Table 4.

Bone loss around the implants at different follow-up controls, in mm (implant-level).

	Baseline- 1 year	Baseline- 3 years
	n ∗; mean (SD); median; CI 95%	n ∗; mean (SD); median; CI 95%
All implants	213; 0.21 (±0.15); 0.18; 0.19–0.23	213; 0.25 (±0.11); 0.25; 0.24–0.26
Immediate postextraction implants	144; 0.20 (±0.14); 0.15; 0.18–0.22	144; 0.23 (±0.12); 0.24; 0.22–0.24
Implants in healed ridges	69; 0.23 (±0.17); 0.2; 0.19–0.27	69; 0.28 (±0.09); 0.29; 0.26–0.3

n ^∗ = number of the implants examined.