Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

70 questions · 92 findings · 29 reviews · Dental caries

No studies found 1 · 1.1%GRADE not reported 61 · 66.3%Very low 21 · 22.8%Low 6 · 6.5%Moderate 3 · 3.3%High 0 · 0%

Interdental brushing plus toothbrushing vs Toothbrushing alone

Plaque · Adults, 16 years and older (dentate)

Interdental brushing plus toothbrushing may leads to lower plaque compared with toothbrushing alone (low certainty).

2 findings from 2 reviews · compare the 2 reviews

Interdental brushing plus toothbrushing vs Flossing plus toothbrushing

Plaque · Adults, 16 years and older (dentate)

It is very uncertain whether interdental brushing plus toothbrushing changes plaque compared with flossing plus toothbrushing (very low certainty).

3 findings from 2 reviews · compare the 2 reviews

Rubber/elastomeric cleaning stick plus toothbrushing vs Flossing plus toothbrushing

Plaque · Adults, 16 years and older (dentate)

It is very uncertain whether rubber/elastomeric cleaning stick plus toothbrushing changes plaque compared with flossing plus toothbrushing (very low certainty).

1 finding from 1 review

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

Plaque · Adults, 16 years and older (dentate)

It is very uncertain whether rubber/elastomeric cleaning stick plus toothbrushing changes plaque compared with interdental brushing plus toothbrushing (very low certainty).

1 finding from 1 review

Rubber/elastomeric cleaning stick plus toothbrushing vs Toothbrushing alone

Plaque · Adults, 16 years and older (dentate)

It is very uncertain whether rubber/elastomeric cleaning stick plus toothbrushing changes plaque compared with toothbrushing alone (very low certainty).

1 finding from 1 review

Chlorhexidine mouthwash vs placebo

Plaque index (PI) / oral hygiene · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

Chlorhexidine mouthwash reduced Plaque Index versus placebo, but certainty is very low.

1 finding from 1 review

Gamified mobile health app vs Conventional method

Plaque control · Children or adolescents

One RCT reported superior plaque control with a gamified mobile health app versus a conventional method; no effect estimate or GRADE assessment was reported.

1 finding from 1 review

Unilateral cleft lip and palate (UCLP) vs Bilateral cleft lip and palate (BCLP)

Plaque · Patients with cleft lip and palate (CLP)

Plaque index does not differ significantly between unilateral and bilateral cleft lip and palate (MD -0.13, 95% CI -0.38 to 0.12; ungraded).

1 finding from 1 review

Cleft lip and/or palate (CL/P) vs Healthy controls without cleft

Plaque · Individuals assessed for periodontal health (mainly children and adolescents, age >2 years)

Persons with orofacial cleft have a higher plaque index than healthy controls (MD 0.29, 95% CI 0.24 to 0.34; low certainty).

1 finding from 1 review

Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances

Plaque · Adolescents/teenagers undergoing orthodontic treatment

A single study reported a lower full-mouth plaque score with aligners versus fixed appliances in adolescents at 12 months (MD -43.48, 95% CI -47.65 to -39.31; ungraded).

3 findings from 1 review

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) vs Metal-ceramic cantilevered FDPs

Plaque · Adults (18 years or older) needing replacement of one premolar or incisor with a cantilevered fixed dental prosthesis

Metal-free cantilevered FDPs (feldspathic-veneered zirconia) showed no clear difference in plaque index (PI) compared with metal-ceramic cantilevered FDPs; GRADE not reported.

1 finding from 1 review