Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

275 questions · 608 findings · 35 reviews

No studies found 1 · 0.2%GRADE not reported 590 · 97%Very low 0 · 0%Low 5 · 0.8%Moderate 5 · 0.8%High 7 · 1.2%

High-viscosity glass-ionomer ART restorations vs No comparator

Restoration survival · Primary posterior teeth with single-surface cavities

The pooled survival rate was 95% at 1 year.

3 findings from 1 review

High-viscosity glass-ionomer ART restorations vs No comparator

Restoration survival · Primary posterior teeth with multiple-surface cavities

The pooled survival rate was 62% at 2 years.

3 findings from 1 review

Higher consumption of snacks / sugar / soft drinks vs Lower consumption

Dental caries · Healthy children and adolescents in the United Arab Emirates

Higher snacking and soft-drink/sugar consumption were associated with more caries in most studies, though one study found no association with sweet-consumption frequency (narrative synthesis; not GRADE-rated).

1 finding from 1 review

Higher per-capita expenditure on dental health care vs Lower per-capita expenditure on dental health care (USD bands: $0-50 / $51-100 / >$100)

Caries experience (mean DMFT) · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)

Countries with higher per-capita dental expenditure had lower mean DMFT (>$100: 0.96; $51-100: 2.14; $0-50: 3.06) (Figure 4); not GRADE-rated.

3 findings from 1 review

High-viscosity GIC atraumatic restorative treatment vs No control

Restoration survival · Children with decayed primary molar teeth

Multi-surface ART restorations had a reported survival rate of 73% at 1 year.

4 findings from 1 review
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HAART (highly active antiretroviral therapy, >=3 drugs) vs HIV-positive not receiving HAART (standard ART or HAART-naive)

Dental caries · Children and adolescents (<18 years) living with HIV (CLWH)

Among HIV+ children, HAART versus no HAART showed no significant difference in the odds of dental caries by DMFT in cross-sectional studies (OR 1.29, 95% CI 0.59 to 2.84; ungraded).

2 findings from 1 review

HAART (highly active antiretroviral therapy, >=3 drugs) vs HIV-positive not receiving HAART (standard ART or HAART-naive)

Dental caries in permanent teeth · Children and adolescents (<18 years) living with HIV (CLWH)

Among HIV+ children, HAART was associated with a significantly higher DMFT index than no HAART in case-control studies (MD 2.02, 95% CI 1.24 to 2.80; ungraded).

1 finding from 1 review

HAART (highly active antiretroviral therapy, >=3 drugs) vs HIV-positive not receiving HAART (standard ART or HAART-naive)

Caries in primary teeth: dmft (3 years) · Children and adolescents (<18 years) living with HIV (CLWH)

Among HIV+ children, HAART versus no HAART showed no significant difference in the dmft index in case-control studies (MD 0.66, 95% CI -0.26 to 1.58; ungraded).

1 finding from 1 review

High-viscosity GIC atraumatic restorative treatment vs Conventional restoration

Restoration survival · Children with occlusoproximal caries in primary teeth

Multiple reviews reported similar restoration survival for ART versus conventional restorations in occlusoproximal cavities (ungraded).

1 finding from 1 review

High-frequency sugar consumption (three or more times daily) vs Low sugar intake (fewer than three times daily)

Early childhood caries experience (mean dmft) · Nigerian children with primary dentition (approximately 6 months to 5 years)

In primary dentition, high-frequency sugar consumption was associated with slightly higher, non-significant odds of caries (OR 1.13, 95% CI 0.23 to 5.44), with high heterogeneity (I2=83%; ungraded).

1 finding from 1 review

High-frequency sugar consumption (three or more times daily) vs Low sugar intake (fewer than three times daily)

Dental caries in permanent teeth · Nigerian individuals with permanent dentition (approximately 12 years and older)

In permanent dentition, high-frequency sugar consumption was associated with non-significant 15% higher odds of caries (OR 1.15, 95% CI 0.88 to 1.52), with no heterogeneity (I2=0%; ungraded).

1 finding from 1 review

High-frequency sugar consumption (three or more times daily) vs Low sugar intake (fewer than three times daily)

Dental caries prevalence · Nigerian individuals, including children and adults, with primary or permanent dentition

High-frequency sugar consumption was associated with 18% higher but non-significant odds of dental caries in Nigeria (OR 1.18, 95% CI 0.87 to 1.59; I2=36%; ungraded).

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Prostate cancer · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Prostate cancer: OR 1.04 (95% CI 0.98 to 1.09), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Type 2 diabetes mellitus · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Type 2 diabetes: OR 0.63 (95% CI 0.56 to 0.69), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Sporadic colorectal adenoma recurrence · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Sporadic colorectal adenoma recurrence: OR 0.87 (95% CI 0.57 to 1.33), not statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Ischaemic heart disease · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Ischaemic heart disease: HR 0.72 (95% CI 0.65 to 0.81), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Breast cancer · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Breast cancer (Premenopausal): RR 1.01 (95% CI 0.97 to 1.06), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.

3 findings from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

All cause mortality · people with chronic kidney disease (predialysis (GFR 15 to 60 mL/min/1.73 m²), HD, PD, transplant recipients)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for All cause mortality, Patients with chronic kidney disease: RR 0.86 (95% CI 0.81 to 0.92), statistically significant. Umbrella review outcome-level evidence grade: No conclusion.

1 finding from 1 review

Higher circulating 25-hydroxyvitamin D (25(OH)D) concentration vs Lower circulating 25-hydroxyvitamin D (25(OH)D) concentration

Metabolic syndrome (prevalent) · Adults (general population)

Meta-analysis of observational studies (higher vs lower 25(OH)D) for Metabolic syndrome (prevalent): OR 0.49 (95% CI 0.38 to 0.64), statistically significant. Umbrella review outcome-level evidence grade: Suggestive.

1 finding from 1 review