Table 6.
Modified plaque index (mPI) and modified sulcus bleeding index (mBI).
| Score | Occurrence rate (%) | p value | |||
|---|---|---|---|---|---|
| 6-12 months | 12-18 months | 18-24 months | |||
| mPI | 0 | 83.3 | 85.7 | 100.0 | 0.78 |
| 1 | 13.9 | 14.3 | — | ||
| 2 | 2.7 | — | — | ||
| 3 | — | — | — | ||
|
| |||||
| mBI | 0 | 72.2 | 81 | 100.0 | 0.60 |
| 1 | 16.7 | 14.3 | — | ||
| 2 | 11.1 | 4.8 | — | ||
| 3 | — | — | — | ||
mPI = modified plaque index; score 0: no detection of plaque; score 1: plaque only recognized by running a probe across the smooth marginal surface of the implant; score 2: plaque can be seen by the naked eye; score 3: abundance of soft matter. mBI = modified sulcus bleeding index; score 0: no bleeding when a periodontal probe is passed along the gingival margin adjacent to the implant; score 1: isolated bleeding spots visible; score 2: blood forms a confluent red line on the margin; score 3: heavy or profuse bleeding.