Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,317 questions · 75,239 findings · 5,342 reviews

No studies found 15,213 · 20.2%GRADE not reported 10,323 · 13.7%Very low 17,528 · 23.3%Low 17,951 · 23.9%Moderate 11,190 · 14.9%High 3,034 · 4%

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Light vibrational forces (LVF) vs Conventional orthodontic appliance treatment

Harms (orthodontically-induced inflammatory root resorption) · Adolescents and adults with malocclusion undergoing orthodontic treatment with fixed or removable appliances

Light vibrational forces (LVF) showed no clear difference in harms and side effects: orthodontically-induced inflammatory root… compared with conventional orthodontic appliance treatment (placebo or no adjunct) (low certainty).

1 finding from 1 review

Periodontal disease assessed by Community Periodontal Index (CPI) vs Individuals without periodontal disease (by CPI)

Oral health-related quality of life · Indian adults and elderly (general, police, teachers, institutionalised)

Evidence on periodontal disease (CPI) and OHRQoL is inconsistent across studies (very low certainty).

2 findings from 1 review

Gingivitis (assessed by gingival index or WHO criteria) vs Individuals without gingivitis

Oral health-related quality of life · Indians

Continuous analyses (GOHAI, OHIP-14) of gingivitis and OHRQoL were inconsistent and mostly non-significant; ungraded.

1 finding from 1 review

Fluoride mouthwash vs Blank control

Plaque · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

Long-term fluoride mouthwash showed mixed plaque-index effects, with very low-certainty evidence.

1 finding from 1 review

Mineral trioxide aggregate (MTA) vs Calcium hydroxide (CH)

Overall success (composite of clinical and radiographic success) · Patients with carious pulp exposure in immature permanent teeth

The effect of MTA versus CH in immature teeth is very uncertain (very low certainty).

1 finding from 1 review

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

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

The review found no eligible studies for this question.

1 finding from 1 review

Hawley removable retainer vs Clear plastic removable retainer

Survival of retainers (failure/how many failed) · People who had received fixed appliance orthodontic treatment

It is very uncertain whether hawley removable retainer changes survival of retainers (failure, upper and lower arches) compared with clear plastic removable retainer (very low certainty).

1 finding from 1 review

Hawley removable retainer vs Clear plastic removable retainer

Patient satisfaction: comfort (VAS, upper and lower arches) · People who had received fixed appliance orthodontic treatment

The review found no eligible studies for this question.

1 finding from 1 review

Indirect restorations (crowns, fixed partial dentures, inlays/onlays/veneers) vs None (single-group incidence)

Periapical pathosis · Vital teeth restored with indirect restorations

Periapical pathosis incidence among follow-up >5-10 years was 3.88% (subgroup analysis; not GRADE-rated).

2 findings from 1 review

Resin infiltration vs Placebo or no active treatment

Remineralization / reduction in lesion severity (change in QLF, laser fluorescence, or lesion area) · Patients with white spot lesions / early caries lesions (WSLs/ECLs), including orthodontic and non-orthodontic lesions, active caries…

Resin infiltration significantly improved remineralization versus control (SMD -0.94, 95% CI -1.46 to -0.43), ranking second of seven therapies by SUCRA (88.7%); certainty of evidence not assessed (no GRADE).

1 finding from 1 review

Low‐level laser therapy vs Conventional orthodontic appliance treatment

Patient-reported need for analgesics · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment

The review found no eligible studies for this question.

1 finding from 1 review

Dental caries vs Absence/lower severity of dental caries

Oral health-related quality of life · Adolescents (10-19 years)

Dental caries is associated with worse OHRQoL in adolescents, with greater severity linked to greater impact (narrative synthesis; no pooled estimate or GRADE rating).

1 finding from 1 review
  • Oral-health-related quality of life in adolescents: umbrella review. 2023 All outcomes
    Community/school/clinic settings; adolescents 10-19 years; included reviews conducted in multiple countries
    The impact of dental caries on OHRQoL was addressed in five systematic reviews [9, 26, 34, 36, 37]. Three articles report that the greater the severity of the carious lesion, the worse the impact on OHRQoL in…
    5 studies
    GRADE not reported

Elective neck dissection (at time of primary tumour resection) vs Therapeutic (delayed) neck dissection

Recurrence · Adults with oral cavity cancer (tongue or floor of mouth) and clinically negative neck nodes

Elective neck dissection (at time of primary tumour resection) probably leads to lower recurrence compared with therapeutic (delayed) neck dissection (moderate certainty).

1 finding from 1 review

Female sex vs Male sex

Oral health-related quality of life · Adolescents (10-19 years)

The abstract reports female sex is associated with worse OHRQoL, but the conclusion states the impact of gender was not clarified (narrative synthesis; no pooled estimate or GRADE rating).

1 finding from 1 review
  • Oral-health-related quality of life in adolescents: umbrella review. 2023 All outcomes
    Community/school/clinic settings; adolescents 10-19 years; included reviews conducted in multiple countries
    Worse oral health status, older age, female sex and worse socioeconomic status were significantly associated with worse OHRQoL. [Conclusion: gender and skin color did not have their level of impact clarified.]
    Studies not reported
    GRADE not reported

Low‐level laser therapy vs Conventional orthodontic appliance treatment

Total number of orthodontic appliance adjustment appointments during treatment · Adolescents and adults with malocclusion undergoing fixed orthodontic appliance treatment

The review found no eligible studies for this question.

1 finding from 1 review

Carious dentin vs Sound dentin

MMP-13 presence/activity · Human ex vivo carious dentin (mostly coronal), natural caries lesions

MMP-13 may be increased in carious dentin compared with sound dentin, but the evidence is very uncertain (very low certainty).

1 finding from 1 review