Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

161 questions · 245 findings · 27 reviews · Dental caries

No studies found 0 · 0%GRADE not reported 219 · 89.4%Very low 5 · 2%Low 7 · 2.9%Moderate 7 · 2.9%High 7 · 2.9%

Genetically predicted DMFS (dental caries) vs Reference (1-SD lower genetically predicted DMFS)

Forearm fracture · European-ancestry adults

Genetically predicted dental caries (DMFS) had no significant causal effect on fracture of forearm (multivariable MR, OR 0.973).

2 findings from 1 review

Genetically predicted DMFS (dental caries) vs Lower genetically predicted DMFS

Femur fracture · European GWAS participants

The SVMR MR-Egger interval included the null.

3 findings from 1 review

Genetically predicted periodontitis vs Lower genetically predicted periodontitis liability

Osteoporosis with pathological fracture · European-ancestry adults

Genetically predicted periodontitis had no causal effect on osteoporosis with pathological fracture (single-variable MR, OR 1.003).

2 findings from 1 review

Genetically predicted DMFS (dental caries) vs Lower genetically predicted DMFS

Lumbar spine and pelvis fracture · European GWAS participants

The SVMR Weighted Median interval included the null.

3 findings from 1 review

Genetically predicted DMFS (dental caries) vs Reference (1-SD lower genetically predicted DMFS)

Postmenopausal osteoporosis with pathological fracture · Postmenopausal women (European ancestry)

In multivariable MR (adjusted for periodontitis), genetically predicted dental caries (DMFS) causally increased postmenopausal osteoporosis with pathological fracture (OR 1.422, moderate evidence).

2 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)

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

Genetically predicted periodontitis vs Without periodontitis (lower genetic liability)

Lacunar stroke · European-ancestry adults

Genetically predicted periodontitis was associated with modestly higher odds of lacunar stroke (OR 1.24); ungraded MR, though the FDR-adjusted P was 0.064 for the primary IVW-FE method (ML-adjusted P 0.037).

1 finding from 1 review

Human Development Index (HDI) vs Higher vs lower HDI categories

Oral health-related quality of life · people aged 60 years and older living in the community

Older adults in higher-HDI countries had better OHRQoL (high 79.9, 95% CI 74.4 to 85.5; very high 78.4, 95% CI 71.1 to 85.8) than those in medium-HDI countries (63.5, 95% CI 54.3 to 72.7); the difference by HDI was statistically significant (ungraded).

3 findings from 1 review

Genetically predicted periodontitis vs Lower genetically predicted periodontitis liability

Lumbar spine and pelvis fracture · European-ancestry adults

Genetically predicted periodontitis had no causal effect on fracture of lumbar spine and pelvis (multivariable MR, OR 1.060).

2 findings from 1 review

Country-level unemployment rate vs Higher vs lower unemployment-rate categories

Oral health-related quality of life · people aged 60 years and older living in the community

OHRQoL did not differ significantly across country-level unemployment-rate categories; no pooled estimate was reported in the text (ungraded).

1 finding from 1 review

Genetically predicted periodontitis vs Lower genetically predicted periodontitis liability

Femoral neck bone mineral density (FN-BMD) · European-ancestry adults

Genetically predicted periodontitis had no causal effect on femoral neck BMD.

1 finding from 1 review

Genetically predicted DMFS (dental caries) vs Reference (1-SD lower genetically predicted DMFS)

Femoral neck bone mineral density (FN-BMD) · European-ancestry adults

Genetically predicted dental caries (DMFS) had no causal effect on femoral neck BMD.

1 finding from 1 review

Genetically predicted periodontitis vs Lower genetically predicted periodontitis liability

Femur fracture · European-ancestry adults

Genetically predicted periodontitis had no causal effect on fracture of femur (multivariable MR, OR 1.034).

2 findings from 1 review

Genetically predicted periodontitis vs Lower genetically predicted periodontitis liability

Osteoporosis · European-ancestry adults

Genetically predicted periodontitis had no causal effect on osteoporosis (multivariable MR, OR 1.000).

2 findings from 1 review

Genetically predicted DMFS (dental caries) vs Without dental caries (lower genetic liability)

Lacunar stroke · European-ancestry adults

Genetically predicted dental caries showed no significant causal association with lacunar stroke (ungraded MR).

1 finding from 1 review