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Table 2 Quantitative bone densities of normal bone, new bone in-growth density (AOI density), and density of bone adjacent to the defect area (BAD density) in Houns Field units (HU) obtained by CBCT and expressed as mean ± SD at the 30th, 60th and 90th days

From: Does zinc oxide nanoparticles potentiate the regenerative effect of platelet-rich fibrin in healing of critical bone defect in rabbits?

Groups

30th

60th

90th

P value

Bone densities (Houns Field units)

 Normal density

  Control

(1335.75 ± 67.20)b*

(1582.03 ± 79.97)a*

(1643.75 ± 20.45)a*

0.000

  PRF

(1245.83 ± 125.49)b*

(1460.43 ± 177.28)a*

(1554.73 ± 250.56)a*

0.012

  PRF/ZnONPs

(1326.04 ± 134.37)b*

(1443.56 ± 157.81)ab*

(1569.52 ± 213.89)a*

0.004

  P value

0.241

0.127

0.613

 

  Total Mean

(1302.54 ± 115.58)c

(1508.20 ± 144.52)b

(1612.69 ± 172.18)a

0.000

 AOI density

 Normal density

(1302.54 ± 115.58)c***

(1508.20 ± 144.52)b**

(1612.69 ± 172.18)a**

0.000

  Control

(1042.32 ± 181.63)a**

(1197.86 ± 218.81)a*

(1284.53 ± 188.30)a*

0.186

  PRF

(706.45 ± 136.31)b*

(1037.48 ± 147.88)a*

(1212.52 ± 79.18)a*

0.000

  PRF/ZnONPs

(1079.10 ± 48.41)b**

(1498.95 ± 77.19)a**

(1534.34 ± 111.98)a**

0.000

  P value

0.000

0.000

0.009

 

 BAD density

 Normal density

(1302.54 ± 115.58)c**

(1508.20 ± 144.52)b**

(1612.69 ± 172.18)a***

0.000

  Control

(1295.00 ± 15.56)a**

(919.70 ± 243.53)a*

(873.86 ± 150.03)a*

0.104

  PRF

(1049.20 ± 59.48)b*

(1050.00 ± 49.49)b*

(1201.00 ± 15.56)a**

0.027

  PRF/ZnONPs

(1070.80 ± 00.00)b*

(1297.50 ± 3.53)a**

(1394.00 ± 66.47)a**

0.008

  P value

0.000

0.000

0.000

 
  1. a,b,cMedians and ranges with different small superscripts letters in the same row are significantly different at P < 0.05
  2. *,**,***Medians and ranges with different asterisks superscripts in the same column are significantly different at P < 0.05