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Evidence found and GRADE certainty

3,556 questions · 10,375 findings · 429 reviews · Oral Health

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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Polyether impression material vs Polyvinyl siloxane impression material

Pulp necrosis · Vital teeth

The pooled incidence with polyether impression material was 4.02%.

2 findings from 1 review

38% SDF varnish plus oral health instruction vs oral health instruction plus water

new root-surface carious lesions or restorations · Older adults with root caries in permanent (mature) teeth (mean age 75 years)

SDF had a 71% preventative fraction at 36 months; no pooled estimate or GRADE rating was reported.

1 finding from 1 review

PET-CT following chemoradiotherapy (neck dissection only if no/incomplete response) vs Planned neck dissection before or after chemoradiotherapy

Total mortality · Adults with oral cavity or oropharyngeal cancer with nodal disease (stage N2 or N3)

PET-CT following chemoradiotherapy (neck dissection only if… showed no clear difference in total mortality compared with planned neck dissection before or after chemoradiotherapy (moderate certainty).

1 finding from 1 review

Herbal mouthwash vs placebo

Gingival inflammation-related index · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

Herbal mouthwash reduced gingival inflammation-related indices versus placebo, but certainty is very low.

1 finding from 1 review

Elective radical (comprehensive) neck dissection vs Elective selective neck dissection

Adverse events associated with treatment · Adults with oral cavity cancer
1 finding from 1 review

Carious dentin before cavity sealing vs Carious dentin after cavity sealing

MMP-8 expression/activity · Human ex vivo carious dentin under sealed cavities

MMP-8 may be higher before than after cavity sealing, but the evidence is very uncertain (very low certainty).

1 finding from 1 review

Low‐level laser therapy vs Conventional orthodontic appliance treatment

Rate of maxillary molar intrusion for correction of anterior open bite · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
1 finding from 1 review

Poor / irregular toothbrushing vs Toothbrushing alone

Oral health-related quality of life · Adolescents (10-19 years)

Irregular/poor toothbrushing is associated with worse OHRQoL in adolescents (narrative synthesis; no pooled estimate or GRADE rating).

1 finding from 1 review
  • Oral-health-related quality of life in adolescents: umbrella review. 2023 All outcomes
    Community/school/clinic settings; adolescents 10-19 years; included reviews conducted in multiple countries
    The systematic review reports factors that physical disability, visual impairment, mental disorders, poor diet and irregular brushing negatively impact OHRQoL [36].
    Studies not reported
    GRADE not reported

Calcium hydroxide (CH) vs Mineral trioxide aggregate (MTA)

Overall success (composite of clinical and radiographic success) · Patients with carious pulp exposure in mature permanent teeth

In mature teeth, MTA probably achieves higher clinical and radiographic success than calcium hydroxide (OR 3.34, 95% CI 1.81-6.17; moderate certainty).

1 finding from 1 review

Fluoride varnish vs CPP-ACFP

Remineralization / reduction in lesion severity (change in QLF, laser fluorescence, or lesion area) · Patients with white spot lesions / early caries lesions (WSLs/ECLs), including orthodontic and non-orthodontic lesions, active caries…

Fluoride varnish did not differ significantly from CPP-ACFP (SMD 0.18, 95% CI -0.29 to 0.64); certainty of evidence not assessed (no GRADE).

1 finding from 1 review

Light vibrational forces (LVF) vs Conventional orthodontic appliance treatment

Oral health-related quality of life · Adolescents and adults with malocclusion undergoing orthodontic treatment with fixed or removable appliances
1 finding from 1 review

Mineral trioxide aggregate (MTA) vs Calcium hydroxide (CH)

Overall success (composite of clinical and radiographic success) · Patients with carious pulp exposure in permanent teeth undergoing direct pulp capping

MTA increases clinical and radiographic success versus CH after direct pulp capping (moderate certainty).

1 finding from 1 review

Irradiated carious dentin vs Non-irradiated carious dentin

MMP-9 expression/activity · Human ex vivo carious dentin (head/neck radiotherapy)

MMP-9 showed no increase in irradiated vs non-irradiated carious dentin (one study; ungraded).

1 finding from 1 review

Outer carious dentin (by lesion depth/location) vs Inner carious dentin

MMP-2 location/depth · Human ex vivo carious dentin

No clear direction of MMP-2 presence by lesion depth/location was found; the evidence is very uncertain (very low certainty).

1 finding from 1 review

Upper clear plastic retainer + lower interproximal reduction (adjunctive) vs Positioner

Stability: Little's Irregularity Index (lower arch) · People who had received fixed appliance orthodontic treatment

Upper clear plastic retainer + lower interproximal reduction… led to lower stability: Little's Irregularity Index (lower arch) compared with positioner; GRADE not reported.

1 finding from 1 review

Sodium fluoride (NaF) varnish, applied every 3 months, plus OHI vs inactive control

Root carious lesions prevention · Older adults with root caries (community-dwelling or residential elders)

In elders, sodium fluoride varnish gave a 64% prevented fraction for root caries vs water, lower than SDF (71%) (p<0.01; ungraded).

1 finding from 1 review

Outer carious dentin (by lesion depth/location) vs Inner carious dentin

MMP-20 location/depth (outer vs inner) · Human ex vivo carious dentin

MMP-20 probably decreases in outer compared with inner carious dentin (moderate certainty).

1 finding from 1 review

Temporomandibular disorder vs No temporomandibular disorder

Oral health-related quality of life · Adolescents (10-19 years)

Temporomandibular disorder is associated with worse OHRQoL in adolescents (narrative synthesis; no pooled estimate or GRADE rating).

2 findings from 1 review