Table 5.

The mean value of the surface area (in μm²) of the residual biomaterial (BmA) of nano-hydroxyapatite/chitosan (nHAp/CS) scaffold was reduced from 2nd (3545719.83 μm²) to 4th week (1114298.18 μm²) (P = 0.000 < < 0.001), as well as from 2nd (3545719.83 μm²) to 8th week (1907642.54 μm²) (P = 0.001). The apparent increase in BmA from the 4th (1114298.18 μm²) to 8th week (1907642.54 μm²) was not statistically significant (P = 0.204)

	Week	Mean	Std. deviation	Std. error	95% confidence
					Lower bound	Upper bound	P value
aBmA	2	3545719.83	1339540.27	386691.96	2694616.55	4396823.11	2→4 week: 0.000 2→8 week: 0.001
	4	1114298.18	575732.74	173589.95	727515.66	1501080.70	2→4 week: 0.000 4→8 week: 0.204
	8	1907642.54	836147.56	252107.97	1345910.96	2469374.12	2→8 week: 0.001 4→8 week: 0.204

^aBmA = mean value of surface area (in μm²) of the residual biomaterial (nano-hydoxyapatite/chitosan scaffold, nHAp/CS)