Table 7.

Stereometric parameters obtained as a result of the analysis of images obtained with the use of a confocal microscope.

		M1	M2	M3	Average
Height parameters
Skewness (Ssk)		−1.081	−0.9343	−1.078	−1.0311
Root mean square height (Sq)	mm	0.2426	0.2312	0.2562	0.2433
Kurtosis (Sku)		4.761	3.835	4.557	4.3843
Maximum peak height (Sp)	mm	0.5818	0.7783	0.6111	0.6571
Maximum pit height (Sv)	mm	0.9096	0.8126	0.8921	0.8714
Maximum height (Sz)	mm	1.491	1.591	1.503	1.5283
Arithmetic mean height (Sa)	mm	0.1847	0.1808	0.1882	0.1846
Functional parameters
Areal material ratio (Smr)	%	0.0000953	0.0001907	0.0001907	0.000159
Inverse areal material ratio (Smc)	mm	0.2592	0.2497	0.2647	0.2579
Extreme peak height (Sxp)	mm	0.7224	0.6618	0.7622	0.7155
Spatial parameters
Auto-correlation length (Sal)	mm	0.2849	0.2398	0.2945	0.2731
Texture-aspect ratio (Str)		0.8517	0.6526	0.7773	0.7605
Texture direction (Std)		153.8	147.8	159.5	153.7
Hybrid parameters
Root mean square gradient (Sdq)		7.897	7.833	8.823	8.1843
Developed interfacial area ratio (Sdr)	%	193.6	222.5	214.0	210
Functional parameters (volume)
Material volume (Vm)	mm³/mm²	0.007349	0.006012	0.01025	0.0079
Void volume (Vv)	mm³/mm²	0.2666	0.2557	0.2749	0.2657
Peak material volume (Vmp)	mm³/mm²	0.007349	0.006012	0.01025	0.0079
Core material volume (Vmc)	mm³/mm²	0.2010	0.2093	0.1989	0.2031
Core void volume (Vvc)	mm³/mm²	0.2262	0.2185	0.2274	0.224
Pit void volume (Vvv)	mm³/mm²	0.04036	0.0372	0.04756	0.0417
Feature parameters
Density of peaks (Spd)	1/mm²	1.835	3.363	2.446	2.548
Arithmetic mean peak curvature (Spc)	1/mm	2699	4843	4007	3850
Ten point height (S10z)	mm	1.113	1.278	1.147	1.1793
Five point peak height (S5p)	mm	0.4345	0.5552	0.4348	0.4748
Five point pit height (S5v)	mm	0.6783	0.7230	0.7124	0.7046
Mean dale area (Sda)	mm²	0.1847	0.1106	0.1621	0.1525
Mean dale volume (Sdv)	mm³	0.01834	0.003223	0.01043	0.0107