Cytokine Levels and Human Herpesviruses in Saliva from Clinical Periodontal Healthy Subjects with Peri-Implantitis: A Case-Control Study

Table 1

Mean ± SD of clinical characteristics of the subjects in both groups.

Clinical variables	Healthy	Peri-implantitis
subjects	21	21
Age (years)^ns	49.0 ± 12.2	52.6 ± 12.1	0.3778
Gender (m : f)^ns	8 : 13	3 : 18
Probing depth (mm)	3.27 ± 0.99	5.06 ± 2.28	0.0050
Clinical attachment level (mm)	0.15 ± 0.64	5.08 ± 2.03	<0.0001
% sites with:
Plaque^ns	43.1 ± 43.7	31.7 ± 40.1	0.5058
Gingival bleeding	26.5 ± 35.3	53.9 ± 36.1	0.0227
Bleeding on probing	50.0 ± 36.4	80.8 ± 30.8	0.0089
Suppuration	0 ± 0	10.7 ± 0.1	<0.01

Mann–Whitney and chi-square test. ns: nonsignificant. Significant.