Table 2 Alterations (mm) of bone height of different time-points (2 and 8 weeks after tooth extraction) at different sides (buccal and lingual). The reduction in bone height was calculated by comparing the retained sites and the neighboring extracted sites

Control

0.68 ± 0.04

0.41 ± 0.02

2.22 ± 0.11

0.60 ± 0.06

DBBM

0.22 ± 0.01^a

0.20 ± 0.04^a

0.29 ± 0.05^a

0.24 ± 0.01^a

DBBM+i-PRF

0.19 ± 0.01^a

0.16 ± 0.05^a

0.27 ± 0.02^a

0.21 ± 0.05^a

GNPs

0.21 ± 0.04^a

0.19 ± 0.02^a

0.24 ± 0.04^a

0.24 ± 0.07^a

GNPs+i-PRF

0.23 ± 0.02^a

0.14 ± 0.01^a

0.28 ± 0.03^a

0.20 ± 0.03^a

p-value

<0.01

<0.01

<0.01

<0.01