This review of the impact of fixed appliance orthodontic treatment on clinical attachment levels included 9 small prospective studies finding no no clinically relevant detrimental effect. However the overall level of evidence is low to very low.
20 RCTs involving a total of 720 patients were included in this review of antiseptic oral sprays in the control of dental plaque and gingivitis. The findings suggest then can reduce plaque levels in the short term.
This review of powered toothbrushes for periodontal health in orthodontic patients included 9 small RCTs. A small statistically significant benefit was noted in short term use.