Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

821 questions · 993 findings · 80 reviews · Dental caries

No studies found 60 · 6%GRADE not reported 749 · 75.4%Very low 109 · 11%Low 41 · 4.1%Moderate 34 · 3.4%High 0 · 0%

Periodontitis vs No periodontitis (periodontal health or gingivitis)

Lacunar stroke · adults

Individuals with periodontitis had about five times higher odds of lacunar stroke than those without periodontitis (pooled OR 5.16); ungraded cross-sectional evidence, with the caution that the three studies came from one research team.

1 finding from 1 review

Anorexia nervosa (as exposure; diagnosed by DSM-III/III-R/IV/V) vs Healthy controls

Plaque · Patients with anorexia nervosa aged >=12 years (mean age ~18.4; entirely female in reported data), general community-dwelling population

Anorexia nervosa patients tended to have higher plaque accumulation than healthy controls (significant in 2 of 3 studies), but results were not pooled or graded (ungraded).

1 finding from 1 review

High dental-caries prevalence vs Not applicable

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

The review reported higher OHRQoL in the low than high dental-caries-prevalence category.

1 finding from 1 review

Anorexia nervosa (as exposure; diagnosed by DSM-III/III-R/IV/V) vs Healthy controls

Caries experience · Patients with anorexia nervosa aged >=12 years (mean age ~18.4; entirely female in reported data), general community-dwelling population

Anorexia nervosa is associated with significantly higher caries experience (DMFT) than healthy controls (MD 2.00 teeth, 95% CI 0.87 to 3.13; low certainty).

1 finding from 1 review

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

Ever utilised dental services · Adult residents of slums and non-slum urban settings of LMICs

Ever-use of dental services is low-to-moderate (17%-71%) and generally lower in slum/rural groups; ungraded.

1 finding from 1 review

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

Periodontal disease prevalence · Adult residents of slums and non-slum urban settings of LMICs

Periodontal disease prevalence is high (23%-99%) across LMIC urban/slum populations; ungraded.

1 finding from 1 review

Teledentistry (index test): dental caries diagnosis from photographs taken with DSLR or smartphone cameras; store-and-forward vs Visual or clinical examination

Intra-examiner reliability · Children and adults with primary or permanent dentition undergoing dental caries assessment

Intra-examiner reliability ranged from kappa 0.52 to 1.00 across 6 studies; certainty not graded.

1 finding from 1 review

Not applicable (single-group prevalence) vs Not applicable (single-group prevalence)

Dental caries prevalence · Children (<18 years) with intellectual and developmental disabilities (IDD) in India

Dental caries affects about 64% of children with IDD in India (pooled prevalence 0.64, 95% CI 0.45-0.79; high heterogeneity; ungraded).

1 finding from 1 review

Not applicable (single-group prevalence) vs Not applicable (single-group prevalence)

Periodontal disease prevalence · Children (<18 years) with intellectual and developmental disabilities (IDD) in India

In the single study reporting it, periodontal disease prevalence was 54.2% (single study; ungraded).

1 finding from 1 review

Milk-based probiotic vs placebo or control

Plaque index (PI) / oral hygiene · Children and/or adolescents (<18 years) without background systemic disease

In a subgroup analysis, milk-based probiotics reduced the bacterial plaque index more than other presentations (MD -0.10, 95%CI -0.20 to -0.00; p-interaction=0.01); not GRADE-rated.

1 finding from 1 review

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

Dental service utilisation within the past year · Adult residents of slums and non-slum urban settings of LMICs

Past-year dental service use varies widely (4%-72%); ungraded.

1 finding from 1 review

Slum residence vs Non-slum urban setting

Dental caries · Adult residents of slums and non-slum urban settings of LMICs

Slum residents had non-significantly higher odds of caries than non-slum residents (OR 1.21, 95% CI 0.94-1.56; single study); ungraded.

1 finding from 1 review

Not applicable (single-group prevalence) vs Not applicable (single-group prevalence)

Regular toothbrushing usage (prevalence) · Children (<18 years) with intellectual and developmental disabilities (IDD) in India

About 91% of children with IDD in India use a toothbrush regularly (pooled prevalence 0.91, 95% CI 0.80-0.96; high heterogeneity; ungraded).

1 finding from 1 review

Probiotics vs placebo or control

Dental caries in children · Adolescents (12-18 years) without background systemic disease

In a subgroup analysis, probiotics reduced the number of caries in adolescents (MD -0.60, 95%CI -0.92 to -0.28; p-interaction=0.02); not GRADE-rated.

1 finding from 1 review