Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

91 questions · 96 findings · 9 reviews · Oral Health

No studies found 11 · 11.5%GRADE not reported 58 · 60.4%Very low 21 · 21.9%Low 5 · 5.2%Moderate 1 · 1%High 0 · 0%

One-to-one dietary intervention aimed at preventing tooth erosion (e.g., reducing consumption of acidic/carbonated drinks) vs No dietary advice, or different dietary advice

Dental erosion / tooth wear (tooth wear indices) · Participants of any age receiving one-to-one dietary advice in a dental setting

The review found no eligible studies for this question.

1 finding from 1 review

Primary school-based behavioural intervention (both oral hygiene and dietary components) vs No treatment (or delayed treatment)

Plaque · Children aged 4 to 12 years attending primary school

Primary school-based behavioural intervention (both oral hygiene and… showed no clear difference in plaque indices (permanent and deciduous teeth) compared with no intervention or delayed intervention (non-intervention control;… (low certainty).

1 finding from 1 review
  • SoF (Plaque indices, follow-up 3 to 15 months): 'All 3 RCTs showed a reduction in plaque in the intervention group compared to control group'; 827 participants (3 RCTs); GRADE low; comment 'Data not suitable for…
    3 studies · 827 participants
    Low

Primary school-based behavioural intervention (both oral hygiene and dietary components) vs No treatment (or delayed treatment)

Change in oral health knowledge and skills · Children aged 4 to 12 years attending primary school
1 finding from 1 review

Primary school-based behavioural intervention (both oral hygiene and dietary components) vs No treatment (or delayed treatment)

Changes in dental attendance · Children aged 4 to 12 years attending primary school
1 finding from 1 review

Primary school-based behavioural intervention (both oral hygiene and dietary components) vs No treatment (or delayed treatment)

Behavioural outcomes (reported and/or other measures, e.g. data tracking toothbrushes and collecting food wrappers) · Children aged 4 to 12 years attending primary school

The review found no eligible studies for this question.

1 finding from 1 review

Primary school-based behavioural intervention (both oral hygiene and dietary components) vs No treatment (or delayed treatment)

Frequency of cariogenic food and drink consumption · Children aged 4 to 12 years attending primary school
1 finding from 1 review

Primary school-based behavioural intervention (both oral hygiene and dietary components) vs No treatment (or delayed treatment)

Frequency of toothbrushing · Children aged 4 to 12 years attending primary school
1 finding from 1 review

Any topical or systemic intervention (topical/systemic steroids, ciclosporin, tacrolimus, retinoids, anti-malarials, biologics, phototherapy, surgery) vs Placebo, no treatment, another active intervention, or a different dose of the same intervention

Eating a normally varied diet · People of any age with erosive lichen planus affecting the oral, anogenital, and/or oesophageal regions

The review found no eligible studies for this question.

1 finding from 1 review

Individually designed, patient-centred preventive programme: dietary counselling (snacking timing, regular meals, fermentable carbohydrates) plus toothbrushing counselling, delivered by trained dental hygienists (a multi-intervention) vs Basic prevention offered as standard in public dental clinics

Nibbling less than daily · Children aged 11 to 12 years with at least one active initial caries lesion, screened in a town in Finland
1 finding from 1 review

Individually designed, patient-centred preventive programme: dietary counselling (snacking timing, regular meals, fermentable carbohydrates) plus toothbrushing counselling, delivered by trained dental hygienists (a multi-intervention) vs Basic prevention offered as standard in public dental clinics

Eating candy less than daily · Children aged 11 to 12 years with at least one active initial caries lesion, screened in a town in Finland
1 finding from 1 review

Individually designed, patient-centred preventive programme: dietary counselling (snacking timing, regular meals, fermentable carbohydrates) plus toothbrushing counselling, delivered by trained dental hygienists (a multi-intervention) vs Basic prevention offered as standard in public dental clinics

Drinking soft drinks less than daily · Children aged 11 to 12 years with at least one active initial caries lesion, screened in a town in Finland
1 finding from 1 review

Individually designed, patient-centred preventive programme: dietary counselling (snacking timing, regular meals, fermentable carbohydrates) plus toothbrushing counselling, delivered by trained dental hygienists (a multi-intervention) vs Basic prevention offered as standard in public dental clinics

Caries increment on tooth surfaces (dmfs/DMFS) (prevented fraction) · Children aged 11 to 12 years with at least one active initial caries lesion, screened in a town in Finland
2 findings from 1 review

Individually designed, patient-centred preventive programme: dietary counselling (snacking timing, regular meals, fermentable carbohydrates) plus toothbrushing counselling, delivered by trained dental hygienists (a multi-intervention) vs Basic prevention offered as standard in public dental clinics

Eating healthy snacks at least twice per day · Children aged 11 to 12 years with at least one active initial caries lesion, screened in a town in Finland
1 finding from 1 review

Individually designed, patient-centred preventive programme: dietary counselling (snacking timing, regular meals, fermentable carbohydrates) plus toothbrushing counselling, delivered by trained dental hygienists (a multi-intervention) vs Basic prevention offered as standard in public dental clinics

Eating warm meals more than twice per day · Children aged 11 to 12 years with at least one active initial caries lesion, screened in a town in Finland
1 finding from 1 review

Individually designed, patient-centred preventive programme: dietary counselling (snacking timing, regular meals, fermentable carbohydrates) plus toothbrushing counselling, delivered by trained dental hygienists (a multi-intervention) vs Basic prevention offered as standard in public dental clinics

Drinking sports drinks no more than once per week · Children aged 11 to 12 years with at least one active initial caries lesion, screened in a town in Finland
1 finding from 1 review

Individually designed, patient-centred preventive programme: dietary counselling (snacking timing, regular meals, fermentable carbohydrates) plus toothbrushing counselling, delivered by trained dental hygienists (a multi-intervention) vs Basic prevention offered as standard in public dental clinics

Using xylitol products more than 3 times per day · Children aged 11 to 12 years with at least one active initial caries lesion, screened in a town in Finland

Individually designed, patient-centred preventive programme: dietary… led to higher using xylitol products more than 3 times per day compared with basic prevention offered as standard in public dental clinics; GRADE not reported.

1 finding 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)

Oral hygiene behavior (brushing habits, preventive dental visits, dietary choices) · Children or adolescents

Gamified interventions appear to improve oral hygiene behaviors (brushing habits, preventive dental visits) in children, 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
    A gesture-based motion-capture game enhanced brushing independence and skill retention (P<.001) [Kang 2021]; 58.8% of caregivers reported their children brushed more often when using gamified applications [France…
    Studies not reported
    GRADE not reported