Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,954 questions · 2,335 findings · 149 reviews · All outcomes

No studies found 436 · 18.7%GRADE not reported 1,370 · 58.7%Very low 254 · 10.9%Low 173 · 7.4%Moderate 80 · 3.4%High 22 · 0.9%

Food and nonalcoholic beverage marketing (exposure) vs No, less, or less powerful food marketing

Food preference · Children and adolescents (general population, aged under 20 years)

Food marketing was associated with increased food preference (pooled SMD, 0.30; combined evidence).

3 findings from 1 review

Food and nonalcoholic beverage marketing (exposure) vs No, less, or less powerful food marketing

Dental caries · Children and adolescents (general population, aged under 20 years)

Evidence on food marketing and dental caries is very uncertain (very low certainty); 1 of 2 studies found an association.

1 finding from 1 review

Food and nonalcoholic beverage marketing (exposure) vs No, less, or less powerful food marketing

Purchase requests · Children and adolescents (general population, aged under 20 years)

Nonrandomized evidence on purchase requests is very uncertain (very low certainty).

2 findings from 1 review

Food and nonalcoholic beverage marketing (exposure) vs No, less, or less powerful food marketing

Food choice · Children and adolescents (general population, aged under 20 years)

Food marketing probably increases children's choice of the marketed food (OR, 1.97; moderate certainty, RCTs).

3 findings from 1 review

Food and nonalcoholic beverage marketing (exposure) vs No, less, or less powerful food marketing

Food purchasing · Children and adolescents (general population, aged under 20 years)

Food marketing showed no clear association with food purchasing by or for children (very low certainty).

1 finding from 1 review

Food and nonalcoholic beverage marketing (exposure) vs No, less, or less powerful food marketing

Body weight / BMI · Children and adolescents (general population, aged under 20 years)

Evidence on food marketing and body weight is very uncertain (very low certainty); a single study found no association.

1 finding from 1 review

Food and nonalcoholic beverage marketing (exposure) vs No, less, or less powerful food marketing

Diet-related noncommunicable diseases · Children and adolescents (general population, aged under 20 years)

No eligible studies were found.

1 finding from 1 review

Absence (previous removal or agenesis) of asymptomatic disease-free impacted wisdom teeth vs Retention (conservative management) of asymptomatic disease-free impacted wisdom teeth

Caries affecting the (distal) adjacent second molar · Adults (416 healthy male volunteers aged 24 to 84 years) with asymptomatic disease-free impacted wisdom teeth

It is very uncertain whether absence (previous removal or agenesis) of asymptomatic disease-free… changes caries affecting the (distal) adjacent second molar compared with presence (retention) of asymptomatic disease-free impacted wisdom… (very low certainty).

2 findings from 1 review

Absence (previous removal or agenesis) of asymptomatic disease-free impacted wisdom teeth vs Retention (conservative management) of asymptomatic disease-free impacted wisdom teeth

Periodontitis (distal alveolar bone loss, adjacent second molar) · Adults (416 healthy male volunteers aged 24 to 84 years) with asymptomatic disease-free impacted wisdom teeth

It is very uncertain whether absence (previous removal or agenesis) of asymptomatic disease-free… changes periodontitis (distal alveolar bone loss, adjacent second molar) compared with presence (retention) of asymptomatic disease-free impacted wisdom… (very low certainty).

2 findings from 1 review

Absence (previous removal or agenesis) of asymptomatic disease-free impacted wisdom teeth vs Retention (conservative management) of asymptomatic disease-free impacted wisdom teeth

Periodontitis (distal probing depth greater than 4 mm, adjacent second molar) · Adults (416 healthy male volunteers aged 24 to 84 years) with asymptomatic disease-free impacted wisdom teeth

It is very uncertain whether absence (previous removal or agenesis) of asymptomatic disease-free… changes periodontitis (distal probing depth greater than 4 mm, adjacent… compared with presence (retention) of asymptomatic disease-free impacted wisdom… (very low certainty).

2 findings from 1 review

Gamified oral health interventions (mobile apps, serious games, augmented reality, game-based education) vs Conventional or traditional oral health education, or non-gamified interventions (comparator varied; several studies were single-arm/uncontrolled)

Adherence to oral hygiene routines by people with ID or their carers · Children or adolescents

Gamified interventions appear to increase children's engagement and adherence to oral hygiene routines, but the evidence is narrative and ungraded.

