evidencegaps
Findings

What do systematic reviews say?

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

1,340 questions · 1,512 findings · 205 reviews

Sort:Best matchNewestHighest certaintyDownload CSV
No studies found 317 · 21%GRADE not reported 358 · 23.7%Very low 356 · 23.5%Low 271 · 17.9%Moderate 173 · 11.4%High 37 · 2.4%

Antioxidants (lycopene, curcumin, Oxitard) vs Placebo or no active treatment

Difficulty in swallowing (participant-reported proxy) · People of any age with a confirmed diagnosis, by clinical examination and biopsy, of oral submucous fibrosis (OSF)

Antioxidants (lycopene, curcumin, Oxitard) led to lower difficulty in swallowing (participant-reported proxy) compared with placebo or no active treatment; GRADE not reported.

1 finding from 1 review

Systemic beta carotene or carotenoids (incl. lycopene) vs placebo or no treatment

Improvement of histological features (not improved) · People with a diagnosis of oral leukoplakia

Systemic beta carotene or carotenoids (incl. lycopene) may leads to lower improvement of histological features (not improved) compared with placebo or no treatment (low certainty).

1 finding from 1 review

Systemic beta carotene or carotenoids (incl. lycopene) vs placebo or no treatment

Malignant transformation (oral cancer development) · People with a diagnosis of oral leukoplakia

It is very uncertain whether systemic beta carotene or carotenoids (incl. lycopene) changes oral cancer development compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Systemic beta carotene or carotenoids (incl. lycopene) vs placebo or no treatment

Safety of the intervention (adverse effects) · People with a diagnosis of oral leukoplakia
1 finding from 1 review
  • Interventions for treating oral leukoplakia to prevent oral cancer 2016 · Cochrane All outcomes
    5 to 12 months
    SoF 2, Safety of the intervention at 5 to 12 months: 'Systemic beta carotene did not cause any adverse effects in 1 study supplementing 10 mg/d (Nagao), and caused adverse effects of varying severity in 9% of…
    3 studies
    GRADE not reported

Systemic beta carotene or carotenoids (incl. lycopene) vs placebo or no treatment

Clinical resolution (oral lesion not completely resolved) · People with a diagnosis of oral leukoplakia
1 finding from 1 review
  • Interventions for treating oral leukoplakia to prevent oral cancer 2016 · Cochrane All outcomes
    5 to 12 months
    SoF 2, Clinical resolution (not completely resolved) at 5 to 12 months: 'The 3 studies could not be combined in meta-analysis. 2 found benefit for systemic beta carotene, and 1 did not.' No GRADE rating. Effects text…
    3 studies
    GRADE not reported

Open TMJ surgery (arthroplasty / total joint replacement)

Outcome not reported · Adults (>18 years) with temporomandibular joint osteoarthritis (TMJ OA) diagnosed by RDC/TMD or compatible criteria

The review found no eligible studies for this question.

1 finding from 1 review

General ventilation (e.g. natural ventilation, exhaust fans, opening windows) vs No general ventilation / standard operatory

Outcome not reported · Dental healthcare providers (dentist, dental surgery assistant, dental hygienist, dental technologist, dental laboratory staff, dental…

The review found no eligible studies for this question.

1 finding from 1 review

Dietary supplements (alpha lipoic acid +/- vitamins/lycopene/green tea; hypericum; Catuama; lycopene) vs placebo

Relief of burning/discomfort (symptom relief; pain intensity) · People with primary burning mouth syndrome (BMS), that is, oral mucosal pain with no dental or medical cause for such symptoms
1 finding from 1 review
  • Interventions for treating burning mouth syndrome 2016 · Cochrane All outcomes
    short-term (up to 3 months)
    SoF5 Dietary supplements vs placebo. Symptom relief short-term: insufficient or contradictory evidence regarding benefit of any evaluated dietary supplement; 628 participants (12 RCTs); very low. Subgroups: ALA without…
    12 studies · 628 participants
    Very low

Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator

Retention success rate · Children with primary molars requiring proximal (Class II) restorations

For the Rubber dam isolation: Yes subgroup, the 24-month retention success rate was 0.931 (95% CI 0.834-0.973; ungraded).

28 findings from 1 review
Show 25 more findings

Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator

Marginal integrity success rate · Children with primary molars requiring proximal (Class II) restorations

After trim-and-fill adjustment the marginal integrity success rate was 0.881 (95% CI 0.832-0.916; ungraded), a negligible change.

2 findings from 1 review

Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator

Anatomic form success rate · Children with primary molars requiring proximal (Class II) restorations

The pooled 24-month anatomic form success rate was 0.901 (95% CI 0.845-0.938; ungraded).

2 findings from 1 review

Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator

Absence of recurrent caries success rate · Children with primary molars requiring proximal (Class II) restorations

After trim-and-fill adjustment the absence-of-recurrent-caries success rate was 0.878 (95% CI 0.828-0.915; ungraded), a negligible change.

2 findings from 1 review