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%

Fluoride varnish vs placebo

Caries increment, surface index D(M)FS · Children or adolescents

In the illustrative network meta-regression the SMD for caries increment showed a treatment-by-year interaction and differed between fluoride in varnish and placebo at randomization years 1954 to 1980; certainty was not graded.

1 finding from 1 review

Selective or stepwise carious tissue removal vs Non-selective or complete carious tissue removal

Proportion of dentists selecting selective or stepwise removal · Dentists surveyed about deep carious lesions in permanent teeth

In Oen 2007, 18% of surveyed dentists selected selective or stepwise removal.

12 findings from 1 review
Show 9 more findings

Intervention not reported

Dental caries prevalence in primary teeth (cavitated lesions) · Children aged 5-6 years in Latin America and the Caribbean

In other Latin American/Caribbean countries, pooled primary-teeth caries prevalence was 70% (95% CI 59-79%), significantly higher than Brazil (p=0.002); certainty not graded.

1 finding from 1 review

Intervention not reported

Dental caries prevalence in permanent teeth (cavitated lesions) · Children aged 11-13 years in Latin America and the Caribbean

In other Latin American/Caribbean countries, pooled permanent-teeth caries prevalence was 64% (95% CI 45-79%), not significantly different from Brazil (p=0.42); certainty not graded.

1 finding from 1 review

Selective or stepwise carious tissue removal vs Non-selective or complete carious tissue removal

Proportion of dentists utilizing SE/SW for deep carious lesions · Dentists managing deep carious lesions in permanent vital teeth

Across nine surveys of 4199 dentists, a pooled 53% (95% CI 44% to 62%) chose selective or stepwise (evidence-based) carious tissue removal for deep lesions in permanent teeth, with very high heterogeneity (I2=96%) and no formal certainty rating (ungraded).

1 finding from 1 review

Intervention not reported

Dental caries prevalence in primary teeth (cavitated lesions) · Children aged 5-6 years in Latin America and the Caribbean

In Brazil, pooled primary-teeth caries prevalence in 5-6 year-olds was 52% (95% CI 49-54%); certainty not graded.

1 finding from 1 review

Intervention not reported

Dental caries prevalence in primary teeth (cavitated lesions) · Children aged 5-6 years in Latin America and the Caribbean

About 56% of 5-6 year-old children in Latin America and the Caribbean had dental caries in primary teeth (95% CI 52-59%); certainty not graded.

1 finding from 1 review

Intervention not reported

Dental caries prevalence in permanent teeth (cavitated lesions) · Children aged 11-13 years in Latin America and the Caribbean

In Brazil, pooled permanent-teeth caries prevalence in 11-13 year-olds was 56% (95% CI 53-60%), with a significant declining trend over time; certainty not graded.

1 finding from 1 review

Selective or stepwise carious tissue removal vs Non-selective or complete carious tissue removal

Barriers and facilitators of SE/SW utilization · Dentists managing deep carious lesions in permanent vital teeth

Dentists' use of selective or stepwise removal was shaped by their age and understanding of caries, professional guidelines, peers and professional identity, financial and regulatory incentives, and beliefs about how treatments perform, identified by thematic analysis mapped to the TDF and Behavior Change Wheel (ungraded).

1 finding from 1 review

Selective or stepwise carious tissue removal vs Non-selective or complete carious tissue removal

Temporal change in the proportion of dentists utilizing SE/SW · Dentists managing deep carious lesions in permanent vital teeth

The proportion of dentists choosing selective or stepwise removal rose significantly over time, by about 1.6% per calendar year (meta-regression, p<0.05), a trend the authors described as borderline (ungraded).

1 finding from 1 review

Intervention not reported

Dental caries prevalence in permanent teeth (cavitated lesions) · Children aged 11-13 years in Latin America and the Caribbean

About 58% of 11-13 year-old children in Latin America and the Caribbean had dental caries in permanent teeth (95% CI 54-61%); certainty not graded.

1 finding from 1 review

Down syndrome vs Individuals without Down syndrome (healthy controls: siblings, schoolchildren or others)

Mean DMFT (decayed, missing, filled permanent teeth) · Individuals of all ages

Individuals with Down syndrome had a lower mean DMFT in permanent teeth than controls (pooled SMD -0.18, 95% CI -0.35 to -0.02; 6 studies; I2=20%); certainty of evidence not graded.

1 finding from 1 review

Breastfeeding vs Bottle feeding

Dental caries · Children with exclusively primary dentition (age ≤71 months)

In a meta-analysis of two cross-sectional studies, breastfed children had lower odds of dental caries than bottle-fed children (OR 0.43, 95% CI 0.23 to 0.80); certainty was not formally graded.

2 findings from 1 review

Down syndrome vs Individuals without Down syndrome (healthy controls: siblings, schoolchildren or others)

Dental caries · Individuals of all ages

Individuals with Down syndrome had a lower prevalence of dental caries than those without (pooled OR 0.36, 95% CI 0.22 to 0.57; 2 studies; I2=0%); certainty of evidence not graded.

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

Alzheimer’s disease · Participants in observational studies

The meta-analysis of observational studies reported a SMD (to OR) of 0.08 (95% CI 0.01 to 0.63) for higher versus lower circulating vitamin D concentration.

1 finding from 1 review

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

Aggressive prostate cancer · Participants in observational studies

The meta-analysis of observational studies reported a OR of 0.88 (95% CI 0.68 to 1.15) for higher versus lower circulating vitamin D concentration.

1 finding from 1 review

Vitamin D vs placebo or control

Fasting blood glucose (mg/dL) · Adults with diabetes

Meta-analysis of randomised trials of vitamin D supplementation for Fasting glucose (Diabetes patients with normal glucose tolerance): WMD 0.01 (95% CI -0.21 to 0.23), not statistically significant. Umbrella review outcome-level evidence grade: Substantial effect unlikely.

2 findings from 1 review