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Table 2 Hypersensitivity evaluation by visual analogue scale (VAS) and change of VAS scores by evaluation stage and group (mean and standard deviation)

From: Efficacy of nano-carbonate apatite dentifrice in relief from dentine hypersensitivity following non-surgical periodontal therapy: a randomized controlled trial

Evaluation stage

Mean (SD)

test (n = 199)

ctrl (n = 188)

p

post-scaling (baseline)

4.40 ± 1.96

4.38 ± 2.23

0.820

post-polishing (0 week)

3.58 ± 2.40 †

3.63 ± 2.63 †

0.800

2 weeks

2.62 ± 1.85 †

2.96 ± 2.12 †

0.197

4 weeks

2.13 ± 1.76 †

2.71 ± 2.17 †

0.005**

6 weeks

1.98 ± 1.72 †

2.38 ± 2.10 †

0.098

change of VAS 0

0.83 ± 1.95

0.76 ± 1.64

0.818

change of VAS 2

1.77 ± 2.11

1.43 ± 2.14

0.344

change of VAS 4

2.27 ± 2.47

1.68 ± 2.24

0.036*

change of VAS 6

2.42 ± 2.35

2.01 ± 2.27

0.256

  1. †: statistically significantly different from baseline VAS by paired t test (p < 0.001)
  2. *: statistically significantly different from control group by mixed linear model (p < 0.05);
  3. **: statistically significantly different from control group by mixed linear model (p < 0.01)
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BMC Oral Health

ISSN: 1472-6831

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