Table 2.

Average BIC value for implant with etched surface.

	Only Etching
	Before Demineralization				After Demineralization
cross-sectional plane	0°–180°	45°–225°	90°–270°	135°–315°	0°–180°	45°–225°	90°–270°	135°–315°
implant–edge connection line [mm]	16,781	16,957	16,853	15,787	19,950	15,329	17,596	17,621
implant–air connection line [mm]	1942	2335	2379	1320	6741	1204	1458	2852
implant–bone connection line (BIC) [%]	88	86	86	92	66	92	92	84
average BIC [%]	88				83
standard deviation BIC [%]	3				12