Early marginal bone stability of dental implants placed in a transalveolarly augmented maxillary sinus: a controlled retrospective study of surface modification with calcium ions

International Journal of Implant Dentistry

Table 3 Outcomes of experimental and control groups

Variable		Experimental	Control	P < 0.05
Number of implants		34	31
Bone type	II	35.3%	74.2%	Yes^a
	III	47.1%	22.6%
	IV	17.6%	3.2%
Follow-up time (months)		13 ± 1^d	13 ± 2^d	No^b
Insertion torque (N cm)		36 ± 15^d	30 ± 15^d	No^b
Implant failure		0	2	No^c
Proximal bone loss (mm)		0.36 ± 0.42^d	0.61 ± 0.39^d	Yes^b