Table 1.

Implant identification.

Implant ID	Size (diameter × length)	Implantation length
Control	ϕ 4.1 mm RN*	0
	SLA 12mm**
	tapered effect implant
Implant #1	4.8 mm	unknown
	6 mm
Implant #2	3.3 mm	unknown
	10 mm
Implant #3	4.1 mm	unknown
	8 mm
Implant #4	4.8 mm	4 weeks
	10 mm
Implant #5	4.8 mm	unknown
	10 mm

*RN: regular neck; **SLA: sand blasted, large grit, acid etched surface.