Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

36 questions · 52 findings · 8 reviews · Orthodontics

No studies found 20 · 38.5%GRADE not reported 21 · 40.4%Very low 8 · 15.4%Low 3 · 5.8%Moderate 0 · 0%High 0 · 0%

Vibratory stimulation (vibratory adjuncts) vs No vibration or placebo vibration

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · Adolescents and adults undergoing orthodontic treatment

Vibratory stimulation (vibratory adjuncts) showed no clear difference in patient‐reported pain intensity or pain relief (VAS, NRS or… compared with no vibration or placebo vibration; GRADE not reported.

5 findings from 1 review
Show 2 more findings

Brain wave music (BWM) vs No special instructions (control)

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · Adults undergoing orthodontic treatment

Brain wave music (BWM) showed no clear difference in patient‐reported pain intensity or pain relief (VAS, NRS or… compared with no special instructions (control); GRADE not reported.

3 findings 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

Facemask with rapid maxillary expansion (RME) vs Facemask with alternating rapid maxillary expansion and constriction (Alt-RAMEC)

ANB · Children and adolescents (aged 16 years or younger) with prominent lower front teeth (Class III malocclusion)

Facemask with rapid maxillary expansion (RME) showed no clear difference in ANB compared with facemask with alternating rapid maxillary expansion and constriction… (low certainty).

1 finding from 1 review

Facemask with rapid maxillary expansion (RME) vs Facemask with alternating rapid maxillary expansion and constriction (Alt-RAMEC)

Overjet · Children and adolescents (aged 16 years or younger) with prominent lower front teeth (Class III malocclusion)

The review found no eligible studies for this question.

1 finding from 1 review

Facemask with rapid maxillary expansion (RME) vs Facemask with alternating rapid maxillary expansion and constriction (Alt-RAMEC)

A-Nasion perpendicular (A-NPerp) · Children and adolescents (aged 16 years or younger) with prominent lower front teeth (Class III malocclusion)

Facemask with rapid maxillary expansion (RME) led to higher A-Nasion perpendicular (A-NPerp) compared with facemask with alternating rapid maxillary expansion and constriction…; GRADE not reported.

1 finding from 1 review

Facemask with rapid maxillary expansion (RME) vs Facemask with alternating rapid maxillary expansion and constriction (Alt-RAMEC)

Wits appraisal · Children and adolescents (aged 16 years or younger) with prominent lower front teeth (Class III malocclusion)

Facemask with rapid maxillary expansion (RME) showed no clear difference in wits appraisal compared with facemask with alternating rapid maxillary expansion and constriction…; GRADE not reported.

1 finding from 1 review

Activator functional appliance vs Prefabricated functional myobrace appliance (PFA)

Final overjet · Adolescents (age 12 to 16 years) receiving orthodontic treatment to correct prominent upper front teeth (Class II malocclusion)

Activator functional appliance showed no clear difference in final overjet compared with prefabricated functional myobrace appliance (PFA); GRADE not reported.

1 finding from 1 review

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Damage to the teeth (e.g. tooth decay) · 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

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Bond failure rate · Children and adults with fixed orthodontic brackets bonded to incisors, canines and premolars

Self etching primers (one-step etchant and primer system) showed no clear difference in bond failure rate compared with conventional etchants (two-step etch and prime method using 37%… (low certainty).

1 finding from 1 review

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Participant satisfaction · 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

Self etching primer (one-step etchant-and-primer technique) vs Conventional etchants (two-step etch and prime method using 37% phosphoric acid)

Decay (decalcification) associated with or around the etching field · Children and adults with fixed orthodontic brackets bonded to incisors, canines and premolars
1 finding from 1 review
  • Decay (decalcification) associated with or around the etching field: Only one study (Ghiz 2009) assessed this outcome but data were reported at the tooth level rather than at the participant level and therefore was not…
    1 study · 25 participants
    GRADE not reported

Orthodontic treatment with appliances inducing stable, permanent orthodontic tooth movement (splints worn 8 to 12 weeks and surgical interventions excluded) vs Control: no treatment, placebo, or reassurance

Development of TMD (onset/incidence of signs and symptoms) · People without TMD at baseline undergoing orthodontic treatment (TMD clinically absent at baseline); no age restriction provided follow-up…

The review found no eligible studies for this question.

1 finding from 1 review