What do systematic reviews say?

1,333 questions · 1,344 findings · 217 reviews · All outcomes

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No studies found 1,344 · 100%GRADE not reported 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Low‐level laser therapy vs Conventional orthodontic appliance treatment

Overall treatment time wearing orthodontic appliances · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment

The review found no eligible studies for this question.

1 finding from 1 review

Non‐surgical adjunctive interventions for accelerating tooth movement in patients undergoing orthodontic treatment 2023 · Cochrane All outcomes
No study reported on the influence of LLLT on the total overall orthodontic treatment duration.
Studies not reported
No studies found

Light-emitting diode (LED) photobiomodulation vs Conventional orthodontic appliance treatment

Orthodontic tooth movement (OTM) during alignment stage · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment

The review found no eligible studies for this question.

1 finding from 1 review

Non‐surgical adjunctive interventions for accelerating tooth movement in patients undergoing orthodontic treatment 2023 · Cochrane All outcomes
Orthodontic tooth movement (OTM) during alignment stage | Not reported
Studies not reported
No studies found

Light-emitting diode (LED) photobiomodulation vs Conventional orthodontic appliance treatment

Patient-reported need for analgesics · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment

The review found no eligible studies for this question.

1 finding from 1 review

Non‐surgical adjunctive interventions for accelerating tooth movement in patients undergoing orthodontic treatment 2023 · Cochrane All outcomes
Patient-reported need for analgesics | Not reported
Studies not reported
No studies found

Surgery plus radiotherapy vs Chemotherapy (chemoradiotherapy)

Adverse events associated with treatment · Adults with oral cavity or oropharyngeal cancer

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancers: surgical treatment 2023 · Cochrane All outcomes
Adverse events: not reported for any participants (Iyer 2015).
0 studies
No studies found

CAD/CAM nitinol fixed (bonded) retainer vs Multistrand / spiral wire fixed (bonded) retainer

Adverse effects on oral health: bleeding on probing (lower arch) · People who had received fixed appliance orthodontic treatment

The review found no eligible studies for this question.

1 finding from 1 review

Retention procedures for stabilising tooth position after treatment with orthodontic braces 2023 · Cochrane All outcomes
12 months · lower arch
No RCTs at 12-month follow-up; 2 RCTs at 6 months found no difference (low-certainty)
0 studies
No studies found

Superselective neck dissection vs Elective selective neck dissection

Total mortality · Adults with oral cavity cancer (tongue or floor of mouth) and clinically negative neck nodes

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancers: surgical treatment 2023 · Cochrane All outcomes
Total mortality: not reported.
0 studies
No studies found

Light-emitting diode (LED) photobiomodulation vs Conventional orthodontic appliance treatment

Total number of orthodontic appliance adjustment appointments during treatment · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment

The review found no eligible studies for this question.

1 finding from 1 review

Non‐surgical adjunctive interventions for accelerating tooth movement in patients undergoing orthodontic treatment 2023 · Cochrane All outcomes
Total number of orthodontic appliance adjustment appointments required during treatment stage | Not reported
Studies not reported
No studies found

Supraomohyoid neck dissection vs Modified radical neck dissection

Disease-free survival · Adults with oral cavity or oropharyngeal cancer

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancers: surgical treatment 2023 · Cochrane All outcomes
Disease-free survival: not reported (Guo 2014 reported disease-specific survival, not a review outcome).
0 studies
No studies found

Full-time clear plastic (removable) retainer vs Any type of fixed (bonded) retainer

Patient satisfaction: discomfort/pain (lower arch) · People who had received fixed appliance orthodontic treatment

The review found no eligible studies for this question.

1 finding from 1 review

Retention procedures for stabilising tooth position after treatment with orthodontic braces 2023 · Cochrane All outcomes
12 months · lower arch
No studies measured or reported this outcome
0 studies
No studies found

Surgery plus radiotherapy vs Chemotherapy (chemoradiotherapy)

Recurrence · Adults with oral cavity or oropharyngeal cancer

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancers: surgical treatment 2023 · Cochrane All outcomes
oral cavity
Recurrence: not reported for the oral cancer subgroup (Iyer 2015).
0 studies
No studies found

Fibre-reinforced composite fixed (bonded) retainer vs Multistrand / spiral wire fixed (bonded) retainer

Survival: mean survival time (lower arch, months) · People who had received fixed appliance orthodontic treatment

The review found no eligible studies for this question.

