Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

156 questions · 165 findings · 21 reviews · Orthodontics

No studies found 34 · 20.6%GRADE not reported 77 · 46.7%Very low 39 · 23.6%Low 13 · 7.9%Moderate 2 · 1.2%High 0 · 0%

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Decay (decalcification) associated with or around the etching field · Children and adults with fixed orthodontic brackets bonded to incisors, canines and premolars
1 finding from 1 review
  • Decay (decalcification) associated with or around the etching field: Only one study (Ghiz 2009) assessed this outcome but data were reported at the tooth level rather than at the participant level and therefore was not…
    1 study · 25 participants
    GRADE not reported

Fluoride mouthrinse (0.05-0.32% sodium fluoride or amine fluoride) added to daily fluoride toothpaste vs Control: fluoride toothpaste alone, placebo mouthrinse + toothpaste, or non-fluoride (chlorhexidine) mouthrinse + toothpaste

Incidence of initial caries around brackets, aesthetic-zone teeth only · Orthodontic patients (any age) undergoing orthodontic treatment (mostly fixed appliances)

When only aesthetic-zone teeth (incisors and canines) were considered, two studies reported a significant reduction in initial caries incidence favoring fluoride mouthrinse (ungraded, narrative; no pooled estimate).

1 finding from 1 review

Fluoride mouthrinse (0.05-0.32% sodium fluoride or amine fluoride) added to daily fluoride toothpaste vs Control: fluoride toothpaste alone, placebo mouthrinse + toothpaste, or non-fluoride (chlorhexidine) mouthrinse + toothpaste

Incidence of proximal (interdental) caries lesions from bitewing radiographs · Orthodontic patients (any age) undergoing orthodontic treatment (mostly fixed appliances)

Only one included study assessed proximal caries incidence from bitewing radiographs; it was not included in the meta-analysis and no pooled estimate is available (ungraded).

1 finding from 1 review

Fluoride mouthrinse (0.05-0.32% sodium fluoride or amine fluoride) added to daily fluoride toothpaste vs Control: fluoride toothpaste alone, placebo mouthrinse + toothpaste, or non-fluoride (chlorhexidine) mouthrinse + toothpaste

Incidence of initial enamel caries / white spot lesions adjacent to bracket base (subject level, dichotomized) · Orthodontic patients (any age) undergoing orthodontic treatment (mostly fixed appliances)

Adding a fluoride mouthrinse to daily fluoride toothpaste produced a small reduction in the incidence of initial caries/white spot lesions adjacent to brackets (pooled risk difference -0.07, 95% CI -0.14 to -0.01; 5 studies, 491 subjects), but the authors judged the overall evidence inconclusive (ungraded).

1 finding from 1 review

Fluoride mouthrinse (0.05-0.32% sodium fluoride or amine fluoride) added to daily fluoride toothpaste vs Control: fluoride toothpaste alone, placebo mouthrinse + toothpaste, or non-fluoride (chlorhexidine) mouthrinse + toothpaste

Side effects or other adverse events · Orthodontic patients (any age) undergoing orthodontic treatment (mostly fixed appliances)

No adverse effects were reported in any of the seven included studies (ungraded).

1 finding from 1 review

Fluoride varnish vs Placebo varnish, resin sealant, or standard care (oral hygiene instructions)

White spot lesion clinical score (mean values), subject level · Healthy adolescents and adults undergoing orthodontic treatment with fixed multi-bracket appliances

In a pooled analysis of two placebo-controlled trials, fluoride varnish also reduced white spot lesion clinical scores (pooled SMD -0.44, 95% CI -0.64 to -0.24); this secondary outcome was not separately GRADE-rated.

1 finding from 1 review

Intervention not reported

Initiation of white spot lesions (WSL), visual-tactile assessment

The intervention showed no clear difference in initiation of white spot lesions (WSL), visual-tactile assessment; GRADE not reported.

1 finding from 1 review

Intervention not reported

Initiation of white spot lesions (WSL), visual-tactile assessment

The intervention showed no clear difference in initiation of white spot lesions (WSL), visual-tactile assessment; GRADE not reported.

1 finding from 1 review

Intervention not reported

Initiation of white spot lesions (WSL), visual-tactile assessment

The intervention showed no clear difference in initiation of white spot lesions (WSL), visual-tactile assessment; GRADE not reported.

1 finding from 1 review

Intervention not reported

Initiation of white spot lesions (WSL), visual-tactile assessment

The intervention showed no clear difference in initiation of white spot lesions (WSL), visual-tactile assessment; GRADE not reported.

1 finding from 1 review

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

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

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

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

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

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

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

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

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

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

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

Gingival bleeding (various bleeding indices) · 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 gingival bleeding index (mean change from baseline) compared with 1400/250 ppm F (NaF) toothpaste + mouthrinse, daily (very 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

White spot lesion index (mean change from baseline) · 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 white spot lesion index (mean change from baseline) compared with 1400/250 ppm F (NaF) toothpaste + mouthrinse, daily (very low certainty).

1 finding from 1 review

Fluoride varnish vs Non-fluoride (placebo) varnish

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

Professionally-applied fluoride varnish (7700 or 10,000 ppm F),… showed no clear difference in number of participants with new demineralised lesions (DLs) compared with non-fluoride (placebo) varnish (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

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

Number of participants with more severe DLs (score 3 or 4 versus 1 or 2) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

Professionally-applied fluoride varnish (7700 ppm F ammonium… may leads to lower number of participants with more severe DLs (score 3 or 4 versus 1… compared with non-fluoride (placebo) varnish (low certainty).

1 finding from 1 review