The classification of patients according to use of bisphosphonate and existence of osteonecrosis of jaw (n=135)
Taking BPs (Group 1)Not taking BPs (Group 2)
Histology revealed ONJ (Group A)Group 1A (n=32)1Group 2A (n=32)
Histology did not reveal ONJ (Group B)Group 1B (n=27)Group 2B (n=44)

(BPs: bisphosphonates, ONJ: osteonecrosis of the jaw)

1Bisphosphonate-related osteonecrosis of the jaw.