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Table 3 Hypersensitivity evaluation by Schiff score and change of Schiff 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)

1.64 ± 0.64

1.58 ± 0.63

0.457

post-polishing (0 week)

1.28 ± 0.85 †

1.21 ± 0.85 †

0.574

2 weeks

0.92 ± 0.71 †

1.04 ± 0.75 †

0.200

4 weeks

0.69 ± 0.71 †

0.97 ± 0.77 †

0.000***

6 weeks

0.66 ± 0.68 †

0.84 ± 0.78 †

0.047*

change of Schiff 0

0.36 ± 0.72

0.37 ± 0.64

0.973

change of Schiff 2

0.72 ± 0.81

0.54 ± 0.78

0.080

change of Schiff 4

0.94 ± 0.92

0.61 ± 0.83

0.000***

change of Schiff 6

0.97 ± 0.90

0.74 ± 0.80

0.027*

  1. †: statistically significantly different from baseline Schiff score 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 < 0.001)
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BMC Oral Health

ISSN: 1472-6831

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