Table 1.
Clinical characteristics of the study subjects.
| Peri-implantitis | Periodontitis | P value (two-tailed paired t test) | ||
|---|---|---|---|---|
| Age | 67.2 ± 7.8 a | – | ||
| Gender | 12 males, 9 females | – | ||
| Sample sites | Maxilla | 11 | 10 | 0.33 |
| Mandible | 10 | 11 | 0.33 | |
| Anterior | 3 | 6 | 0.08 | |
| Posterior | 18 | 15 | 0.08 | |
| PD (mm) | 7.7 ± 2.4 a | 6.5 ± 2.3 a | 0.11 | |
| Number of sites with BOP | 21 | 21 | – | |
| Number of sites with SUP | 3 | 0 | 0.08 | |
| RBL (%) | 33.2 ± 13.6 a | 32.9 ± 13.3 a | 0.94 | |
| Time in function (year) | 7.5 ± 4.9 a | – | – | |
a
Values represent the mean ± standard deviation. PD, probing depth; BOP, bleeding on probing; SUP, suppuration; RBL, radiographic bone loss.