Findings

What do systematic reviews say?

4 questions · 4 findings · 1 reviews · Orthodontics

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No studies found 1 · 25%GRADE not reported 1 · 25%Very low 0 · 0%Low 2 · 50%Moderate 0 · 0%High 0 · 0%

Twin Block functional appliance vs Other functional appliances (Bionator, Herbst, R-appliance, Dynamax, Bite-Jumping)

Final ANB · Adolescents (age 12 to 16 years) receiving orthodontic treatment to correct prominent upper front teeth (Class II malocclusion)

Twin Block functional appliance may leads to lower final ANB compared with other functional appliances (Bionator, Herbst, R-appliance, Dynamax,… (low certainty).

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 -0.56 [-0.96, -0.16]
6 studies · 320 participants
Low

Twin Block functional appliance vs Other functional appliances (Bionator, Herbst, R-appliance, Dynamax, Bite-Jumping)

Final overjet · Adolescents (age 12 to 16 years) receiving orthodontic treatment to correct prominent upper front teeth (Class II malocclusion)

Twin Block functional appliance showed no clear difference in final overjet compared with other functional appliances (Bionator, Herbst, R-appliance, Dynamax,… (low certainty).

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 0.08 [-0.6, 0.76]
4 studies · 259 participants
Low

Twin Block functional appliance vs Other functional appliances (Bionator, Herbst, R-appliance, Dynamax, Bite-Jumping)

Incidence of incisal trauma · Adolescents (age 12 to 16 years) receiving orthodontic treatment to correct prominent upper front teeth (Class II malocclusion)

The review found no eligible studies for this question.

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
Incidence of incisal trauma: Not measured
Studies not reported
No studies found

Twin Block functional appliance vs Modified Twin Block appliances

Final overjet · Adolescents (age 12 to 16 years) receiving orthodontic treatment to correct prominent upper front teeth (Class II malocclusion)

Twin Block functional appliance (conventional) showed no clear difference in final overjet compared with modified Twin Block appliances; 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 -0.23 [-0.67, 0.22]
2 studies · 196 participants
GRADE not reported