What do systematic reviews say?

Metal-free implant abutments (zirconia) vs Metal implant abutments (titanium)

Metal-free implant abutments (zirconia) showed no clear difference in implant probing pocket depth (PPD) compared with metal implant abutments (titanium); GRADE not reported.

• Metal‐free materials for fixed prosthodontic restorations 2017 · Cochrane All outcomes

  12 months
  MD -0.22 [-0.60, 0.16]
  2 studies · 47 participants
  GRADE not reported

Wooden cleaning stick plus toothbrushing vs Flossing plus toothbrushing

The review found no eligible studies for this question.

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  No included study assessed periodontitis.
  0 studies
  No studies found

Oral irrigation plus toothbrushing vs Flossing plus toothbrushing

The review found no eligible studies for this question.

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  No included study assessed periodontitis.
  0 studies
  No studies found

Oral irrigation plus toothbrushing vs Toothbrushing alone

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  Periodontitis measured in one study but useable data not provided (Walsh 1989 reported proportion of sites with >4 mm pocket depth at 3 months but not mean PD; attachment loss measured but no data).
  1 study
  GRADE not reported

Rubber/elastomeric cleaning stick plus toothbrushing vs Flossing plus toothbrushing

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  One study measured periodontitis but the data were not usable (Smith 1988 measured PPD but data unusable).
  1 study
  GRADE not reported

Rubber/elastomeric cleaning stick plus toothbrushing vs Toothbrushing alone

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  One study measured probing pocket depth but no data were reported (Graziani 2017 mentioned PPD as outcome but no data).
  1 study
  GRADE not reported

Interdental brushing plus toothbrushing vs Toothbrushing alone

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  One study measured probing pocket depth but no data were reported (Graziani 2017).
  1 study
  GRADE not reported

Rubber/elastomeric cleaning stick plus toothbrushing vs Interdental brushing plus toothbrushing

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  Two studies measured periodontitis but data not presented or usable (Smith 1988 PPD unusable; Graziani 2017 measured PPD but no data).
  2 studies
  GRADE not reported

Interdental brushing plus toothbrushing vs Flossing plus toothbrushing

Interdental brushing plus toothbrushing showed no clear difference in periodontitis (probing pocket depth) compared with flossing plus toothbrushing (low certainty).

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes

  4 to 6 weeks
  MD -0.06 [-0.27, 0.16]
  3 studies · 107 participants
  Low

Wooden cleaning stick plus toothbrushing vs Toothbrushing alone

The review found no eligible studies for this question.

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  No included study assessed periodontitis as an outcome.
  0 studies
  No studies found

Flossing plus toothbrushing vs Toothbrushing alone

• Home use of interdental cleaning devices, in addition to toothbrushing, for preventing and controlling periodontal… 2019 · Cochrane All outcomes
  One study measured probing pocket depth but no data were reported (Graziani 2017).
  1 study
  GRADE not reported