Table 3 Examination data after surgery based on peri-implantitis stage
Surgical group | Original group of patients and implants treated with peri-implantitis surgery | Patient file sample included in protocol analysis |
|---|---|---|
Patients | 101 | 89 |
Implants | 266 | 227 |
 Peri-implantitis stage before surgery |  |  |
  1 | 88 | 79 |
   Resective surgery (%) | 52 (59.1) | 47 (59.5) |
   Regenerative surgery (%) | 36 (40.9) | 32 (40.5) |
  2 | 89 | 70 |
   Resective surgery (%) | 46 (51.7) | 35 (50) |
   Regenerative surgery (%) | 43 (48.3) | 35 (50) |
  3 | 89 | 78 |
   Resective surgery (%) | 26 (29.2) | 20 (25.6) |
   Regenerative surgery (%) | 63 (70.8) | 58 (74.4) |
 Resective surgery, Total (%) | 124 (46.6) | 102 (44.9) |
 Regenerative surgery, Total (%) | 142 (53.4) | 125 (55.1) |
Number of implants with peri-implantitis per patient, mean ± SD (range) | 2.7 ± 1.8 (1–13) | |
Time (years) from implant placement to peri-implantitis diagnosis, mean ± SD (range) | 4.0 ± 2.9 (0.2–11.5) | |
Function time (years) before peri-implantitis diagnosis, mean ± SD (range) | 3.5 ± 2.9 (0–11.0) | |
Function time (years) before surgery, mean ± SD (range) | 5.5 ± 3.3 (0.5–15.7) | |
Time (years) from peri-implantitis diagnosis to surgery, mean ± SD (range) | 1.3 ± 1.7 (0–11.2) | |