Table 1.

Patients data.

	Frequency
Gender (PRP)
Male	12
Female	60
Age at diagnosis
Minimum	37
Maximum	81
Mean	59
Primary tumor (PRP)
Prostate	9
Breast	54
Lung	8
Multiple myeloma	1
Bisphosphonate
Pamidronate	22
Alendronate	2
Zoledronic acid	48
Cause
Tooth extraction	47
Prosthetic/dental trauma	25
Periodontal disease	15
ONJ status at diagnosis
Stage 0	5
Stage I	11
Stage II	41
Stage III	15