disinfecting removable appliances by evaluating the antimicrobial efficacy of three natural
extracts. Materials and methods Fifty patients with removable orthodontic appliances were
selected and divided into five groups [chlorhexidine 0.2%(positive control), extracts of neem,
katha, cinnamon, and normal saline (negative control)] with 10 samples each. Saliva sample
from the appliance was collected using a sterile cotton swab and cultured. Agar diffusion …