Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

47 questions · 53 findings · 6 reviews · Orthodontics · All outcomes

No studies found 37 · 69.8%GRADE not reported 4 · 7.5%Very low 6 · 11.3%Low 3 · 5.7%Moderate 3 · 5.7%High 0 · 0%

Any intervention to manage relapse: fixed options (labial braces, lingual braces, fixed lingual wire) or removable options (Hawley's retainer with spring elastomeric module, Bloore removable aligner, other Hawley's retainer modifications, Invisalign, Clearstep) vs no intervention or another intervention

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

Any intervention to manage relapse: fixed options (labial braces, lingual braces, fixed lingual wire) or removable options (Hawley's retainer with spring elastomeric module, Bloore removable aligner, other Hawley's retainer modifications, Invisalign, Clearstep) vs no intervention or another intervention

Treatment time · 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

Any intervention to manage relapse: fixed options (labial braces, lingual braces, fixed lingual wire) or removable options (Hawley's retainer with spring elastomeric module, Bloore removable aligner, other Hawley's retainer modifications, Invisalign, Clearstep) vs no intervention or another intervention

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

Any intervention to manage relapse: fixed options (labial braces, lingual braces, fixed lingual wire) or removable options (Hawley's retainer with spring elastomeric module, Bloore removable aligner, other Hawley's retainer modifications, Invisalign, Clearstep) vs no intervention or another intervention

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

Any intervention to manage relapse: fixed options (labial braces, lingual braces, fixed lingual wire) or removable options (Hawley's retainer with spring elastomeric module, Bloore removable aligner, other Hawley's retainer modifications, Invisalign, Clearstep) vs no intervention or another intervention

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

Any intervention to manage relapse: fixed options (labial braces, lingual braces, fixed lingual wire) or removable options (Hawley's retainer with spring elastomeric module, Bloore removable aligner, other Hawley's retainer modifications, Invisalign, Clearstep) vs no intervention or another intervention

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

Any intervention to manage relapse: fixed options (labial braces, lingual braces, fixed lingual wire) or removable options (Hawley's retainer with spring elastomeric module, Bloore removable aligner, other Hawley's retainer modifications, Invisalign, Clearstep) vs no intervention or another intervention

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

Any intervention to manage relapse: fixed options (labial braces, lingual braces, fixed lingual wire) or removable options (Hawley's retainer with spring elastomeric module, Bloore removable aligner, other Hawley's retainer modifications, Invisalign, Clearstep) vs no intervention or another intervention

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

Psychological intervention: structured telephone call (verbal follow‐up and reassurance) vs placebo or no intervention

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

The review found no eligible studies for this question.

1 finding from 1 review

Analgesic (any: NSAID, paracetamol, local anaesthetic or opioid) vs placebo or control

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

Analgesic (any: NSAID, paracetamol, local anaesthetic or opioid) probably leads to lower pain intensity (VAS 0-100 mm) compared with control (placebo or no treatment) (moderate certainty).

3 findings from 1 review

Analgesic (any: NSAID, paracetamol, local anaesthetic or opioid) vs placebo or control

Quality of life or participant satisfaction · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)
1 finding from 1 review

Analgesic (any: NSAID, paracetamol, local anaesthetic or opioid) vs placebo or control

Rescue analgesia · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)
1 finding from 1 review

Extraction of the primary (baby) canine (single primary tooth extraction) vs No extraction (non-intervention control)

Any other adverse effects of the interventions, such as gingival disease and demineralisation · 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

Any orthodontic and/or surgical treatment for Angle Class III malocclusion vs no intervention or another intervention

Correction of prominent lower front teeth / effectiveness of treatment (planned primary outcome) · Adults (16 years of age or older) with an Angle Class III malocclusion (prominent lower front teeth); people with syndromes, clefts or…

The review found no eligible studies for this question.

1 finding from 1 review
  • No included study measured the planned primary outcome. Discussion: 'The primary outcome proposed for this review was to evaluate the effectiveness of treatments for prognathism, but none of the studies conclusively…
    Studies not reported
    No studies found

Double primary (canine and first molar) tooth extraction vs Single primary (canine) tooth extraction

Any other adverse effects of the interventions, such as gingival disease and demineralisation · 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