1 finding from 1 review

Retention procedures for stabilising tooth position after treatment with orthodontic braces 2023 · Cochrane All outcomes
12 months · lower arch
No RCTs at 12-month follow-up; 2 RCTs at 24 months: earlier failures with fibre-reinforced composite (MD -1.48, 95% CI -1.88 to -1.08; very low-certainty)
0 studies
No studies found

Surgery vs Radiotherapy alone

Recurrence · Adults with oropharyngeal cancer

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancers: surgical treatment 2023 · Cochrane All outcomes
Recurrence: not reported.
0 studies
No studies found

Silver diamine fluoride (SDF) vs Any (current minimally invasive techniques)

Not applicable (no eligible studies) · Adults with coronal (crown) dental caries in permanent teeth

No eligible studies assessed SDF for coronal caries in adults; this is an evidence gap identified by the review.

1 finding from 1 review

A systematic review on the effect of silver diamine fluoride for management of dental caries in permanent teeth. 2023 All outcomes
The review states there was a lack of studies on the effects of SDF on coronal caries in adults; included adult studies addressed only root caries.
0 studies
No studies found

Superselective neck dissection vs Elective selective neck dissection

Recurrence · Adults with oral cavity cancer (tongue or floor of mouth) and clinically negative neck nodes

The review found no eligible studies for this question.

1 finding from 1 review

Interventions for the treatment of oral cavity and oropharyngeal cancers: surgical treatment 2023 · Cochrane All outcomes
Recurrence: outcome not reported in a usable way in either study.
0 studies
No studies found

Fibre-reinforced composite fixed (bonded) retainer vs Multistrand / spiral wire fixed (bonded) retainer

Adverse effects on oral health: Gingival Index (lower arch) · People who had received fixed appliance orthodontic treatment

The review found no eligible studies for this question.

1 finding from 1 review

Retention procedures for stabilising tooth position after treatment with orthodontic braces 2023 · Cochrane All outcomes
12 months · lower arch
No RCTs at 12-month follow-up; 1 RCT at 6 months: higher gingival inflammation with fibre-reinforced composite (MD 0.59, 95% CI 0.13 to 1.05; very low-certainty)
0 studies
No studies found

Light-emitting diode (LED) photobiomodulation vs Conventional orthodontic appliance treatment

Side effects or other adverse events · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment

The review found no eligible studies for this question.

1 finding from 1 review

Non‐surgical adjunctive interventions for accelerating tooth movement in patients undergoing orthodontic treatment 2023 · Cochrane All outcomes
Harms and side effects | Not reported. None of the included studies assessed harms arising during the LED intervention.
Studies not reported
No studies found

Zinc oxide and eugenol (ZOE) vs Alvogyl (old formulation)

Limitation of chewing or swallowing · Adults (>18 years) with established dry socket following permanent tooth extraction

The review found no eligible studies for this question.

1 finding from 1 review

Local interventions for the management of alveolar osteitis (dry socket) 2022 · Cochrane All outcomes
No studies reported this outcome
0 studies
No studies found

CBT vs alternative treatment

Quality of life · People aged 12 years and over with painful TMD lasting 3 months or longer

The review found no eligible studies for this question.

1 finding from 1 review

Psychological therapies for temporomandibular disorders (TMDs) 2022 · Cochrane All outcomes
This outcome was not measured (not synthesised for this comparison; review-wide only one study reported quality of life).
Studies not reported
No studies found

Living with HIV and undergoing antiretroviral therapy (ART/HAART) vs Healthy HIV-negative controls

Kaposi's sarcoma (WHO clinical stage 4) · Children or adolescents

No eligible studies reported Kaposi's sarcoma.

1 finding from 1 review

Oral Health Status of Children and Adolescents Living with HIV Undergoing Antiretroviral Therapy: A Systematic Review… 2022 All outcomes
Cross-sectional (case-control; single time point) · HIV pediatric/ART clinics, AIDS centers, and hospitals in Brazil, India, Saudi Arabia, and West Africa (Cote d'Ivoire, Mali, Senegal)
Planned WHO stage 4 outcome; no eligible studies (Table 2 lists 'None').
0 studies
No studies found

Traditional screening (referral card given if the inspecting dentist judges the child needs to see a dentist) vs No screening

Proportion of children with treated/untreated caries (receipt of dental care) · School children (aged 4 to 15 years), primary and secondary schools in the UK and India

The review found no eligible studies for this question.

1 finding from 1 review

School dental screening programmes for oral health 2022 · Cochrane All outcomes
Proportion of children with treated/untreated caries: Not reported (Summary of findings 1).
0 studies
No studies found