Evaluation of Anti Bacterial Effect of Titanium Dioxide Nanoparticles on Baseplates of Twin Block

Background The objective of this study was to evaluate the antibacterial effect of Titanium dioxide nanoparticles incorporated into the acrylic baseplates of maxillary part of twin block appliances in orthodontic patients during the treatment period. Material and methods Twenty-six patients were selected randomly and divided into two groups(n=13). Test group patients were used orthodontic functional appliances containing Titanium dioxide nanoparticles in acrylic baseplates. Control group patients were used orthodontic functional appliances without Titanium dioxide nanoparticles in acrylic baseplates. Swap samples were taken from palatal gingiva facing fitting surface of acrylic component of maxillary part of twin block appliance for each patient at five times intervals (base line sample, after one, two, four, and six months) then cultured in blood agar plates to calculate bacterial colony count.