Odds of higher caries (DMFT) category · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)
Unemployment rate was not independently associated with DMFT category in the adjusted model (OR 0.99, 95% CI 0.44 to 2.23); not GRADE-rated.
1 finding from 1 review
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
Dental caries in children · Mother-child pairs
In one cross-sectional study, higher maternal allostatic load was associated with child dental caries experience and with health-related maternal care-taking behaviours; not pooled (ungraded).
1 finding from 1 review
Prevalence of untreated decay (% DT > 0) · Adults aged 25 years and older in Australia, Canada, New Zealand, and the United States
In Australia, low versus high income differed by 11.90 percentage points in prevalence of untreated decay.
5 findings from 1 review
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Mean number of decayed teeth (mean DT) · Adults aged 25 years and older in Australia, Canada, New Zealand, and the United States
Across four countries, low versus high income differed by 0.44 decayed teeth in mean number of decayed teeth (random-effects meta-analysis; I2=76.4%).
5 findings from 1 review
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Prevalence of fair/poor self-rated oral health · Adults aged 25 years and older in Australia, Canada, New Zealand, and the United States
Across four countries, low versus high income differed by 15.77 percentage points in prevalence of fair/poor self-rated oral health (random-effects meta-analysis; I2=13.4%).
5 findings from 1 review
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Severe early childhood caries · Children aged 5-6 years in Ajman schools
Low family income was associated with higher odds of severe early childhood caries.
1 finding from 1 review
Caries experience (mean DMFT) · 12-year-old children across European countries (national/regional epidemiological surveys, 2011-2022)
Mean DMFT tended to increase with unemployment rate (low 1.23, medium 2.08, high 2.38; ANOVA p<.05); descriptive country-level means only, not meta-analyzed or GRADE-rated.
3 findings from 1 review
Dental caries · School children in Dubai governmental schools
Mean DMFT was 2.66 in low socioeconomic-class schools versus 2.10 in high-class schools.
1 finding from 1 review
Poor oral health-related quality of life (OHRQoL) · Children aged 3-12 years
Children from low-income families had higher odds of poor OHRQoL (OR 1.16, 95% CI 1.11-1.21; 4 studies; ungraded).
1 finding from 1 review
OR 1.16 [1.11, 1.21]
4 studies
GRADE not reported
Early childhood caries (ECC) · Healthy children under 6 years in South Africa
No significant difference in caries odds was found between children of low- versus high-SES parents (meta-analysis reported no difference; pooled estimate in an unavailable supplementary figure; not GRADE-rated).
1 finding from 1 review
Dental caries · Healthy children and adolescents in the United Arab Emirates
Evidence on socioeconomic status/income and caries was inconsistent: some studies linked lower income to higher caries while others found no association (narrative synthesis; not GRADE-rated).
1 finding from 1 review
Findings were contradictory. Hashim et al. found children from low-income families had higher odds of severe early childhood caries (OR 1.43, 95% CI 1.11-1.85), and Ahmad et al. reported significantly higher DMFT in…
Studies not reported
GRADE not reported
Early childhood caries (ECC) · Healthy children under 6 years of age (6 months to 6 years); preschool children
After excluding an extreme outlier (Alhabdan 2018), the association between low brushing frequency and ECC remained statistically significant (pooled OR approximately 2.0, p=0.003; I2=87.5%); the exact estimate and its CI were not reported; ungraded.
2 findings from 1 review
Dental caries · Healthy children and adolescents in the United Arab Emirates
The association between parental education and caries was inconsistent; father's (but not consistently mother's) education was inversely associated with caries in some studies (narrative synthesis; not GRADE-rated).
1 finding from 1 review
Maternal education was not associated with children's caries in the Hashim et al. studies, whereas father's educational level was negatively associated with DMFT in Khadri et al. (secondary-aged children: -0.35, 95% CI…
Studies not reported
GRADE not reported
Poor oral health-related quality of life (OHRQoL) · Children aged 3-12 years
Lower maternal education was associated with poor OHRQoL (OR 1.12, 95% CI 1.00-1.23; 4 studies; high heterogeneity; CI lower bound at the null; ungraded).
1 finding from 1 review
OR 1.12 [1.00, 1.23]
4 studies
GRADE not reported
White spot lesion incidence · High caries-risk patients: fixed-orthodontic-appliance patients and children with partially erupted permanent molars
Low-power CO2 laser (LLLT) is associated with a lower incidence of new white spot lesions than placebo (OR 0.21, CI 0.15 to 0.30; ungraded, 3 RCTs, considerable heterogeneity I2=71%).
1 finding from 1 review
Salivary cortisol, cariogenic bacterial load and dental caries · Kindergarten-age children
In one cross-sectional study of children, low socioeconomic status, higher basal salivary cortisol and higher cariogenic bacterial counts were each independently associated with higher dental caries risk; not pooled (ungraded).
1 finding from 1 review
Systemic inflammation (C-reactive protein) and periodontal disease progression · General-population adults (German cohort)
In one 5-year longitudinal study, accumulation of low socioeconomic and behavioural factors was associated with greater periodontal disease progression and higher C-reactive protein; not pooled (ungraded).
1 finding from 1 review
Periodontitis and allostatic load · US adults in NHANES III
Allostatic load partly explained socioeconomic gradients in periodontal disease.
1 finding from 1 review
no estimate extracted
1 study
GRADE not reported
Caries experience (mean DMFT) · Adults aged 19-60 years
Populations with a higher proportion of people with low socioeconomic status had higher caries experience (pooled DMFT 15.99 vs 5.50), and meta-regression associated low SES with higher DMFT (about 10.35 more DMFT per unit; p=0.050); ungraded observational evidence.
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