Harms (orthodontically-induced inflammatory root resorption) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
1 finding from 1 review
Time for ligation (seconds, to ligate six brackets) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Self-ligating brackets led to lower time for ligation (seconds, to ligate six brackets) compared with conventional brackets; GRADE not reported.
1 finding from 1 review
Molar expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
Bone-borne expansion showed no clear difference in molar expansion (inter-molar distance) compared with fixed tooth-borne expansion (Hyrax) (low certainty).
1 finding from 1 review
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 Hyrax appliance followed by U-bow activator therapy showed no clear difference in molar expansion compared with no treatment; GRADE not reported.
1 finding from 1 review
Canine expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
Semi-rapid maxillary expansion showed no clear difference in canine expansion compared with rapid maxillary expansion; GRADE not reported.
1 finding from 1 review
Amount of crowding · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
It is very uncertain whether lacebacks with fixed appliances changes amount of crowding (change) at 6 months compared with fixed appliances only (control) (very low certainty).
1 finding from 1 review
Molar expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
Removable tooth-borne expansion (expansion plate) probably leads to higher molar expansion (inter-molar distance) compared with observation (no treatment) (moderate certainty).
1 finding from 1 review
Costs and cost‐effectiveness · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)
The review found no eligible studies for this question.
1 finding from 1 review
Harms (discomfort) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
1 finding from 1 review
Size of the lower jaw (arch length, change) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Extraction of third molars (wisdom teeth) led to higher size of the lower jaw (arch length, change) compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Molar expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
1 finding from 1 review
Signs and symptoms of temporomandibular joint dysfunction · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
0 studies
No studies found
Lower incisors to mandible (position, mm) at 9 months · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Lower lingual arch led to higher lower incisors to mandible at 1 year compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Size of the lower jaw (arch length, change) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Extraction of lower deciduous canines led to lower size of the lower jaw (arch length, change) at 1 year compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Molar expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
1 finding from 1 review
Lower incisors to mandible (position, mm) at 9 months · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Schwarz appliance led to higher lower incisors to mandible (position, mm) at 9 months compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Time to alignment · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Copper nickel-titanium archwire showed no clear difference in time to alignment (days) compared with nickel-titanium archwire; GRADE not reported.
1 finding from 1 review
Amount of crowding (upper anterior crowding) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
1 finding from 1 review
Time taken for the canine to erupt into the mouth · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
0 studies
No studies found
Canine expansion · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
Removable tooth-borne expansion (expansion plate) probably leads to higher canine expansion (inter-canine distance) compared with observation (no treatment) (moderate certainty).
1 finding from 1 review