Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

48 questions · 217 findings · 4 reviews · All outcomes

No studies found 0 · 0%GRADE not reported 217 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Primary dental health aide (PDHA) service-delivery models (PDHA program; PDHA + intensive staffing; PDHA + robust prevention) vs Baseline pre-intervention service-delivery scenario

Projected mean DMFT (children below 5 years) · Alaska Native children (below age 18)

A simulation projected mean DMFT in children under 5 would fall from 7.4 to 4.9 under the PDHA model (certainty not graded).

1 finding from 1 review

Primary dental health aide (PDHA) service-delivery models (PDHA program; PDHA + intensive staffing; PDHA + robust prevention) vs Baseline pre-intervention service-delivery scenario

Projected Significant Caries (SiC) index · Alaska Native children (below age 18)

A simulation projected a 50% drop in the Significant Caries index for children (12.3 to 6.1) under the PDHA model (certainty not graded).

2 findings from 1 review

Primary dental health aide (PDHA) service-delivery models (PDHA program; PDHA + intensive staffing; PDHA + robust prevention) vs Baseline pre-intervention service-delivery scenario

Projected proportion of caries-free children (5-18 years) · Alaska Native children (below age 18)

A simulation projected 0% of children aged 5-18 would be caries-free under the baseline scenario (certainty not graded).

3 findings from 1 review

Primary dental health aide (PDHA) service-delivery models (PDHA program; PDHA + intensive staffing; PDHA + robust prevention) vs Baseline pre-intervention service-delivery scenario

Projected receipt of school-based prevention services · Alaska Native children (below age 18)

A simulation projected that over 90% of children would receive school-based prevention services under the PDHA model, up from 53% (certainty not graded).

1 finding from 1 review

Primary dental health aide (PDHA) service-delivery models (PDHA program; PDHA + intensive staffing; PDHA + robust prevention) vs Baseline pre-intervention service-delivery scenario

Projected dental care utilisation · Alaska Native children (below age 18)

A simulation projected that the PDHA program would raise dental care utilisation from 75% to 90% (certainty not graded).

1 finding from 1 review

Populations in countries with a lower Human Development Index (high category, HDI <0.800) vs Populations in countries with a higher Human Development Index (very high, HDI >=0.800)

Caries experience (mean DMFT) · Adults aged 19-60 years

Pooled caries experience (DMFT) was similar in very-high-HDI and high-HDI countries, and meta-regression found no significant association between national HDI and DMFT; ungraded observational evidence with very high heterogeneity.

3 findings from 1 review

Higher national income (GNI per capita) vs Lower national income (GNI categories: middle <=$15,000 / high $15,001-25,000 / very high >$25,000)

Odds of higher caries (DMFT) category · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)

Higher national income was strongly associated with lower odds of poor oral health (OR 0.10, 95% CI 0.03 to 0.37; about 90% lower odds); not GRADE-rated.

1 finding from 1 review

Higher national income (GNI per capita) vs Lower national income (GNI categories: middle <=$15,000 / high $15,001-25,000 / very high >$25,000)

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

Mean DMFT in 12-year-olds rises as national income falls: 0.90 (very high income), 2.38 (high income), 3.30 (middle income) (Figure 2); not GRADE-rated.

3 findings from 1 review

AG genotype of ENAM rs1264848 vs AA genotype of ENAM rs1264848

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 AG genotype vs AA genotype of ENAM rs1264848 and dental caries susceptibility (AG vs AA model: OR 1.21, 95% CI 0.88-1.65); certainty not graded.

6 findings from 1 review
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TT genotype of AMELX rs6639060 vs CC genotype of AMELX rs6639060

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 AMELX rs6639060 and dental caries susceptibility (TT vs CC model: OR 1.04, 95% CI 0.43-2.51) in the Age group: Adults subgroup; certainty not graded.

3 findings from 1 review

CT genotype of AMELX rs946252 vs CC genotype of AMELX rs946252

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 AMELX rs946252 and dental caries susceptibility (CT vs CC model: OR 2.80, 95% CI 0.93-8.43) in the Ethnicity: Caucasian subgroup; certainty not graded.

6 findings from 1 review
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GG genotype of LTF rs1126478 vs AA + AG genotype of LTF rs1126478

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 GG genotype vs AA + AG genotype of LTF rs1126478 and dental caries susceptibility (GG vs AA + AG model: OR 0.95, 95% CI 0.80-1.13) in the Age group: Children subgroup; certainty not graded.

5 findings from 1 review
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CT genotype of AMELX rs17878486 vs CC genotype of AMELX rs17878486

Dental caries susceptibility · Individuals assessed for dental caries (cases with caries/high caries vs. caries-free or low/very-low-caries controls)

The CT genotype of AMELX rs17878486 was associated with increased dental caries risk (CT vs CC model: OR 5.11, 95% CI 1.33-19.72) in the Ethnicity: Mixed subgroup; certainty not graded.

9 findings from 1 review
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GG genotype of ENAM rs3796704 vs AA + AG genotype of ENAM rs3796704

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 GG genotype vs AA + AG genotype of ENAM rs3796704 and dental caries susceptibility (GG vs AA + AG model: OR 1.05, 95% CI 0.66-1.68) in the Control group: Low caries subgroup; certainty not graded.

6 findings from 1 review
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CT + TT genotype (T-allele carriers) of AMELX rs946252 vs CC genotype of AMELX rs946252

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 + TT genotype (T-allele carriers) vs CC genotype of AMELX rs946252 and dental caries susceptibility (CT + TT vs CC model: OR 1.63, 95% CI 0.67-4.01) in the Ethnicity: Caucasian subgroup; certainty not graded.

6 findings from 1 review
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T allele of AMELX rs946252 vs C allele of AMELX rs946252

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 rs946252 and dental caries susceptibility (T vs C model: OR 0.99, 95% CI 0.53-1.86) in the Ethnicity: Mixed subgroup; certainty not graded.

6 findings from 1 review
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G allele of ENAM rs3796704 vs A allele of ENAM rs3796704

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 G allele vs A allele of ENAM rs3796704 and dental caries susceptibility (G vs A model: OR 1.11, 95% CI 0.57-2.15) in the Ethnicity: Mixed subgroup; certainty not graded.

6 findings from 1 review
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G allele of ENAM rs1264848 vs A allele of ENAM rs1264848

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 G allele vs A allele of ENAM rs1264848 and dental caries susceptibility (G vs A model: OR 0.93, 95% CI 0.65-1.32); certainty not graded.

6 findings from 1 review
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AG genotype of ENAM rs3796704 vs AA genotype of ENAM rs3796704

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 AG genotype vs AA genotype of ENAM rs3796704 and dental caries susceptibility (AG vs AA model: OR 0.35, 95% CI 0.07-1.74) in the Age group: Children subgroup; certainty not graded.

6 findings from 1 review
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CT + TT genotype (T-allele carriers) of AMELX rs17878486 vs CC genotype of AMELX rs17878486

Dental caries susceptibility · Individuals assessed for dental caries (cases with caries/high caries vs. caries-free or low/very-low-caries controls)

The CT + TT genotype (T-allele carriers) of AMELX rs17878486 was associated with increased dental caries risk (CT + TT vs CC model: OR 5.72, 95% CI 2.83-11.59) after excluding the outlier study (Ergoz 2014); certainty not graded.

9 findings from 1 review
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