Findings

What do systematic reviews say?

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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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Safe housing / favorable household conditions vs Unsafe housing / poor household conditions

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

Safe housing and favorable household conditions are associated with better 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
    having parents who can provide dental care and safe housing are positive predictors for OHRQoL. Socioeconomic factors related to the area of residence, satisfaction with oral health and dental care were shown to be…
    Studies not reported
    GRADE not reported

Clear aligners (Invisalign / thermoformed aligners) vs Conventional orthodontic appliance treatment

Plaque · Orthodontic patients undergoing comprehensive treatment (late mixed or permanent dentition, no active caries)

In randomized trials, clear aligners probably reduce plaque accumulation versus fixed appliances, though the subgroup estimate is imprecise and its CI crosses no effect (SMD -1.79, 95% CI -3.63 to 0.04; moderate certainty).

6 findings from 1 review
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Carious dentin vs Sound dentin

Cathepsin K (CT-K) presence/activity · Human ex vivo carious dentin (mostly coronal), natural caries lesions

Cathepsin K may be increased in carious dentin (one study), but no certainty rating was assigned (ungraded).

1 finding from 1 review

Resin infiltration vs Fluoride varnish

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…

Resin infiltration was significantly better than fluoride varnish (SMD -0.70, 95% CI -1.18 to -0.21); certainty of evidence not assessed (no GRADE).

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 pulpotomy

The effect of MTA versus CH after pulpotomy is uncertain (low certainty).

1 finding from 1 review

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

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

It is very uncertain whether part-time clear plastic (removable) retainer changes adverse effects on oral health: Gingival Index (lower arch) compared with any type of fixed (bonded) retainer (very low certainty).

1 finding from 1 review

38% SDF (indirect pulp capping) vs Resin-modified glass ionomer cement (RMGIC)

Restoration color, marginal staining and luster (esthetics) · Children with deep occlusal caries in young permanent first molars (indirect pulp capping)

RMGIC gave significantly better restoration esthetics than SDF, which caused black staining (p=0.03; ungraded).

1 finding from 1 review

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

Patient satisfaction (measured by patient satisfaction or aesthetic scales) · People who had received fixed appliance orthodontic treatment

It is very uncertain whether fibre-reinforced composite fixed (bonded) retainer changes patient satisfaction: aesthetics (VAS 0-10 cm, lower arch) compared with multistrand / spiral wire fixed (bonded) retainer (very low certainty).

1 finding from 1 review

Multivariable caries prediction model vs Alternative prediction model(s) within the same study, or no formal comparator (models compared descriptively; no between-model statistical test)

Predictive performance for root caries increment (negative likelihood ratio, LR-) · Older adults (aged 52-95; mean 52-73) at risk of root caries increment

The single root-caries validation study (Hayes 2017) showed LR- of 0.34-0.41, above the useful rule-out threshold; no pooled estimate; ungraded.

2 findings from 1 review

Platelet-rich fibrin (PRF) graft vs Mineral trioxide aggregate (MTA)

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

The two trials of PRF versus MTA for success gave contradictory results and were not pooled (ungraded).

1 finding from 1 review

38% silver diamine fluoride vs Atraumatic restorative treatment (ART)

Caries/restoration status in permanent molars · Children with dental caries in permanent (first) molars

SDF gave significantly better caries/restoration outcomes than ART over 9 months in children's permanent molars (p=0.004; ungraded).

1 finding from 1 review

38% SDF plus oral health education vs oral health instruction plus tonic water

new root-surface carious lesions or restorations · community-dwelling older adults with root caries

SDF had a 62% preventative fraction; no pooled estimate or GRADE rating was reported.

1 finding from 1 review

Irradiated carious dentin vs Non-irradiated carious dentin

MMP-2 expression/activity · Human ex vivo carious dentin (head/neck radiotherapy)

MMP-2 showed no difference between irradiated and non-irradiated carious dentin (one study; ungraded).

1 finding from 1 review

Sodium fluoride (5% NaF, one-time [Mauro] or every 6 months [Liu]) vs Control (water or unspecified)

New coronal caries in permanent molars (caries prevention) · Children with dental caries in permanent (first) molars

NaF gave a 48% prevented fraction (fissure site) vs water (p<0.002; ungraded).

3 findings from 1 review