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Evidence found and GRADE certainty

3,323 questions · 5,762 findings · 263 reviews · Dental caries

No studies found 321 · 5.6%GRADE not reported 4,450 · 77.2%Very low 455 · 7.9%Low 297 · 5.2%Moderate 200 · 3.5%High 39 · 0.7%

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Living with HIV and undergoing antiretroviral therapy (ART/HAART) vs Healthy HIV-negative controls

Ulcerative stomatitis · Children or adolescents

One study found significantly higher ulcerative stomatitis among CLWH on ART (OR 28.59, 95% CI 1.67 to 490.32), though the estimate is very imprecise.

1 finding from 1 review

Consumption of xylitol chewing gum by women (mothers) vs No chewing gum

Plaque · Adults and children (predominantly adults; one study in children), with natural dentition

Xylitol sugar-free gum significantly reduced plaque quantity versus no-gum/control (SMD -0.743, 95% CI -1.148 to -0.338), with high heterogeneity (I2 = 86.0%; ungraded).

1 finding from 1 review

Mixed breast- and bottle-feeding vs Bottle feeding

Early childhood caries (ECC) · Healthy children under 6 years in South Africa

No significant difference in caries odds was found between mixed breast-and-bottle-fed and bottle-fed-only children (meta-analysis reported no difference; pooled estimate in an unavailable supplementary figure; not GRADE-rated).

1 finding from 1 review

Ion-releasing restoration, glass ionomer-based (conventional GIC, HV-GIC, RMGIC, glass hybrid) vs Resin composite restoration

Secondary caries · Patients with permanent dentition in need of restorations (all cavity types: Black's Class I, II, V, and non-carious cervical lesions)

Pooled across follow-up periods, ion-releasing (GIC) and resin composite restorations show no significant difference in secondary caries (RD -0.00, 95% CI -0.01 to 0.00; not separately GRADE-rated).

6 findings from 1 review
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Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs usual practice

Plaque index (PI) / oral hygiene · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs)

School-based interventions may reduce dental plaque scores (SMD -0.32, favouring intervention), but the certainty of evidence is very low.

1 finding from 1 review

Genetically predicted gene expression (TWAS; S-PrediXcan with GTEx v8 cis-eQTL across 49 tissues; cross-tissue S-MultiXcan) vs ECC-unaffected children (association of genetically predicted expression)

Early childhood caries (ECC) - association with genetically predicted expression of TAS2R43 (chr12p13.2) · Children up to age 5-6 years (European / European non-Hispanic ancestry); 843 ECC-affected vs 2124 unaffected across 5 cohorts (N=2974)

Genetically predicted expression of TAS2R43 was significantly associated with ECC in the TWAS (p = 8.78e-8); genetic association, ungraded.

1 finding from 1 review

Dental caries (carious oral microbiome) vs Caries-free / healthy oral microbiome

Differential microbial abundance / taxa predictive of caries · Individuals providing oral (saliva/supragingival plaque) 16S rRNA microbiome samples; 2016 samples from 19 studies (mixed children and…

A group of genera/species (notably Selenomonas, Aggregatibacter, Actinomyces, Treponema) was predictive of caries, whereas Streptococcus was not (ungraded).

1 finding from 1 review
  • Meta-analysis of caries microbiome studies can improve upon disease prediction outcomes. 2022 All outcomes
    Oral cavity microbiome (saliva and supragingival plaque samples); pooled across 19 international studies
    Mean-decrease-accuracy discriminating taxa: Capnocytophaga HMT-338, Lactobacillus panis, Treponema HMT-230, Bifidobacterium longum, Delftia acidovorans, Staphylococcus schleiferi; higher log2FC in caries: Selenomonas HMT-146, Aggregatibacter actinomycetemcomitans, Actinomyces HMT-896, Treponema HMT-257; Streptococcus not predictive
    19 studies · 2016 participants
    GRADE not reported

Composite resin vs Light-cured compomer (polyacid-modified composite resin)

Restoration failure · Children with carious primary teeth after vital or non-vital pulp therapy

In one RCT, composite resin had an annual failure rate of 0% after 2 years.

1 finding from 1 review

Fluoride-releasing resin-based sealant vs No sealant (control/no treatment)

Development of >=1 new carious lesion (caries incidence) · Children with caries-free or non-cavitated carious lesion primary molars, aged 3-7 years (paediatric department, dental hospital, France)
2 findings from 1 review

Non-responsive complementary feeding (NRCF) vs Other models of complementary feeding

Weight gain · Healthy, term-born, normal-birth-weight infants aged 4-24 months (breastfed and/or formula-fed) in Western industrialized countries

Narratively, restrictive NRCF style tended to favor excess weight and coercive/pressuring style tended to favor lower weight (3 of 5 studies each; ungraded).

1 finding from 1 review

Total daily fluoride intake (TDFI) and daily fluoride intake from toothpaste

Correlation between daily urinary fluoride excretion (DUFE) and fluoride intake · Children and adults with 24-h urinary fluoride monitoring (9 studies reporting both intake and urine; Table 2)

Daily urinary fluoride excretion was not correlated with total daily fluoride intake or with fluoride intake from toothpaste (R2 < 0.07), based on nine studies (ungraded).

1 finding from 1 review
  • Fluoride Intake Through Dental Care Products: A Systematic Review. 2022 All outcomes
    24-h urine collection · Multiple countries (28 studies; ~43% conducted in Brazil); community/general-population settings · High-fluoride-area data from Idowu et al. [46,47] excluded
    R2 (coefficient of determination) <0.07
    9 studies
    GRADE not reported

Not applicable (single-group prevalence) vs Not applicable

Dental caries prevalence · Children aged 12 years (plus or minus one year) in Africa

The pooled dental-caries prevalence was 0.3657 (95% CI 0.3065 to 0.4250); GRADE was not reported.

2 findings from 1 review

Genetically predicted gene expression (TWAS; S-PrediXcan with GTEx v8 cis-eQTL across 49 tissues; cross-tissue S-MultiXcan) vs ECC-unaffected children (association of genetically predicted expression)

Early childhood caries (ECC) - association with genetically predicted expression of SMIM10L1 (chr12p13.2) · Children up to age 5-6 years (European / European non-Hispanic ancestry); 843 ECC-affected vs 2124 unaffected across 5 cohorts (N=2974)

Genetically predicted expression of SMIM10L1 was significantly associated with ECC in the TWAS (p = 1.70e-7); genetic association, ungraded.

1 finding from 1 review

Dental caries (carious oral microbiome) vs Caries-free / healthy oral microbiome

Alpha diversity (Chao1, Observed, Shannon) · Adults providing oral (saliva/supragingival plaque) 16S rRNA microbiome samples

In adults, caries-vs-health alpha diversity differed for the Shannon index but not Chao1/Observed (ungraded).

1 finding from 1 review