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Evidence found and GRADE certainty

2,745 questions · 4,389 findings · 203 reviews · Oral Health

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No studies found 39 · 0.9%GRADE not reported 3,844 · 87.6%Very low 198 · 4.5%Low 137 · 3.1%Moderate 134 · 3.1%High 37 · 0.8%

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

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

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.

3 findings 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.

2 findings 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.

3 findings 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