What do systematic reviews say?

5 questions · 5 findings · 3 reviews · Oral Health

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No studies found 0 · 0%GRADE not reported 2 · 40%Very low 1 · 20%Low 2 · 40%Moderate 0 · 0%High 0 · 0%

Harvold Activator vs Frankel function regulator

Occlusion (net change in overjet, short term) · Adolescents (age 12 to 16 years) receiving orthodontic treatment to correct prominent upper front teeth (Class II malocclusion)

Harvold Activator led to lower overjet change compared with frankel function regulator; GRADE not reported.

1 finding from 1 review

Orthodontic treatment for prominent upper front teeth (Class II malocclusion) in children and adolescents 2018 · Cochrane All outcomes
End of orthodontic treatment
MD -2.93 [-5.37, -0.49]
1 study · 25 participants
GRADE not reported

Intraoral distalising appliance vs Headgear (extraoral appliance)

Overjet · Children and adolescents (aged 16 years or less at the start of treatment) undergoing orthodontic treatment to distalise upper first…

Intraoral distalising appliance may leads to higher change in overjet (mm) compared with headgear (extraoral appliance) (low certainty).

1 finding from 1 review

Orthodontic treatment for distalising upper first molars in children and adolescents 2013 · Cochrane All outcomes
MD 1.64 [1.26, 2.02]
2 studies · 70 participants
Low

Intraoral distalising appliance vs Another (different) intraoral distalising appliance

Overjet · Children and adolescents (aged 16 years or less at the start of treatment) undergoing orthodontic treatment to distalise upper first…

1 finding from 1 review

Orthodontic treatment for distalising upper first molars in children and adolescents 2013 · Cochrane All outcomes
SoF table 3. Assumed risk "Not estimated"; Corresponding risk "Not estimated"; Relative effect "Meta-analysis not appropriate". Quality: very low. Comment: "No pooled estimate due to different types of appliances used…
2 studies · 70 participants
Very low

Orthodontic distalising appliance (intraoral or extraoral) vs no intervention

Overjet · Children and adolescents (aged 16 years or less at the start of treatment) undergoing orthodontic treatment to distalise upper first…

1 finding from 1 review

Orthodontic treatment for distalising upper first molars in children and adolescents 2013 · Cochrane All outcomes
SoF table 1. Assumed risk "Not estimated"; Corresponding risk "Not estimated"; Relative effect "Meta-analysis not appropriate". Comment: "No pooled estimate due to different types of appliances (First Class and…
2 studies · 74 participants
Low

Orthodontic appliances (palatal crib) vs no treatment

Occlusion (net change in overjet, short term) · Children with a non-nutritive sucking habit (digit or pacifier)

1 finding from 1 review

Interventions for the cessation of non‐nutritive sucking habits in children 2015 · Cochrane All outcomes
Short term (3 months)
Table 1 (reduction in malocclusion), Villa 1997 (n=24), palatal crib vs no treatment: net change in overjet (mm) - no treatment 0.02; palatal crib -0.2; no statistically significant net change in overjet between…
1 study · 24 participants
GRADE not reported