Findings

What do systematic reviews say?

5 questions · 5 findings · 3 reviews · Oral Health

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No studies found 0 · 0%GRADE not reported 4 · 80%Very low 0 · 0%Low 1 · 20%Moderate 0 · 0%High 0 · 0%

Country-level edentulism prevalence (Global Burden of Disease) vs Low vs high edentulism prevalence

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

OHRQoL did not differ significantly by country-level edentulism prevalence; no pooled estimate was reported in the text (ungraded).

1 finding from 1 review

Association between oral health-related quality of life and structural determinants of health among elderly… 2025 All outcomes
Community-dwelling older adults across 25 countries · Across edentulism prevalence categories
No statistically significant difference in OHRQoL based on edentulism prevalence (Fig. 4c).
Studies not reported
GRADE not reported

Country-level dental caries prevalence (Global Burden of Disease) vs Low vs high dental caries prevalence

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

Lower country-level dental caries prevalence was associated with better OHRQoL (low-prevalence pooled mean 81.5, 95% CI 76.5 to 86.6, higher than high-prevalence countries); statistically significant (ungraded).

1 finding from 1 review

Association between oral health-related quality of life and structural determinants of health among elderly… 2025 All outcomes
Community-dwelling older adults across 25 countries · Low dental caries prevalence
MEAN 81.5 [76.5, 86.6]
Studies not reported
GRADE not reported

Country-level periodontal disease prevalence (Global Burden of Disease) vs Low vs high periodontal disease prevalence

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

OHRQoL did not differ significantly by country-level periodontal disease prevalence; no pooled estimate was reported in the text (ungraded).

1 finding from 1 review

Association between oral health-related quality of life and structural determinants of health among elderly… 2025 All outcomes
Community-dwelling older adults across 25 countries · Across periodontal disease prevalence categories
No statistically significant difference in OHRQoL based on periodontal disease prevalence (Fig. 4b).
Studies not reported
GRADE not reported

Periodontal disease (present) vs Individuals without periodontal disease (by LOA)

Poor oral health-related quality of life (OHRQoL) · Children aged 3-12 years

Periodontal disease was associated with higher odds of poor OHRQoL (OR 1.15, 95% CI 1.12-1.18; 3 studies; no heterogeneity; ungraded).

1 finding from 1 review

The Association of Oral Health Status, demographic characteristics and socioeconomic determinants with Oral… 2020 All outcomes
Upper-middle-income countries (Brazil); studies 2010-2014
OR 1.15 [1.12, 1.18]
3 studies
GRADE not reported

Theory-based oral health education/promotion interventions (HBM, TPB, SCT, HAPA, TTM, PMT, SOC, PRECEDE-PROCEED, MI) vs Control (waitlist, routine/standard oral health education, or minimal intervention)

Oral health-related quality of life · school‐age children and adolescents

Theory-based interventions significantly improved oral health-related quality of life (SMD 7.38; low certainty), with very high heterogeneity.

1 finding from 1 review

Health promotion theory-based educational interventions for improving oral health in children and adolescents: a… 2025 All outcomes
Post-intervention (follow-up 0.5 to 12 months, varies by study) · School-based and community settings; multiple countries (predominantly Iran; also Pakistan, Hong Kong, Lithuania, Thailand) · Overall
SMD 7.38 [5.57, 9.19]
4 studies · 4751 participants
Low