Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

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

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%

Crohn's disease (CD) vs Healthy controls without IBD

Periodontal disease (periodontitis) coincidence · Patients with Crohn's disease (CD) and controls without IBD; adults, both sexes

Patients with Crohn's disease have about 2-fold higher odds of periodontal disease than controls (pooled OR 2.10, 95% CI 1.59-2.78; 5 studies; ungraded).

1 finding from 1 review

Edentulous (0 remaining teeth) vs 20-32 remaining teeth

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

In prospective cohorts, edentulous adults (0 teeth) had a higher cumulative incidence of ACVD-related events than adults with 20-32 teeth (RR 2.65, 95% CI 1.77 to 3.98; 2 cohort studies, I2=60%); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

1 finding from 1 review

Beta-thalassemia major vs Healthy Emirati children

Oral health status (caries, calculus, gingivitis) · Children with beta-thalassemia major in Dubai

One study found higher caries and calculus but lower gingivitis and restorative care in children with beta-thalassemia major compared with healthy Emirati children (narrative synthesis; not GRADE-rated).

1 finding from 1 review

Oral hygiene knowledge and practices assessment vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Oral hygiene knowledge and practices · Children and adolescents in the United Arab Emirates

Oral hygiene knowledge and practices among UAE children and adolescents were generally suboptimal and variable across studies, with better practices among females (narrative synthesis; not GRADE-rated).

1 finding from 1 review

Digital bitewing radiography, sensor-based (CCD/CMOS) vs Direct visual examination after tooth separation or bioptical cavity preparation

Diagnostic accuracy for proximal caries detection (dentin detection level) · Patients with permanent posterior teeth, proximal surfaces assessed clinically (in vivo)

Under in vivo conditions, sensor-based digital bitewing radiography had a pooled sensitivity of 0.96 (95% CI 0.91, 0.98) for proximal caries detection at the dentin detection level; ungraded.

4 findings from 1 review
Show 1 more finding

Higher number of lost teeth (per one additional lost tooth) vs Fewer lost teeth (continuous, per-tooth increment)

Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies

Each additional lost tooth was associated with a multivariable-adjusted HR of 1.02 (95% CI 1.01 to 1.03) for ACVD-related events (13 studies, I2=75%), statistically significant; GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

3 findings from 1 review

Resin infiltration vs Fluoride varnish

Optical/esthetic improvement (DIAGNOdent reading) · Patients (mainly children) with white spot lesions (WSL)

Resin infiltration produced significantly greater optical improvement than fluoride varnish (MD 4.76, 95% CI 0.74 to 8.78; moderate certainty).

3 findings from 1 review

Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances

Percentage of bleeding on probing (BOP) · Adults undergoing orthodontic treatment

No clear difference in bleeding on probing between aligners and fixed appliances in adults at 6-12 weeks (MD -0.26, 95% CI -0.77 to 0.26; very low certainty).

1 finding from 1 review

Quantitative light-induced fluorescence (QLF) vs Histological validation (in vitro) or cavity preparation/biopsy (in vivo)

Occlusal caries detection accuracy · Human permanent posterior teeth (premolars and molars) in patients, occlusal (pit-and-fissure) surfaces

No eligible QLF studies met the meta-analysis inclusion criteria (candidate QLF studies were identified but none had acceptable index/reference tests and reporting quality).

1 finding from 1 review

Intervention not reported

Relative abundance of Veillonella spp.

The intervention showed no clear difference in relative abundance of Veillonella spp.; GRADE not reported.

1 finding from 1 review

Sealant (any type) vs No sealant (control/no treatment)

Initiation of white spot lesions (WSL), visual-tactile assessment · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)

Sealant use reduced the incidence of new white spot lesions versus no sealant (very low certainty).

1 finding from 1 review

Dental imaging (analog or digital radiographs) vs Visual classification

Difference in specificity · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies)

Imaging and visual classification had similar specificity in the fully within-person analysis.

1 finding from 1 review

Inflammatory bowel disease (IBD) vs Healthy controls without IBD

Periodontal disease (periodontitis) coincidence · Patients with inflammatory bowel disease (IBD) and controls without IBD; mostly adults (one pediatric study), both sexes

Patients with IBD have about 2.5-fold higher odds of coexisting periodontal disease than healthy controls (pooled OR 2.49, 95% CI 1.97-3.15; 6 studies; not GRADE-rated).

1 finding from 1 review