Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,890 questions · 3,917 findings · 272 reviews · All outcomes

No studies found 429 · 11%GRADE not reported 2,657 · 67.8%Very low 512 · 13.1%Low 219 · 5.6%Moderate 80 · 2%High 20 · 0.5%

Silver diamine fluoride (SDF) vs Fluoride varnish

Dental pain or sensitivity · Children and adults (with or without carious lesions)

It is very uncertain whether silver diamine fluoride (SDF) changes dental pain or sensitivity compared with fluoride varnish (very low certainty).

1 finding from 1 review

High intake of sweets vs Lower/less intake of sweets

Dental caries · Primary school children in Ethiopia

A high intake of sweets was associated with higher odds of dental caries (OR 2.71, 95% CI 1.968-3.451; ungraded).

1 finding from 1 review

Er:YAG laser irradiation of sound enamel before acid challenge vs No anticaries intervention (untreated enamel)

Enamel surface microhardness · Human tooth enamel specimens, sound/intact (in vitro)

In sound enamel, Er:YAG laser irradiation significantly increased surface microhardness after acid challenge versus untreated control (SMD 2.41, 95% CI 0.70 to 4.12; 3 in vitro studies; ungraded).

1 finding from 1 review

Silver diamine fluoride (SDF) plus fluoride varnish vs Sealants plus fluoride varnish (with or without restorations)

Adverse effects · Children and adults (with or without carious lesions)
1 finding from 1 review

Silver diamine fluoride (SDF) vs Restoration (restorative treatment)

Caries arrest · Children and adults (with or without carious lesions)

It is very uncertain whether silver diamine fluoride (SDF) changes caries arrest compared with restoration (restorative treatment) (very low certainty).

1 finding from 1 review

Silver diamine fluoride (SDF) vs Placebo, control, and/or other interventions

Caries arrestment at the individual (patient) level · Children and adults without systemic diseases affecting dental health

SDF showed a higher caries-arrestment proportion at the individual level, but the reported difference was not statistically significant.

1 finding from 1 review

Silver diamine fluoride (SDF) vs Glass ionomer cement (GIC) plus fluoride varnish

Adverse effects · Children and adults (with or without carious lesions)
1 finding from 1 review

Erbium:YAG laser vs Untreated / high-speed-handpiece control enamel

Enamel resistance to demineralization (microhardness / lesion depth) · Human enamel adjacent to restorations or in pits and fissures (in situ / ex vivo)

Er:YAG laser showed a mixed and limited effect on enamel resistance to demineralization: feasible for controlling progression around restorations but not preventing caries formation, and ineffective in pits and fissures (ungraded, 2 ex-vivo studies, no pooled estimate).

1 finding from 1 review

Silver diamine fluoride (SDF) vs Silver nitrate plus fluoride varnish

Adverse effects · Children and adults (with or without carious lesions)
1 finding from 1 review

CO2 laser combined with fluoride vs Fluorides alone (monotherapy)

Enamel demineralization (QLF ΔF) · Human enamel specimens under cariogenic challenge (in situ / ex vivo)

Evidence on a synergistic effect of combining CO2 laser with fluoride versus fluoride alone is mixed: one ex-vivo study found combined treatment superior while another found no synergy (ungraded, 2 ex-vivo studies, no pooled estimate).

1 finding from 1 review

Slum / urban-disadvantaged setting vs Non-slum urban / general-urban / national population

Pattern of dental service utilisation and barriers · Adult residents of slums and non-slum urban settings of LMICs

Dental service use is low, episodic and pain-driven, with widespread self-care and cost/funding barriers; ungraded.

1 finding from 1 review

Slum / urban-disadvantaged setting vs Non-slum urban / general-urban / national population

Frequency of mouth cleaning · Adult residents of slums and non-slum urban settings of LMICs

Twice-daily cleaning (recommended) is uncommon; most clean once, in the morning; ungraded.

1 finding from 1 review

Institutionalization (living in an orphanage/institution) vs Parented children living with their families

Mean DMFT (decayed, missing, filled permanent teeth) · Institutionalized orphan children (roughly 3 to 18 years)

Permanent-teeth caries experience (DMF) was marginally higher in institutionalized children but essentially similar to parented children (pooled MD 0.09, not significant; very low certainty).

1 finding from 1 review

Slum / urban-disadvantaged setting vs Non-slum urban / general-urban / national population

Oral disease burden, slum vs non-slum urban comparison · Adult residents of slums and non-slum urban settings of LMICs

Where compared, oral disease burden is generally higher in slums than non-slum urban/national populations (5 studies; 1 found no difference); ungraded.

1 finding from 1 review

Silver diamine fluoride (SDF) vs Restoration (restorative treatment)

Dental pain or sensitivity · Children and adults (with or without carious lesions)

It is very uncertain whether silver diamine fluoride (SDF) changes dental pain or sensitivity compared with restoration (restorative treatment) (very low certainty).

1 finding from 1 review

Cesarean section delivery vs Vaginal delivery

Early childhood caries (ECC) · Children with average age ≤3 years

No significant association between cesarean vs vaginal delivery and ECC among children with average age ≤3 years (OR 0.86, 95% CI 0.67-1.10).

1 finding from 1 review

Silver diamine fluoride (SDF) vs Glass ionomer cement (GIC) plus fluoride varnish

Caries arrest · Children and adults (with or without carious lesions)

It is very uncertain whether silver diamine fluoride (SDF) changes caries arrest compared with glass ionomer cement (GIC) plus fluoride varnish (very low certainty).

1 finding from 1 review

Sociodemographic and behavioural factors (older age, lower education, lower income, poor oral hygiene/brushing, smoking, disadvantaged/slum residence, sex) vs Referent groups (younger, higher education/income, better oral hygiene, non-slum residence)

Determinants of oral diseases · Adult residents of slums and non-slum urban settings of LMICs

Age, education, income, oral-hygiene behaviour, dental-visit pattern and slum/disadvantaged residence are associated with oral disease; gender effects are disease-specific; ungraded.

1 finding from 1 review

Primary teeth / primary dentition (younger children) vs Permanent teeth / permanent dentition (older children)

Dental caries susceptibility · Institutionalized orphan children (roughly 3 to 18 years)

Primary teeth may carry a higher caries risk than permanent teeth in institutionalized children (RR 1.31), but the difference is not statistically significant (very low certainty).

1 finding from 1 review