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Table 1 Gender, age, administration period, DM, and MRONJ staging of each group

From: Evaluation of mandibular cortical bone ratio on computed tomography images in patients taking bisphosphonates

  Group A
(n = 33)
Group B
(n = 30)
Group C
(n = 32)
Gender Male 3 2 9
Female 30 28 23
DM Presence 8 4 8
Absence 25 26 24
Age Years (mean ± SD) 74.5 ± 6.0 74.3 ± 5.8 74.8 ± 5.1
65 ≤ years < 75 (n) 21 15 17
75 ≤ years < 85 (n) 11 14 15
85 ≤ years (n) 1 1 0
Administration period (n = 49) Years (mean ± SD) 6.3 ± 5.3 4.8 ± 4.4
< 4 years (n) 10 12
≥ 4 years (n) 15 12
MRONJ Staging Stage 1 1
Stage 2 27
Stage 3 5
  1. A: patients with MRONJ
  2. B: patients taking BP without MRONJ
  3. C: controls