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 extraction of third molars (wisdom teeth) changes amount of crowding (Little's Irregularity Index, change) at 5 years compared with no active treatment (control) (very low certainty).
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
Lower lingual arch led to higher size of the lower jaw (mandibular arch length) at 1 year compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Lower incisor inclination (lingual tipping and retrusion) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Extraction of lower deciduous canines showed no clear difference in lower incisors to mandible (inclination, degrees) at 1 year compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Position of the incisors (upper incisor inclination) · 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 upper incisors to maxilla (inclination, degrees) at 9 months compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Amount of crowding (number of children with crowding, mandible) after 1 year · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
It is very uncertain whether eruption guidance appliance changes amount of crowding (number of children with crowding, mandible)… compared with no active treatment (control) (very low certainty).
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 extraction of lower deciduous canines changes amount of crowding (lower incisor crowding, change) at 1-2 years compared with no active treatment (control) (very low certainty).
1 finding from 1 review
Lower molars to mandible (relationship of lower back teeth to the mandible) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Lower lip bumper led to lower lower molars to mandible at 6 months 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 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
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
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
Lower molars to mandible (relationship of lower back teeth to the mandible) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth
Lower lingual arch led to lower lower molars to mandible at 1 year compared with no active treatment (control); GRADE not reported.
1 finding from 1 review
Cost-benefit consideration · Participants who previously underwent orthodontic treatment, with subsequent crowding (relapse) of the lower front teeth (lower incisors…
The review found no eligible studies for this question.
1 finding from 1 review
No RCTs met the inclusion criteria for this review. After deduplication, the electronic searching identified 527 publications; after reviewing the titles and abstracts, none focused on interventions to correct the…
0 studies
No studies found
Patient discomfort · Participants who previously underwent orthodontic treatment, with subsequent crowding (relapse) of the lower front teeth (lower incisors…
The review found no eligible studies for this question.
1 finding from 1 review
No RCTs met the inclusion criteria for this review. After deduplication, the electronic searching identified 527 publications; after reviewing the titles and abstracts, none focused on interventions to correct the…
0 studies
No studies found
Stability of the correction · Participants who previously underwent orthodontic treatment, with subsequent crowding (relapse) of the lower front teeth (lower incisors…
The review found no eligible studies for this question.
1 finding from 1 review
No RCTs met the inclusion criteria for this review. After deduplication, the electronic searching identified 527 publications; after reviewing the titles and abstracts, none focused on interventions to correct the…
0 studies
No studies found
Quality of life · Participants who previously underwent orthodontic treatment, with subsequent crowding (relapse) of the lower front teeth (lower incisors…
The review found no eligible studies for this question.
1 finding from 1 review
No RCTs met the inclusion criteria for this review. After deduplication, the electronic searching identified 527 publications; after reviewing the titles and abstracts, none focused on interventions to correct the…
0 studies
No studies found
Adverse effects including pain, gingivitis, enamel decalcification and root resorption · Participants who previously underwent orthodontic treatment, with subsequent crowding (relapse) of the lower front teeth (lower incisors…
The review found no eligible studies for this question.
1 finding from 1 review
No RCTs met the inclusion criteria for this review. After deduplication, the electronic searching identified 527 publications; after reviewing the titles and abstracts, none focused on interventions to correct the…
0 studies
No studies found
Aesthetics · Participants who previously underwent orthodontic treatment, with subsequent crowding (relapse) of the lower front teeth (lower incisors…
The review found no eligible studies for this question.
1 finding from 1 review
No RCTs met the inclusion criteria for this review. After deduplication, the electronic searching identified 527 publications; after reviewing the titles and abstracts, none focused on interventions to correct the…
0 studies
No studies found
Assessment of the alignment of the lower front teeth using any method or index · Participants who previously underwent orthodontic treatment, with subsequent crowding (relapse) of the lower front teeth (lower incisors…
The review found no eligible studies for this question.
1 finding from 1 review
No RCTs met the inclusion criteria for this review. After deduplication, the electronic searching identified 527 publications; after reviewing the titles and abstracts, none focused on interventions to correct the…
0 studies
No studies found
new active or inactive carious lesions · Children with dental caries in permanent (first) molars
SDF had a 72% preventative fraction; no pooled estimate or GRADE rating was reported.
1 finding from 1 review