1 finding from 1 review
  • The Application of Gamification in Children's Oral Health Management: Systematic Review. 2025 All outcomes
    Post-intervention (predominantly short-term; long-term follow-up in a minority of studies) · School-based settings, specialized dental clinics, and home-based environments
    The regular use rate was significantly higher (72.4%) in the gamified mobile health app group than in the nongamified intervention group (48.3%) [Zolfaghari 2021]; quiz-based challenges in mobile apps encouraged higher…
    Studies not reported
    GRADE not reported

Enamel caries in primary dentition (at 5 years) vs Caries-free primary dentition

Dentinal caries in permanent (newly erupted) teeth · School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)

Enamel caries in the primary dentition is associated with about 1.6 times higher odds of dentinal caries in permanent teeth (single study; not GRADE-rated).

1 finding from 1 review

Dentinal caries in primary dentition (at 5 years) vs Caries-free primary dentition

Dentinal caries in permanent (newly erupted) teeth · School children and adolescents (6-18 years) followed from primary dentition (baseline examination before 72 months of age)

Dentinal caries in the primary dentition is associated with about 3.2 times higher odds of dentinal caries in permanent teeth (single study; not GRADE-rated).

1 finding from 1 review

CBT plus hypnosis (combined package) vs usual care

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · People aged 12 years and over with painful TMD lasting 3 months or longer

CBT plus hypnosis (combined package) led to lower pain intensity compared with usual care; GRADE not reported.

1 finding from 1 review

Toothpaste with a plaque-disclosing agent vs Conventional toothpaste

Gingivitis · Children aged 7 to 13 years with Down syndrome (mild to moderate ID); setting residential
1 finding from 1 review
  • Oral hygiene interventions for people with intellectual disabilities 2019 · Cochrane All outcomes
    Short term (<6 weeks)
    Toothpaste with a plaque-disclosing agent vs conventional toothpaste, children with Down syndrome. Ainamo & Bay Gingival Bleeding Index, mean 10 days; percent mean difference 18 (intervention) vs 8 (control), P<0.001…
    1 study · 40 participants
    Very low

Toothpaste with a plaque-disclosing agent vs Conventional toothpaste

Plaque · Children aged 7 to 13 years with Down syndrome (mild to moderate ID); setting residential
1 finding from 1 review
  • Oral hygiene interventions for people with intellectual disabilities 2019 · Cochrane All outcomes
    Short term (<6 weeks)
    Simplified Green & Vermillion Oral Hygiene Index (plaque), mean 10 days; percent mean difference 65 (intervention) vs 15 (control), P<0.0001 favouring the disclosing-agent toothpaste; 40 participants (SoF states 80,…
    1 study · 40 participants
    Very low

Growth stunting (linear growth retardation, low height-for-age) vs Children without growth stunting (normal height-for-age)

Early childhood caries (ECC) · Children aged ≤6 years (early childhood)

One Nigerian cross-sectional study reported a significant adjusted association between nutritional (stunting) status and ECC (APR 0.14, 95% CI 0.03-0.69); ungraded.

4 findings from 1 review
Show 1 more finding

Artificial bone graft: InFuse (collagen matrix) impregnated with rhBMP-2 vs Traditional iliac crest cancellous bone graft

Clinical assessment: alveolar ridge healing (0 to 3 grading scale) · Skeletally mature patients with unilateral cleft lip and palate and an alveolar cleft defect (>5 years; mean age 16.1 years)

Artificial bone graft: InFuse (collagen matrix) impregnated with… led to higher clinical assessment: alveolar ridge healing (0 to 3 grading scale) compared with traditional iliac crest cancellous bone graft; GRADE not reported.

1 finding from 1 review

Artificial bone graft: InFuse (collagen matrix) impregnated with rhBMP-2 vs Traditional iliac crest cancellous bone graft

Radiographic assessment: periapical film (0 to 3 grading scale) · Skeletally mature patients with unilateral cleft lip and palate and an alveolar cleft defect (>5 years; mean age 16.1 years)

Artificial bone graft: InFuse (collagen matrix) impregnated with… led to higher radiographic assessment: periapical film (0 to 3 grading scale) compared with traditional iliac crest cancellous bone graft; GRADE not reported.

1 finding from 1 review

Artificial bone graft: InFuse (collagen matrix) impregnated with rhBMP-2 vs Traditional iliac crest cancellous bone graft

Length of hospital stay · Skeletally mature patients with unilateral cleft lip and palate and an alveolar cleft defect (>5 years; mean age 16.1 years)

Artificial bone graft: InFuse (collagen matrix) impregnated with… led to lower length of hospital stay (days) compared with traditional iliac crest cancellous bone graft; GRADE not reported.

1 finding from 1 review