Table 3 Comparison of pre-post differences in periodontal health indicators between the obese group and normal weight group

Dental plaque index

51.68 ± 17.85

74.61 ± 33.03

−22.93 ± 33.71

<0.001

42.33 ± 27.32

58.17 ± 32.77

−15.83 ± 21.99

0.030

0.496

Gingival index

22.95 ± 55.20

19.39 ± 29.85

3.56 ± 43.71

.0.605

43.75 ± 95.71

30.58 ± 62.59

13.17 ± 38.72

0.264

0.496

Sites of BOP

10.12 ± 27.64

5.85 ± 12.94

4.27 ± 22.63

0.234

19.50 ± 48.48

11.08 ± 32.20

8.41 ± 17.89

0.131

0.563

IL-1β(pgmL⁻¹)

96.89 ± 62.53

38.51 ± 37.72

58.38 ± 65.55

<0.001

66.61 ± 58.46

56.54 ± 50.16

10.07 ± 21.08

0.642

0.033

MMP-8(ngmL⁻¹)

7.24 ± 6.02

3.05 ± 3.46

4.19 ± 5.61

<0.001

5.16 ± 4.07

3.66 ± 2.60

1.49 ± 4.61

0.286

0.134

MMP-9(ngmL⁻¹)

9.46 ± 4.95

6.11 ± 5.17

3.36 ± 6.30

0.002

7.67 ± 5.53

9.20 ± 8.04

−1.52 ± 9.71

0.597

0.043