-value

Statistically significant after adjustment for multiple testing, Holm’s method (p-value < 0.05)