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Table 2 Comparison between the two studied groups according to different parameters

From: Intrapocket application of tea tree oil gel in the treatment of stage 2 periodontitis

 

Tests (n = 15)

Control (n = 15)

U

p

Pockets depth (mm)

    

Before

    

 Mean ± SD

5.4 ± 1.1

5.5 ± 1.1

105.5

0.775

 Median (Min.–Max.)

6a (3–6)

6a (3–6)

  

3 months

    

  Mean ± SD

3.3 ± 0.6

4.3 ± 1.5

76.50

0.137

 Median (Min.–Max.)

3b (2–4)

4a (2–6)

  

6 months

    

 Mean ± SD

1.9 ± 0.9

2.6 ± 0.6

65.0

0.050

  Median (Min.–Max.)

2c (1–3)

3b (1–3)

  

p0

 < 0.001*

 < 0.001*

  

 %decrease after 3 m

34.9 ± 26.4

21.3 ± 25.5

80.0

0.187

  Decrease after 6 m

3.5 ± 1.4

2.9 ± 1

80.50

0.187

%decrease after 6 m

62 ± 22

51.6 ± 16.8

69.50

0.074

Clinical attachment level (mm)

    

Before

    

 Mean ± SD

3.3 ± 0.5

3.4 ± 0.5

97.50

0.539

 Median (Min.–Max.)

3a (3–4)

3a (3–4)

  

3 months

    

 Mean ± SD

1.4 ± 0.5

1.7 ± 0.6

79.50

0.174

  Median (Min.–Max.)

1b (1–2)

2b (1–3)

  

6 months

    

 Mean ± SD

0.4 ± 0.5

1.2 ± 0.7

45.0*

0.004*

 Median (Min.–Max.)

0c (0–1)

1b (0–2)

  

p0

 < 0.001*

 < 0.001*

  

%decrease after 3 m

57.8 ± 12.4

48.3 ± 19.5

81.0

0.202

Decrease after 6 m

2.9 ± 0.6

2.2 ± 0.8

57.50*

0.021*

%decrease after 6 m

87.8 ± 15.7

64.4 ± 19.5

43.0*

0.003*

  1. Medians of periods in the same column with common small letters are not significant
  2. U: Mann Whitney test
  3. p: p value for comparing between the two groups
  4. p0: p value for Friedman test for comparing between the different studied periods
  5. *: Statistically significant at p ≤ 0.05