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. 2021 Oct 17;10(20):4762. doi: 10.3390/jcm10204762

Table 2.

Clinical characteristics of lesions in the MRONJ group.

MRONJ Staging (AAOMS Classification) MRONJ Group N = 75 (%)
0 3 (2.25)
I 11 (8.25)
II 48 (36)
III 13 (9.75)
Presence of clinical signs of inflammation/suppuration at diagnosis stage 62 (82.7)
MRONJ staging (SIPMO classification)
Ia 7 (5.25)
Ib 23 (17.25)
IIa 4 (3)
IIb 28 (21)
IIIa 2 (1.5)
IIIb 11 (8.25)
Anatomic location
Mandible 52 (69.3)
Upper maxilla 16 (21.3)
Both jaws 7 (9.3)
Trigger
Tooth extraction 16 (21.3)
Peri-implantitis 1 (1.3)
Soft tissue injuries due dental prosthesis 4 (5.3)
Unidentified trigger 54 (72)

Legend: MRONJ = medication-related osteonecrosis of the jaws; AAOMS = American Association of Oral and Maxillofacial Surgeons; SIPMO: Italian Society of Oral Medicine and Oral Pathology.