Table 2. VGVs obtained from CBCT.

Group	Baseline	5 weeks later	7 weeks later	P value
Group 1 (n=4)	65.6±122.0a)	286.9±38.1b)	356.1±101.9b)	0.018
Group 2 (n=4)	−61.7±148.7a)	285.9±108.6b)	356.5±95.2b)	0.018
Group 3 (n=4)	−25.1±86.3a)	295.4±135.9b)	267.8±144.5b)	0.018
Group 4 (n=5)	63.8±106.8a)	246.9±74.7b)	215.8±26.2b)	0.018

Data are shown as mean±standard deviation.

VGV: voxel gray value, CBCT: cone-beam computed tomography.

^a,b)The same superscript letters indicate values that are not significantly different. (P>0.05).