Clarkson J et al. Examining the impact of oral hygiene advice and/or scale and polish on periodontal disease: the IQuaD cluster factorial randomised controlled trial. British Dent J. 2021. 230: 2229-235.
Results suggest scale and polish treatments and delivering brief personalized oral hygiene advice provide no clinical benefit and are therefore an inefficient approach to improving dental health (38% of sites were bleeding whatever intervention was received). However, the general population value both interventions.