Which orthodontic appliance is best for oral hygiene by Aditya Chhibber et al

This study discusses which appliances provide the best oral hygiene levels among Clear aligners, self ligated brackets and traditional fixed orthodontic appliances. It is a randomized clinical trial which is registered at ClinicialTrials.gov.  There were 71 participants and concluded that there was no evidence of differences in oral hygiene levels among clear retainers, self-ligating brackets and conventional brackets after 18 months of  orthodontic treatment.