Table 1. Characteristics of included systematic reviews.

Systematic review	Field	Number of RCTs*	Interventions	Outcomes evaluated
Esposito et al. 2013	Implant dentistry	n = 26	Root-form osseointegrated dental implants, having a follow-up of 4 months to 1 year, comparing the same implant type immediately, early or conventionally loaded, occlusally or non-occlusally loaded, or progressively loaded or not	Prosthesis and implant failures and radiographic marginal bone level changes
Riley and Lamont 2013	Periodontology	n = 30	Assessment of the effects of triclosan/copolymer containing fluoride toothpastes, compared with fluoride toothpastes, for the long-term control of caries, plaque and gingivitis in children and adults	Primary outcomes (plaque levels measured using any appropriate scale, gingival health measured using any appropriate scale); Secondary outcomes (incidence of periodontitis, caries: a) new incidence, and b) caries increment–change in decayed, missing and filled surfaces (DMFS/dmfs) index, calculus measured using any appropriate scale, adverse effects (e.g. taste disturbance, staining, allergic reaction, etc.), participant-centred outcomes: a) participant-assessed quality of life scores, and b) participant satisfaction with product.
Yaacob et al. 2014	Periodontology	n = 51	Unsupervised powered toothbrushing versus manual toothbrushing for oral health in children and adults	Primary outcomes (quantified levels of plaque or gingivitis or both), Secondary outcome measures sought were levels of calculus and staining; dependability and cost of the brush used, including mechanical deterioration; and adverse effects such as hard or soft tissue injury and damage to orthodontic appliances and prostheses.

*RCTs included in the meta-analyses only