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%

Intervention not reported

Dental caries prevalence · General population in Ethiopia (all ages, age range 6-100 years)

Caries prevalence was highest in the Tigray region at 46.59% (95% CI 24.64 to 68.54); certainty not graded.

1 finding from 1 review

Intervention not reported

Dental caries prevalence · General population in Ethiopia (all ages, age range 6-100 years)

The pooled prevalence of dental caries in Ethiopia (2000-2020) was 40.98% (95% CI 31.62 to 50.34), with very high heterogeneity (I2=98.6%); certainty not graded.

1 finding from 1 review

COE with vital rinsing (toluidine blue/tolonium chloride) vs Conventional oral examination (COE) alone

Detection rate of oral pre-malignant and malignant lesions after referral (COE+vital rinsing vs COE alone) · Oral cavity cancer or potentially malignant disorder symptom-free individuals with tobacco habits

COE with vital rinsing (toluidine blue/tolonium chloride) showed no clear difference in detection rate of oral pre-malignant and malignant lesions after… compared with conventional oral examination (COE) alone (moderate certainty).

1 finding from 1 review

Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances

S. mutans presence · Adolescents/teenagers undergoing orthodontic treatment

A single study found no significant difference in S. mutans presence between aligners and fixed appliances in adolescents at 1 month (RR 0.86, 95% CI 0.64 to 1.14; ungraded).

1 finding from 1 review

Habit of tooth cleaning vs No habit of tooth cleaning

Dental caries · Individuals in Ethiopia assessed for dental caries

The habit of tooth cleaning was not significantly associated with dental caries (OR 0.71, 95% CI 0.17 to 2.96); certainty not graded.

1 finding from 1 review

Sweet food consumption (frequent) vs No/less frequent sweet food consumption

Dental caries · Individuals in Ethiopia assessed for dental caries

Sweet food consumption was associated with significantly higher odds of dental caries (OR 2.4, 95% CI 1.91 to 3.01); certainty not graded.

1 finding from 1 review

Utilization of dental services assessment (care/restorative index; dental visits) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year)

Dental service utilisation within the past year · Healthy Emirati preschool children in the United Arab Emirates

Utilization of dental services among healthy Emirati preschoolers was very low, with most children never having visited a dentist and very low care indices (narrative synthesis; not GRADE-rated).

1 finding from 1 review