Table 3. The amount of MBL and ABL according to the implant connection type (n=355).

Variables	Category	Subjects	MBL (mm)	ABL (mm)	P value (MBL/ABL)
Connection type	EC	206 (58.0)	0.47±0.65a)	0.07±0.09a)	<0.001/<0.001
	IC	149 (42.0)	0.15±0.33a)	0.02±0.05a)
Splinting	Single	70 (19.7)	0.31±0.58	0.05±0.08	0.676/0.642
	Splinted	285 (80.3)	0.34±0.56	0.05±0.08
Use of cement	Cemented	77 (21.3)	0.27±0.53	0.04±0.08	0.178/0.195
	Non-cemented	270 (78.7)	0.35±0.58	0.05±0.08

Data are shown number (%) or mean±SD.

MBL: marginal bone loss, ABL: annual bone loss, EC: external-connection, IC: internal-connection, SD: standard deviation.

^a)Statistically significant between groups (P<0.05). EC implants showed more MBL and ABL.