Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,348 questions · 1,514 findings · 111 reviews · Oral Health

No studies found 287 · 19%GRADE not reported 823 · 54.4%Very low 243 · 16.1%Low 104 · 6.9%Moderate 49 · 3.2%High 8 · 0.5%

Occlusal splint vs No treatment or placebo (non-occlusal or transparent-foil placebo splint)

Range of mandibular motion · People with temporomandibular disorders (TMD)

Occlusal splint showed no clear difference in range of mandibular motion compared with no treatment or placebo (non-occlusal or transparent-foil placebo…; GRADE not reported.

1 finding from 1 review

Systemic antibiotics without surgical intervention (with or without analgesics) vs Matched placebo without surgical intervention (with or without analgesics)

Outcome not reported · Adults with symptomatic apical periodontitis or acute apical abscess

The review found no eligible studies for this question.

1 finding from 1 review

Silver diamine fluoride (SDF) vs Placebo, control, and/or other interventions

Caries arrestment at the tooth level · Children and adults without systemic diseases affecting dental health

SDF showed a higher caries-free proportion at the tooth level, but the reported difference was not statistically significant.

1 finding from 1 review

Intralesional dexamethasone injections vs placebo injection

Burning sensation (VAS 0-100) · People of any age with a confirmed diagnosis, by clinical examination and biopsy, of oral submucous fibrosis (OSF)

It is very uncertain whether intralesional dexamethasone injections changes burning sensation (VAS 0-100) compared with placebo injections (very low certainty).

2 findings from 1 review

Silver diamine fluoride (SDF) vs placebo or no treatment

Adverse effects · Children and adults (with or without carious lesions)
2 findings from 1 review

Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT

Pocket closure · Adults (> 18 years) with recurrent periodontitis, receiving supportive (maintenance) periodontal care
2 findings from 1 review

Postoperative systemic antibiotics (phenoxymethylpenicillin/penicillin VK, 7-day course), partial or total chemo-mechanical debridement and analgesics vs Matched placebo, partial or total chemo-mechanical debridement and analgesics

Pain at 7 days · Adults with a symptomatic necrotic tooth or localised acute apical abscess (no signs of spreading infection or systemic involvement)

It is very uncertain whether postoperative systemic antibiotics… changes pain at 7 days compared with matched placebo, partial or total chemo-mechanical debridement and… (very low certainty).

1 finding from 1 review

Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT

Quality of life · Adults (> 18 years) with recurrent periodontitis, receiving supportive (maintenance) periodontal care

The review found no eligible studies for this question.

1 finding from 1 review

Occlusal splint vs No treatment or placebo (non-occlusal or transparent-foil placebo splint)

Recurrence · People with temporomandibular disorders (TMD)

The review found no eligible studies for this question.

1 finding from 1 review
  • Listed in Summary of findings 1 as 'Not reported'; this outcome was not reported by any included study for this comparison. Recurrence rate was not reported in any included study across the whole review.
    0 studies
    No studies found

Silver diamine fluoride (SDF) vs Other methods (pooled: ART/glass ionomer cement, nano-silver fluoride, sodium fluoride varnish, placebo)

Adverse effects (tooth staining and other side effects) · Children and adults with active dental caries (aged 1-50; mostly preschool/school children with primary dentition)

SDF commonly causes black staining of arrested lesions; only mild, transient adverse events were reported, with no major adverse events (ungraded).

1 finding from 1 review

Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT

Change in probing pocket depth (PPD) · Adults (> 18 years) with recurrent periodontitis, receiving supportive (maintenance) periodontal care

Adjunctive antimicrobial photodynamic therapy (aPDT) applied after… showed no clear difference in change in probing pocket depth (PPD) compared with subgingival instrumentation (SI) alone (hand or power-driven, or…; GRADE not reported.

2 findings from 1 review

Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT

Change in gingival recession (REC) · Adults (> 18 years) with a clinical diagnosis of periodontitis, receiving active (non-surgical anti-infective) treatment

It is very uncertain whether adjunctive antimicrobial photodynamic therapy (aPDT) applied after… changes change in gingival recession (REC) compared with subgingival instrumentation (SI) alone (hand or power-driven, or… (very low certainty).

2 findings from 1 review

Prophylaxis (teeth cleaning) and CHX or iodine-NaF solution application in the dentition of women (mothers) vs placebo

Caries presence in primary teeth · For interventions, pregnant women and mothers of infants in the first year of life; for outcomes, children up to 6 years of age

It is very uncertain whether prophylaxis (teeth cleaning) and CHX or iodine-NaF solution… changes caries presence in primary teeth compared with placebo (very low certainty).

1 finding from 1 review

Probiotics vs placebo or control

Streptococcus mutans count · Children and/or adolescents (<18 years) without background systemic disease

Probiotics probably reduce Streptococcus mutans count versus control (MD -0.40 CFU/mL, 95%CI -0.57 to -0.24; moderate certainty).

1 finding from 1 review

Adjunctive antimicrobial photodynamic therapy (aPDT) applied after submucosal instrumentation (SI) vs Submucosal instrumentation (SI) alone, or SI plus placebo/sham aPDT

Pocket closure · Adults (> 18 years) with peri-implant mucositis, receiving active treatment

The review found no eligible studies for this question.

1 finding from 1 review

Adjunctive antimicrobial photodynamic therapy (aPDT) applied after subgingival instrumentation (SI) vs Subgingival instrumentation (SI) alone (hand or power-driven, or both), or SI plus placebo/sham aPDT

Patient satisfaction · Adults (> 18 years) with recurrent periodontitis, receiving supportive (maintenance) periodontal care

The review found no eligible studies for this question.

1 finding from 1 review

Antioxidants (lycopene, curcumin, Oxitard) vs Placebo or no active treatment

Difficulty in mouth opening (participant-reported proxy) · People of any age with a confirmed diagnosis, by clinical examination and biopsy, of oral submucous fibrosis (OSF)

Antioxidants (lycopene, curcumin, Oxitard) led to lower difficulty in mouth opening (participant-reported proxy) compared with placebo or no active treatment; GRADE not reported.

1 finding from 1 review