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Evidence found and GRADE certainty

4 questions · 4 findings · 2 reviews · Orthodontics

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No studies found 1 · 25%GRADE not reported 3 · 75%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Fixed bonded acrylic splint expander vs no treatment

Molar expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…

Fixed bonded acrylic splint expander showed no clear difference in molar expansion (maxillary intermolar width) compared with no treatment; GRADE not reported.

1 finding from 1 review

Fixed bonded acrylic splint expander vs no treatment

Canine expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…

Fixed bonded acrylic splint expander showed no clear difference in canine expansion (maxillary intercanine width) compared with no treatment; GRADE not reported.

1 finding from 1 review

Different etching materials (phosphoric acid, polyacrylic acid, maleic acid, etc.), acid concentrations or etching times vs An alternative etching material, concentration or etching time

Outcome not reported · Children and adults with fixed orthodontic brackets bonded to incisors, canines and premolars

The review found no eligible studies for this question.

1 finding from 1 review
  • Enamel etching for bonding fixed orthodontic braces 2013 · Cochrane All outcomes
    We identified no eligible trial that examined the effects of conventional etchants with respect to different etching concentrations or etching times for the bonding of fixed orthodontic appliances. No eligible RCTs…
    Studies not reported
    No studies found

Fixed tooth-borne expansion (Hyrax) vs Bonded expander plate (acrylic)

Molar expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…

Fixed tooth-borne Hyrax expander showed no clear difference in molar expansion compared with bonded expander plate (acrylic); GRADE not reported.

1 finding from 1 review