Table 2 Bone (B) and soft tissue (S) classification, and stage of osteonecrosis of the mandible
Variable | Stage (n) |
|---|---|
Bony destruction: | |
BO (no bony exposure, only imaging) | 0 (6) |
B1 (exposed bone, area < 2.0 cm) | B0S0 |
B2 (exposed bone, ≥ 2 cm) | I (62) |
B3 (pathological fracture) | B1S0,B1S1,B1S2 |
Soft tissue injury: | II (44) |
SO (no soft tissue damage) | B2S0,B2S1,B2S2 |
S1 (mucosal or skin damage) | III (12) |
S2 (mucosal and skin damage) | B3S0,B3S1,B3S2 |