Stability: Little's Irregularity Index (lower arch) · People who had received fixed appliance orthodontic treatment
It is very uncertain whether CAD/CAM nitinol fixed (bonded) retainer changes stability: Little's Irregularity Index (lower arch) compared with conventional/analogue multistrand fixed (bonded) retainer (very low certainty).
1 finding from 1 review
Overall treatment time wearing orthodontic appliances · Adolescents and adults with malocclusion undergoing orthodontic treatment with fixed or removable appliances
Light vibrational forces (LVF) showed no clear difference in duration of orthodontic treatment compared with conventional orthodontic appliance treatment (placebo or no adjunct) (low certainty).
1 finding from 1 review
Total number of orthodontic appliance adjustment appointments during treatment · Adolescents and adults with malocclusion undergoing orthodontic treatment with fixed or removable appliances
Light vibrational forces (LVF) showed no clear difference in total number of orthodontic appliance adjustment appointments during… compared with conventional orthodontic appliance treatment (placebo or no adjunct) (low certainty).
1 finding from 1 review
Stability: Little's Irregularity Index (lower arch) · People who had received fixed appliance orthodontic treatment
It is very uncertain whether full-time wear of removable retainer (any type) changes stability: Little's Irregularity Index (lower arch) compared with part-time wear of removable retainer (any type) (very low certainty).
1 finding from 1 review
Stability: Little's Irregularity Index (lower arch) · People who had received fixed appliance orthodontic treatment
It is very uncertain whether full-time clear plastic (removable) retainer changes stability: Little's Irregularity Index (lower arch) compared with any type of fixed (bonded) retainer (very low certainty).
1 finding from 1 review
Duration of orthodontic treatment: alignment stage (mandibular arch) · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment
It is very uncertain whether light-emitting diode (LED) photobiomodulation changes duration of orthodontic treatment: alignment stage (mandibular arch) compared with conventional orthodontic appliance treatment (very low certainty).
1 finding from 1 review
Stability of crossbite correction (relapse of canine 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
Reported incidence or prevalence of root resorption of the impacted canine and/or incisors and/or first premolars · 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
Canine 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
Size of the lower jaw (arch length) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Lacebacks with fixed appliances showed no clear difference in size of the lower jaw (arch length) compared with fixed appliances only (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
Schwarz appliance showed no clear difference in size of the lower jaw (mandibular arch length, change) at 9 months compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Incidence of eruption of the PDC into the mouth · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)
Double primary (canine and first molar) tooth extraction led to higher incidence of eruption of the PDC into the mouth compared with single primary (canine) tooth extraction; GRADE not reported.
4 findings from 1 review
RR 1.28 [1.06, 1.54]
2 studies · 96 participants
GRADE not reported
RR 0.68 [0.35, 1.31]
3 studies · 119 participants
Very low
RR 0.61 [0.29, 1.25]
1 study · 23 participants
GRADE not reported
Show 1 more finding
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 nitinol archwire changes amount of crowding (change) up to 37 weeks compared with titinol archwire (very low certainty).
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
Active self-ligating brackets showed no clear difference in time to alignment (days) compared with passive self-ligating brackets; 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
1 finding from 1 review
Harms (discomfort, pain intensity, analgesia use) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
1 finding from 1 review
No clear difference in discomfort/pain intensity or analgesia consumption between vibrational appliance and control (Miles 2012, Miles 2016, Woodhouse 2015; 100 mm VAS). Narrative; no pooled estimate.
2 studies
GRADE not reported
Signs and symptoms of respiratory disease · 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
Effect of severity of PDC displacement towards the midline on the proportion of successful eruptions · Young people aged 9 to 14 years diagnosed with one or both palatally displaced permanent maxillary canines (PDC)
1 finding from 1 review
Crossbite correction · 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) leads to higher crossbite correction compared with observation (no treatment) (high certainty).
1 finding from 1 review
Crossbite correction · Children and adults with a posterior crossbite, without a Class III skeletal relationship, cleft lip or palate (or both), or other…
Fixed tooth-borne expansion (Hyrax) showed no clear difference in crossbite correction compared with fixed tooth-tissue-borne expansion (Haas) (moderate certainty).
1 finding from 1 review