Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,087 questions · 2,360 findings · 390 reviews

No studies found 224 · 9.5%GRADE not reported 603 · 25.6%Very low 555 · 23.5%Low 548 · 23.2%Moderate 312 · 13.2%High 118 · 5%

Slow-release fluoride device (fluoride glass beads) vs Fluoride mouthrinse

Number of participants with new demineralised lesions (DLs) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

It is very uncertain whether intraoral fluoride-releasing glass bead device attached to the brace changes number of participants with new demineralised lesions (DLs) compared with 250 ppm F (daily) fluoride mouthrinse (very low certainty).

1 finding from 1 review

Patient-used 250 ppm F mouthrinse (100 ppm amine F/150 ppm NaF), daily vs 0 ppm F placebo mouthrinse, daily

Number of participants with new demineralised lesions (DLs) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

It is very uncertain whether patient-used 250 ppm F mouthrinse (100 ppm amine F/150 ppm NaF), daily changes number of participants with new demineralised lesions (DLs) compared with 0 ppm F placebo mouthrinse, daily (very low certainty).

1 finding from 1 review

Patient-used 5000 ppm F toothpaste, daily vs 1450 to 1500 ppm F toothpaste

Adverse effects · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

The review found no eligible studies for this question.

1 finding from 1 review

Patient-used 5000 ppm F toothpaste, daily vs 1450 to 1500 ppm F toothpaste

Number of participants with new demineralised lesions (DLs) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

Patient-used 5000 ppm F toothpaste, daily throughout treatment showed no clear difference in number of participants with new demineralised lesions (DLs) compared with 1450 ppm F (conventional) toothpaste, daily (low certainty).

1 finding from 1 review

Professionally-applied 12,300 ppm F APF foam, every 2 months vs 0 ppm F placebo foam

Number of participants with more severe DLs (severity of DLs) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

The review found no eligible studies for this question.

1 finding from 1 review

12,500 ppm F (NaF/olaflur/dectaflur) amine fluoride gel vs Placebo gel

Adverse effects · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)
1 finding from 1 review

Professionally-applied 12,300 ppm F APF foam, every 2 months vs 0 ppm F placebo foam

Number of participants with new demineralised lesions (DLs) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

Professionally-applied 12,300 ppm F APF foam, every 2 months may leads to lower number of participants with new demineralised lesions (DLs) compared with 0 ppm F placebo foam (low certainty).

1 finding from 1 review

1400/250 ppm F (amine F/SnF2) toothpaste + mouthrinse, daily vs 1400/250 ppm F (NaF) toothpaste + mouthrinse, daily

Plaque index (PI) / oral hygiene · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

It is very uncertain whether 1400/250 ppm F (amine F/SnF2) toothpaste + mouthrinse, daily changes visible plaque index (mean change from baseline) compared with 1400/250 ppm F (NaF) toothpaste + mouthrinse, daily (very low certainty).

1 finding from 1 review

Professionally-applied 12,300 ppm F APF foam, every 2 months vs 0 ppm F placebo foam

Adverse effects · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

The review found no eligible studies for this question.

1 finding from 1 review

Fluoride varnish vs Non-fluoride (placebo) varnish

Adverse effects · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)
1 finding from 1 review

Bilateral extraction of compromised mandibular first permanent molars vs Age- and gender-matched non-extraction controls

Lower incisor inclination (lingual tipping and retrusion) · Children (approximately 11 years or older) with compromised mandibular first permanent molars

Bilateral lower first permanent molar extraction was associated with lingual tipping and retrusion of the lower incisors in one case-control study; ungraded.

1 finding from 1 review

Extraction of a maxillary first permanent molar vs Extraction of a mandibular first permanent molar

Spontaneous space closure · Children aged 5 to 15 years undergoing first permanent molar extraction

Spontaneous post-extraction space closure did not differ significantly between the maxilla and mandible (pooled OR 2.06, 95% CI 0.46 to 9.28; 3 studies; I2 = 72%); ungraded.

1 finding from 1 review

Bilateral extraction of compromised mandibular first permanent molars vs Age- and gender-matched non-extraction controls

Skeletal development (occlusal plane rotation, facial height) · Children (approximately 11 years or older) with compromised mandibular first permanent molars

Bilateral lower first permanent molar extraction was associated with counter-clockwise rotation of the occlusal plane and a mild decrease in lower anterior face height in one case-control study; ungraded.

1 finding from 1 review

Intervention not reported

Death or a poor outcome (median 3‐month · adults with acute stroke

The intervention showed no clear difference in death or a poor outcome (median 3‐month (moderate certainty).

1 finding from 1 review

Intervention not reported

Death (median 3‐month · adults with acute stroke

The intervention showed no clear difference in death (median 3‐month (moderate certainty).

1 finding from 1 review