Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

762 questions · 830 findings · 43 reviews · Orthodontics

No studies found 186 · 22.4%GRADE not reported 410 · 49.4%Very low 122 · 14.7%Low 79 · 9.5%Moderate 30 · 3.6%High 3 · 0.4%

Chin cup (600 g force) vs Chin cup (300 g force)

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

Chin cup (600 g force) showed no clear difference in ANB compared with chin cup (300 g force); GRADE not reported.

1 finding from 1 review

Fixed orthodontic treatment with fixed (multibracket) appliances (exposure) vs None (single-group prevalence/incidence estimate)

Prevalence of ICLs (proportion of subjects affected) · Patients (permanent dentition) during or after fixed orthodontic treatment with fixed (multibracket) appliances

Around 57% of patients had ICLs during or after fixed orthodontic treatment (pooled prevalence 0.57, 95% CI 0.48-0.65; very low certainty; very high heterogeneity).

1 finding from 1 review

Facemask vs no intervention

Perceived need for surgery in adulthood · Children and adolescents (aged 16 years or younger) with prominent lower front teeth (Class III malocclusion)

Facemask may leads to higher perceived need for surgery in adulthood compared with untreated control (no treatment) (low certainty).

1 finding from 1 review

One-step adhesive bonding system (GC Ortho Connect) vs Conventional multi-step adhesive systems (three-step Transbond XT; self-etch primer Transbond Plus)

White spot lesion development (QLF: mineral loss, lesion area/depth, new lesions) · Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35)

A single RCT found the one-step adhesive without a primer (GC Ortho Connect) produced more and more severe white spot lesions than conventional multi-step systems (ungraded).

1 finding from 1 review

Clearfil Protect Bond antibacterial fluoride-releasing primer vs Conventional Transbond XT primer

Bracket (bond) failure · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

Clearfil Protect Bond showed no difference in bracket failure, with certainty not graded.

1 finding from 1 review

TiO2-modified composite (1 wt.%) vs Control composite in contralateral quadrant

Enamel demineralization (DIAGNOdent score) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

TiO2-modified composite favored lower DIAGNOdent scores, with certainty not graded.

1 finding from 1 review

Clear aligners (Invisalign / thermoformed aligners) vs Conventional orthodontic appliance treatment

Plaque · Orthodontic patients undergoing comprehensive treatment (late mixed or permanent dentition, no active caries)

In randomized trials, clear aligners probably reduce plaque accumulation versus fixed appliances, though the subgroup estimate is imprecise and its CI crosses no effect (SMD -1.79, 95% CI -3.63 to 0.04; moderate certainty).

6 findings from 1 review
Show 3 more findings

Part-time clear plastic (removable) retainer vs Any type of fixed (bonded) retainer

Adverse effects on oral health: Gingival Index (lower arch) · People who had received fixed appliance orthodontic treatment

It is very uncertain whether part-time clear plastic (removable) retainer changes adverse effects on oral health: Gingival Index (lower arch) compared with any type of fixed (bonded) retainer (very low certainty).

1 finding from 1 review

Fibre-reinforced composite fixed (bonded) retainer vs Multistrand / spiral wire fixed (bonded) retainer

Patient satisfaction (measured by patient satisfaction or aesthetic scales) · People who had received fixed appliance orthodontic treatment

It is very uncertain whether fibre-reinforced composite fixed (bonded) retainer changes patient satisfaction: aesthetics (VAS 0-10 cm, lower arch) compared with multistrand / spiral wire fixed (bonded) retainer (very low certainty).

1 finding from 1 review

Chlorhexidine mouthwash vs placebo

Cariogenic bacteria (Mutans streptococci) · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

Chlorhexidine mouthwash reduced Mutans streptococci versus placebo, but certainty is very low.

1 finding from 1 review

Malocclusion vs No malocclusion

Impaired OHRQoL measured with CPQ 11-14 (quantitative synthesis / meta-analysis) · Adolescents (10-19 years)

Malocclusion (DAI) probably increases the prevalence of impaired OHRQoL (CPQ 11-14) by about 15% in adolescents (RR/PR 1.15, 95% CI 1.12-1.18; moderate certainty).

1 finding from 1 review

Chlorhexidine mouthwash vs Blank control

Cariogenic bacteria (Mutans streptococci) · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

Chlorhexidine mouthwash reduced Mutans streptococci versus blank control, but certainty is very low.

1 finding from 1 review

Part-time clear plastic (removable) retainer vs Any type of fixed (bonded) retainer

Stability: Little's Irregularity Index (lower arch) · People who had received fixed appliance orthodontic treatment

It is very uncertain whether part-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

Upper clear plastic retainer + lower fixed canine-to-canine retainer vs Upper clear plastic retainer + lower interproximal reduction (adjunctive), no lower retainer

Stability: Little's Irregularity Index (lower arch) · People who had received fixed appliance orthodontic treatment

Upper clear plastic retainer + lower fixed canine-to-canine retainer showed no clear difference in stability: Little's Irregularity Index (lower arch) compared with upper clear plastic retainer + lower interproximal reduction…; GRADE not reported.

1 finding from 1 review