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Evidence found and GRADE certainty

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

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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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T allele of AMELX rs2106416 vs C allele of AMELX rs2106416

Dental caries susceptibility · Individuals assessed for dental caries (cases with caries/high caries vs. caries-free or low/very-low-caries controls)

No significant association between T allele vs C allele of AMELX rs2106416 and dental caries susceptibility (T vs C model: OR 0.59, 95% CI 0.16-2.11); certainty not graded.

3 findings from 1 review

Intraglandular botulinum neurotoxin (BoNT) injection vs No BoNT (placebo or pre-treatment baseline)

Salivary pH · Patients with drooling (sialorrhea) due to neurological disease

BoNT injections were not associated with significant changes in oral/salivary pH across three studies (ungraded; no effect estimate reported).

1 finding from 1 review
  • Oral health effects of botulinum toxin treatment for drooling: a systematic review. 2020 All outcomes
    Before vs after BoNT injection · Neurological-disease populations with drooling (e.g., cerebral palsy, Parkinson disease, adults with sialorrhea); specialist clinical care
    Wu et al. did not observe significant differences in participants' oral pH before and after BoNT-A injections between the active and control groups. There were also no statistically significant differences regarding…
    3 studies
    GRADE not reported

All fluorescence-based devices (red, blue, and green fluorescence combined) vs Reference standard (histology, excavation, or enhanced visual examination)

Diagnostic odds ratio (DOR) by subgroup: Low dentine-caries prevalence (<=14%) (detection of early enamel caries, D1 threshold) · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted teeth of children or…
1 finding from 1 review

GERD vs Healthy individuals without reflux (controls)

Dental caries · Adults with gastroesophageal reflux disease (GERD) or laryngopharyngeal reflux (LPR)

Reflux appears associated with a higher prevalence of dental caries than in healthy individuals based on three studies, though to a lesser extent than erosion; evidence is ungraded and not pooled.

1 finding from 1 review

Ultraviolet (UV) light air decontamination vs No UV light / standard operatory

Outcome not reported · Dental healthcare providers (dentist, dental surgery assistant, dental hygienist, dental technologist, dental laboratory staff, dental…

The review found no eligible studies for this question.

1 finding from 1 review

CT genotype of ENAM rs3796703 vs CC genotype of ENAM rs3796703

Dental caries susceptibility · Individuals assessed for dental caries (cases with caries/high caries vs. caries-free or low/very-low-caries controls)

No significant association between CT genotype vs CC genotype of ENAM rs3796703 and dental caries susceptibility (CT vs CC model: OR 0.89, 95% CI 0.23-3.48) in the Ethnicity: Asian subgroup; certainty not graded.

2 findings from 1 review

Topical clobetasol propionate vs Topical tacrolimus

Adverse effects · People with symptomatic, biopsy-confirmed oral lichen planus (OLP); not concurrently receiving other OLP treatment

It is very uncertain whether topical clobetasol propionate changes adverse effects compared with topical tacrolimus (very low certainty).

1 finding from 1 review

Canary System (Quantum Dental Technologies; red fluorescence, scale 0-100) vs Reference standard: histology, enhanced visual examination with or without radiographs, or excavation

Outcome not reported · Children or adults presenting asymptomatically or suspected of having enamel caries (in vivo/clinical studies); extracted teeth of…

The review found no eligible studies for this question.

1 finding from 1 review

Electrical counter-stimulation device (DentalVibe) vs Conventional treatment (no stimulation)

Intraoperative pain · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

It is very uncertain whether electrical counter-stimulation device (DentalVibe) changes self- or observational assessment of intraoperative… compared with conventional treatment (no stimulation) (very low certainty).

1 finding from 1 review

All fluorescence-based devices (red, blue, and green fluorescence combined) vs Reference standard (histology, excavation, or enhanced visual examination)

Sensitivity at fixed upper-quartile specificity 0.90 (detection of early enamel caries, D1 threshold) · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted teeth of children or…
1 finding from 1 review

Clinical examination with risk-based recall vs Clinical examination with 6-month recall

Dental caries: prevalence of root caries · Dentate adults (aged 18 years and older) receiving dental check-ups in UK general dental practices (regular attenders)

Clinical examination with risk-based recall showed no clear difference in dental caries: prevalence of root caries compared with clinical examination with 6-month recall; GRADE not reported.

1 finding from 1 review

Preterm birth (<37 weeks gestation) vs Full-term birth (37 weeks or more gestation)

Early childhood caries (ECC) · Children aged 6 years or younger (preschool children)

In children aged 3 years or younger, preterm birth was not associated with early childhood caries (OR 0.90, 95% CI 0.59 to 1.37); certainty not graded.

1 finding from 1 review

TT genotype of ENAM rs3796703 vs CC genotype of ENAM rs3796703

Dental caries susceptibility · Individuals assessed for dental caries (cases with caries/high caries vs. caries-free or low/very-low-caries controls)

No significant association between TT genotype vs CC genotype of ENAM rs3796703 and dental caries susceptibility (TT vs CC model: OR 5.22, 95% CI 0.25-108.96) in the Ethnicity: Asian subgroup; certainty not graded.

1 finding from 1 review

Hypnosis vs Conventional treatment

Patient satisfaction: measured by questionnaires · Children and adolescents having dental treatment under local anaesthetic without general anaesthesia

The review found no eligible studies for this question.

1 finding from 1 review

Clinical examination with 24-month recall vs Clinical examination with 6-month recall

Periodontal disease: gingival bleeding (percentage of sites) · Dentate adults (aged 18 years and older) receiving dental check-ups in UK general dental practices (regular attenders)

Clinical examination with 24-month recall showed no clear difference in periodontal disease: gingival bleeding (percentage of sites) compared with clinical examination with 6-month recall (moderate certainty).

1 finding from 1 review

All exposure-OHRQoL estimates pooled for publication-bias correction (meta-trim sensitivity); specific exposure set not defined in source vs Not specified

Poor oral health-related quality of life (OHRQoL) · Children aged 3-12 years

A trim-and-fill sensitivity analysis pooling every exposure estimate gave an overall OR of 0.17 (95% CI 0.13-0.21) after correcting for significant publication bias (Fig. 13); this combined estimate spans heterogeneous exposures and is a publication-bias sensitivity result (ungraded).

1 finding from 1 review