Table 1.
Early | PD ≥4 mm (bleeding and/or suppuration on probing)a
Bone loss <25 % of the implant lengthb |
Moderate | PD ≥6 mm (bleeding and/or suppuration on probing)a
Bone loss <25–50 % of the implant lengthb |
Severe | PD ≥8 mm (bleeding and/or suppuration on probing)a
Bone loss >50 % of the implant lengthb |
aNoted one two or more aspects of the implants
bMeasured on radiographs from time of definitive prosthesis loading to current radiograph. If not available, the earliest available radiograph following loading should be used