Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,556 questions · 10,375 findings · 429 reviews · All outcomes

No studies found 1,344 · 13%GRADE not reported 6,832 · 65.9%Very low 1,228 · 11.8%Low 613 · 5.9%Moderate 290 · 2.8%High 68 · 0.7%

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Coating material (bonding material or sealant) WITH fluoride release vs Coating material WITHOUT fluoride release

Initiation of white spot lesions (WSL), visual-tactile assessment · Patients of any age (11-40 years) receiving comprehensive/fixed orthodontic treatment with fixed appliances

Fluoride-releasing coating materials do not appear to reduce WSL initiation more than non-fluoride coatings (RR 0.84, not significant); certainty of evidence is very low.

1 finding from 1 review

Light-based detection and/or oral spectroscopy (e.g. ViziLite, VELscope, Microlux DL, Identafi 3000) vs Surgical or punch biopsy with histological assessment

Sensitivity · Adults (aged 16 years or over) presenting to primary or secondary care with clinically evident suspicious or innocuous oral lesions
1 finding from 1 review

Schwarz appliance vs No active treatment (control)

Lower incisors to mandible (position, mm) at 9 months · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Schwarz appliance led to higher lower incisors to mandible (position, mm) at 9 months compared with no active treatment (control); GRADE not reported.

1 finding from 1 review

Bleaching before resin infiltration (bleaching + infiltration) vs Resin infiltration alone

Masking effect (esthetic improvement) · Patients with dental fluorosis

Bleaching before resin infiltration did not improve masking of fluorosis compared with infiltration alone (MD -0.30, 95% CI -0.98 to 0.39; moderate certainty).

1 finding from 1 review

Copper nickel-titanium archwire vs Nickel-titanium archwire

Time to alignment · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Copper nickel-titanium archwire showed no clear difference in time to alignment (days) compared with nickel-titanium archwire; GRADE not reported.

1 finding from 1 review

Lower family socioeconomic status / income vs Higher socioeconomic position

Dental caries · Healthy children and adolescents in the United Arab Emirates

Evidence on socioeconomic status/income and caries was inconsistent: some studies linked lower income to higher caries while others found no association (narrative synthesis; not GRADE-rated).

1 finding from 1 review

Active self-ligating brackets vs Passive self-ligating brackets

Amount of crowding (upper anterior crowding) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
1 finding from 1 review
  • Orthodontic treatment for crowded teeth in children 2021 · Cochrane All outcomes
    baseline
    Only baseline upper anterior crowding reported (Pandis 2010a, n=70); evidence of baseline imbalance between groups (P=0.04); no post-treatment between-group crowding estimate reported.
    1 study
    GRADE not reported

Fibre-optic transillumination (FOTI) vs Histological validation (in vitro) or direct visual examination after tooth separation / bioptical cavity preparation (in vivo)

detection of proximal caries · Permanent posterior teeth, proximal surfaces (in vitro extracted teeth and in vivo patients)

For fibre-optic transillumination (FOTI), studies were identified (in vitro N=4, in vivo N=3) but none had sufficiently low risk of bias and adequate reporting to be pooled; no meta-analytic estimate could be derived.

1 finding from 1 review

Sealing using sealant materials vs no treatment

Lesion progression · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious lesions conventionally…
1 finding from 1 review

Double primary (canine and first molar) tooth extraction vs Single primary (canine) tooth extraction

Time taken for the canine to erupt into the mouth · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)

The review found no eligible studies for this question.

1 finding from 1 review

Systemic antibiotic prophylaxis (any regimen; topical therapy excluded) administered before and/or after tooth extraction vs placebo

Adverse effects · People undergoing tooth extraction (21 of 23 trials: healthy patients undergoing impacted third molar extraction; 1 routine intra-alveolar…

It is very uncertain whether systemic antibiotic prophylaxis (any regimen; topical therapy… changes adverse effects compared with placebo (very low certainty).

1 finding from 1 review

ARP with alloplast vs ARP with xenograft

Implant failure rate · Adults aged 18 years or older, in good general health (including well-controlled systemic disease), requiring extraction of one or more…

It is very uncertain whether ARP with alloplast changes implant failure rate compared with ARP with xenograft (very low certainty).

1 finding from 1 review

Systemic sclerosis (SSc / scleroderma) vs SSc-free individuals (controls)

Percentage of bleeding on probing (BOP) · Adults (general and hospital populations assessed in case-control studies)

No statistically significant difference in bleeding on probing between SSc patients and controls (SMD 1.05, CI includes 0); certainty ungraded.

1 finding from 1 review

Transillumination and optical coherence tomography devices (all illumination devices combined: NIR, OCT, and FOTI/DIFOTI) vs Reference standard (histology, excavation, radiographs/microCT, or tooth separation)

Sensitivity for detection and diagnosis of early (enamel) caries · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted teeth of children or…
1 finding from 1 review