Background
Methods
Selection of patients
Implant | Number |
---|---|
Replace select ™ | 44 |
Novel Replace ® | 31 |
OsseoSpeed ™ | 25 |
OSSEOTITE ® XP | 18 |
Brånemark system® Mk III | 7 |
Steri-Oss ® implant system | 5 |
Total | 130 |
History of periodontitis before implant treatment
Dental history
Diagnosis of peri-implantitis
Maintenance examinations
Evaluation of plaque adhesion
Probing pocket depth around implants
Bleeding on probing of peri-implant mucosa
Statistical analysis
Results
Patients
H group mean ± SD, or n (median) | HP group mean ± SD, or n (median) | Significant difference between H and HP group | |
---|---|---|---|
Age
| 56.0 ± 11.8 (57.9) | 67.2 ± 7.7 (66.9) | ** |
Number of teeth (at the first visit) (at the beginning of implant treatment) | 25.3 ± 3.0 (26.5) | 25.2 ± 2.9 (26.0) | n.s. |
23.9 ± 3.6 (25.0) | 21.6 ± 4.7 (23.0) | * | |
Number of extracted teeth
| 1.6 ± 1.2 (1.0) | 4.1 ± 4.0 (2.0) | ** |
Maintenance period
| 4 years 3 months (5 years 8 months) | 7 years 4 months (8 years 4 months) | ** |
Prevalence of peri-implantitis, history of periodontitis severity
Diagnosis in HP group (37 patients, 91 implants) Localized: ≤ 30% of site involved, generalized: > 30% of site involved | Numbers of peri-implantitis and prevalence in diagnosis n = 14, 15.4% of HP group | |
---|---|---|
Diagnosis of chronic periodontitis | Implants | Peri-implantitis implants |
Generalized moderate (22 patients) | 53 | 3 (5.7 %) |
Generalized moderate + Localized severe (11 patients) | 23 | 3 (13.0 %) |
Generalized severe (4 patients) | 15 | 8 (53.3%) |
Clinical parameters
Clinical parameters | H group (n = 39) mean ± SD/median | HP group (n = 91) mean ± SD/median | Significance difference between H and HP group |
---|---|---|---|
mPI | 0.18 ± 0.23/0.25 | 0.23 ± 0.33/0.25 | n.s. |
PPD | 2.87 ± 0.48/2.83 | 3.33 ± 1.07/3.00 | ** |
BoP | 0.30 ± 0.28/0.17 | 0.28 ± 0.29/0.17 | n.s. |
Modified plaque index
Probing pocket depth
Bleeding on probing
Correlations between PPD and characteristics of the study population
Characteristics | H group correlation (R
s
) | HP group correlation (R
s
) |
---|---|---|
Age
| 0.040 n.s. | 0.209*
|
Number of teeth (at the beginning of implant treatment) | 0.027 n.s. | − 0.355**
|
Number of extracted teeth
| 0.369*
| 0.284**
|
Maintenance period (month)
| 0.193 n.s. | 0.234* |
Comparison of clinical parameters between the H and HP groups
Parameters | H group correlation (R
s
) | HP group correlation (R
s
) |
---|---|---|
PPD-mPI | 0.182 n.s. | 0.228*
|
PPD-BoP | 0.401*
| 0.241*
|