Histological features Group
Zoledronic acid Clodronate Control
Mean SD Median Mean SD Median Mean SD Median
Microbial colonies 39.8 48.7 26.8 42.7 39.6 34.3 25.7 57.2 5.25
Root fragments 120.4 142.9 92.8 88.5 61 110.5 51.3 68.7 20.5

Kruskall-Wallis (P > 0.05).
SD = standard deviation.