The review found no eligible studies for this question.
The review found no eligible studies for this question.
Theory-based interventions significantly improved oral health-related quality of life (SMD 7.38; low certainty), with very high heterogeneity.
ART and placebo did not differ for oral health-related quality of life, based on an indirect network estimate with no direct trials (MD -0.01, 95% CI -0.40 to 0.38; ungraded).
Clinical examination with 24-month recall showed no clear difference in oral-health-related quality of life (OHIP-14) compared with clinical examination with 6-month recall (high certainty).
Clinical examination with risk-based recall showed no clear difference in oral-health-related quality of life (OHIP-14) compared with clinical examination with 24-month recall (high certainty).
Clinical examination with risk-based recall showed no clear difference in oral-health-related quality of life (OHIP-14) compared with clinical examination with 6-month recall (high certainty).
Children from low-income families had higher odds of poor OHRQoL (OR 1.16, 95% CI 1.11-1.21; 4 studies; ungraded).
A trim-and-fill sensitivity analysis pooling every exposure estimate gave an overall OR of 0.17 (95% CI 0.13-0.21) after correcting for significant publication bias (Fig. 13); this combined estimate spans heterogeneous exposures and is a publication-bias sensitivity result (ungraded).
Periodontal disease was associated with higher odds of poor OHRQoL (OR 1.15, 95% CI 1.12-1.18; 3 studies; no heterogeneity; ungraded).
Girls had modestly higher odds of poor OHRQoL than boys (OR 1.13, 95% CI 1.09-1.17; 3 studies; ungraded).
Higher dental caries experience was associated with substantially higher odds of poor OHRQoL (OR 1.66, 95% CI 1.43-1.88; 6 studies; high heterogeneity I2=83.5%; ungraded).
Orthodontic treatment need was associated with modestly higher odds of poor OHRQoL (OR 1.13, 95% CI 1.07-1.18; 3 studies; ungraded).
SDF did not significantly differ from placebo for oral health-related quality of life in children (MD 0.03, 95% CI -0.16 to 0.22; ungraded).
SDF did not significantly differ from atraumatic restorative treatment for oral health-related quality of life (MD 0.02, 95% CI -0.32 to 0.36; ungraded).
SDF plus fluoride varnish did not significantly differ from ART plus fluoride varnish for oral health-related quality of life (MD 0.16, 95% CI -0.1 to 0.42; ungraded).
SDF had no significant effect on oral health-related quality of life versus pooled standard-of-care caries treatments (SMD -0.06, 95% CI -0.20 to 0.08; ungraded).
OHRQoL did not differ significantly by country-level periodontal disease prevalence; no pooled estimate was reported in the text (ungraded).
Community-dwelling older adults in higher-income countries had better OHRQoL than those in lower-income countries (77.9, 95% CI 70.2 to 85.6 vs 66.9, 95% CI 56.7 to 77.0); the difference by income was statistically significant (ungraded).
Older adults in countries with relative income equality (low Gini index) had markedly higher OHRQoL (91.3, 95% CI 90.0 to 92.6) than those in less equal countries; the difference by Gini index was statistically significant (ungraded).