Table 1. Demographic and clinical characteristics of all subjects.

Characteristic	Healthy subjects (n=10)	Peri-implant mucositis patients (n=8)	Peri-implantitis patients (n=6)
Male/female	3/7	6/2	3/3
Age (years ± s.d.)	42.6 ± 3.6	46.0 ± 3.5	48.2 ± 7.8
Years of functional loading (years ± s.d.)	3.9 ± 0.7	4.2 ± 0.7	4.5 ± 1.4
Plaque index (mean ± s.d.)	1.3 ± 0.5	1.4 ± 0.5	1.16 ± 0.4
Peri-implant probing depth (mm ± s.d.)	2.0 ± 0.9	2.0 ± 1.6	4.0 ± 2.7
Bone loss (mm ± s.d.)	0	0	2 ± 3.6
Bleeding on probing (+/–)	0/10	5/3	6/0