Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

371 questions · 390 findings · 17 reviews · Orthodontics

No studies found 88 · 22.6%GRADE not reported 203 · 52.1%Very low 38 · 9.7%Low 38 · 9.7%Moderate 20 · 5.1%High 3 · 0.8%

Open surgical exposure vs Closed surgical exposure

Gum health: midpalatal gingival recession · People with maxillary palatally displaced (impacted) canines, unilateral or bilateral (children/adolescents; mean ages 14.2 to 17.5 years)

Open surgical exposure showed no clear difference in gum health: midpalatal gingival recession compared with closed surgical exposure; GRADE not reported.

1 finding from 1 review

Open surgical exposure vs Closed surgical exposure

Patient response: satisfaction with treatment (satisfactory vs unsatisfactory) · People with maxillary palatally displaced (impacted) canines, unilateral or bilateral (children/adolescents; mean ages 14.2 to 17.5 years)

Open surgical exposure showed no clear difference in patient response: satisfaction with treatment (satisfactory vs… compared with closed surgical exposure; GRADE not reported.

1 finding from 1 review

Open surgical exposure vs Closed surgical exposure

Aesthetics: canine rated as abnormal tooth colour · People with maxillary palatally displaced (impacted) canines, unilateral or bilateral (children/adolescents; mean ages 14.2 to 17.5 years)

Open surgical exposure showed no clear difference in aesthetics: canine rated as abnormal tooth colour compared with closed surgical exposure; GRADE not reported.

1 finding from 1 review

Open surgical exposure vs Closed surgical exposure

Success of surgery (eruption of the canine crown sufficient for orthodontic alignment, without repeated surgery) · People with maxillary palatally displaced (impacted) canines, unilateral or bilateral (children/adolescents; mean ages 14.2 to 17.5 years)

Open surgical exposure showed no clear difference in success of surgery (eruption of the canine crown sufficient for… compared with closed surgical exposure (low certainty).

1 finding from 1 review

Open surgical exposure vs Closed surgical exposure

Treatment time: length of time in the operating theatre (first incision to final suture) · People with maxillary palatally displaced (impacted) canines, unilateral or bilateral (children/adolescents; mean ages 14.2 to 17.5 years)

It is very uncertain whether open surgical exposure changes treatment time: length of time in the operating theatre (first… compared with closed surgical exposure (very low certainty).

1 finding from 1 review

Open surgical exposure vs Closed surgical exposure

Gum health: radiographic crestal bone level · People with maxillary palatally displaced (impacted) canines, unilateral or bilateral (children/adolescents; mean ages 14.2 to 17.5 years)

Open surgical exposure showed no clear difference in gum health: radiographic crestal bone level compared with closed surgical exposure; GRADE not reported.

1 finding from 1 review

Open surgical exposure vs Closed surgical exposure

Aesthetics of the treated canine compared with the untreated contralateral canine · People with maxillary palatally displaced (impacted) canines, unilateral or bilateral (children/adolescents; mean ages 14.2 to 17.5 years)
1 finding from 1 review

Open surgical exposure vs Closed surgical exposure

Clinical attachment level (CAL) · People with maxillary palatally displaced (impacted) canines, unilateral or bilateral (children/adolescents; mean ages 14.2 to 17.5 years)

Open surgical exposure showed no clear difference in gum health: clinical attachment level (CAL) compared with closed surgical exposure (low certainty).

1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Mandibular ramus growth · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…
1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Stability of anterior open bite correction (1 year after treatment) · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…

The review found no eligible studies for this question.

1 finding from 1 review

Frankel's function regulator-4 (FR-4) with lip-seal training vs no treatment

Reduction or treatment of obstructive sleep apnoea syndrome (OSAS) or upper airway resistance syndrome (UARS) · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…

The review found no eligible studies for this question.

1 finding from 1 review

Removable appliance with palatal crib associated with high-pull chincup vs no treatment

Mandibular ramus growth · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…
1 finding from 1 review
  • Orthodontic and orthopaedic treatment for anterior open bite in children 2014 · Cochrane All outcomes
    End of treatment (12 months)
    Cephalometric data (SNA, Co-A, SNB, Ar-Go, Ar.GoMe, Co-Gn, ANB) were reported to be not significantly different between groups; effects were dento-alveolar rather than skeletal. No pooled estimate (Almeida 2005).
    1 study
    GRADE not reported

Removable appliance with palatal crib associated with high-pull chincup vs no treatment

Alteration of hyperdivergent growth pattern · Children and adolescents (over 80% aged 16 years or younger at treatment start) with anterior open bite (lack of vertical overlap or…
1 finding from 1 review
  • Orthodontic and orthopaedic treatment for anterior open bite in children 2014 · Cochrane All outcomes
    End of treatment (12 months)
    The angles (SN.GoGN, SN.PP, NS.Gn) and linear measures (AFA, AFP, AFAI) did not demonstrate significant alterations between groups; interventions did not produce significant changes in the skeletal maxillary or…
    1 study
    GRADE not reported