Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,297 questions · 3,638 findings · 215 reviews · All outcomes

No studies found 98 · 2.7%GRADE not reported 2,946 · 81%Very low 263 · 7.2%Low 158 · 4.3%Moderate 137 · 3.8%High 36 · 1%

Conventional bitewing radiography (E-speed film) vs Cavity preparation or biopsy (operative validation)

Diagnostic accuracy for occlusal caries detection at the dentin caries detection level (D0-2 versus D3-4) · Human permanent posterior teeth (premolars and molars) in patients, occlusal (pit-and-fissure) surfaces

In in vivo, conventional bitewing radiography (E-speed) pooled diagnostic odds ratio was 127.56 (95% CI 7.38 to 2203.70) for occlusal caries at the dentin detection level; ungraded.

4 findings from 1 review
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Conventional bitewing radiography (D-speed film) vs Cavity preparation or biopsy (operative validation)

Diagnostic accuracy for occlusal caries detection at the caries detection level (D0 versus D1-D4) · Human permanent posterior teeth (premolars and molars) in patients, occlusal (pit-and-fissure) surfaces

In in vivo, conventional bitewing radiography (D-speed) pooled sensitivity was 0.65 (95% CI 0.57 to 0.73) for occlusal caries at the caries detection level; ungraded.

4 findings from 1 review
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Cesarean section delivery vs Vaginal delivery

Caries prevalence (early childhood caries) · Toddlers and preschool children, 2 to 6 years of age (primary dentition)

Caesarean section delivery may be associated with a modestly higher prevalence of early childhood caries than vaginal delivery (pooled OR 1.48), but the evidence is inconsistent and of very low certainty.

1 finding from 1 review

Conventional bitewing radiography (E-speed film) vs Cavity preparation or biopsy (operative validation)

Diagnostic accuracy for occlusal caries detection at the caries detection level (D0 versus D1-D4) · Human permanent posterior teeth (premolars and molars) in patients, occlusal (pit-and-fissure) surfaces

In in vivo, conventional bitewing radiography (E-speed) pooled sensitivity was 0.80 (95% CI 0.71 to 0.87) for occlusal caries at the caries detection level; ungraded.

4 findings from 1 review
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Visual examination (VE) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)

Diagnostic accuracy for occlusal caries detection at the 1/3 dentin caries detection level (Ekstrand; D0-2 versus D3-4) · Extracted human permanent posterior teeth (premolars and molars), occlusal (pit-and-fissure) surfaces

In in vitro, visual examination pooled diagnostic odds ratio was 16.6 (95% CI 4.85 to 56.79) for occlusal caries at the 1/3 dentin detection level; ungraded.

4 findings from 1 review
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Digital bitewing radiography, phosphor plate (PSP) vs Histological validation of dental tissues (gold standard)

Diagnostic accuracy for proximal caries detection (dentin detection level) · Extracted permanent posterior teeth with proximal surfaces (in vitro)

Under in vitro conditions, phosphor-plate digital bitewing radiography had a summary ROC AUC of 0.92 for proximal caries detection at the dentin detection level; ungraded.

4 findings from 1 review
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Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances

White spot lesions (WSLs), tooth level · Adults undergoing orthodontic treatment

A single study reported a lower risk of white spot lesions (tooth level) with aligners versus fixed appliances in adults at 3 months (RR 0.72, 95% CI 0.60 to 0.86; ungraded).

1 finding from 1 review

0-19 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, the crude HR for ACVD-related events in adults with 0-19 teeth vs adults with 20-32 teeth was 2.27 (95% CI 1.50 to 3.43; 1 study, I2 not applicable (single study)); GRADE per-analysis ratings reported in Supplementary File 7 (not available in provided sources).

4 findings from 1 review
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Conventional bitewing radiography, F-speed film vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)

Diagnostic accuracy for occlusal caries detection at the dentin caries detection level (D0-2 versus D3-4) · Extracted human permanent posterior teeth (premolars and molars), occlusal (pit-and-fissure) surfaces

In in vitro, conventional bitewing radiography (F-speed) pooled specificity was 0.97 (95% CI 0.71 to 0.998) for occlusal caries at the dentin detection level; ungraded.

4 findings from 1 review
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Conventional bitewing radiography (D-speed film) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)

Diagnostic accuracy for occlusal caries detection at the dentin caries detection level (D0-2 versus D3-4) · Extracted human permanent posterior teeth (premolars and molars), occlusal (pit-and-fissure) surfaces

In in vitro, conventional bitewing radiography (D-speed) pooled specificity was 0.73 (95% CI 0.53 to 0.87) for occlusal caries at the dentin detection level; ungraded.

4 findings from 1 review
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Visual examination (VE) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)

Diagnostic accuracy for occlusal caries detection at the caries detection level (D0 versus D1-D4) · Extracted human permanent posterior teeth (premolars and molars), occlusal (pit-and-fissure) surfaces

In in vitro, visual examination pooled summary ROC AUC was 0.59 for occlusal caries at the caries detection level; ungraded.

4 findings from 1 review
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Laser fluorescence (DIAGNOdent 2190/pen) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)

Diagnostic accuracy for occlusal caries detection at the caries detection level (D0 versus D1-D4) · Extracted human permanent posterior teeth (premolars and molars), occlusal (pit-and-fissure) surfaces

In in vitro, laser fluorescence pen (2190) pooled sensitivity was 0.78 (95% CI 0.44 to 0.94) for occlusal caries at the caries detection level; ungraded.

4 findings from 1 review
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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

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
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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