Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,315 questions · 23,557 findings · 2,311 reviews

No studies found 4,183 · 17.8%GRADE not reported 3,930 · 16.7%Very low 5,371 · 22.8%Low 5,787 · 24.6%Moderate 3,320 · 14.1%High 966 · 4.1%

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Surgery vs preoperative pharmacological therapy and surgery

Disease‐related complications Intubation difficulties requiring postponement of surgery · adults with growth‐hormone secreting pituitary adenomas

It is very uncertain whether surgery alone changes disease‐related complications Intubation difficulties requiring… compared with preoperative pharmacological therapy and surgery (very low certainty).

1 finding from 1 review

LipiFlow vs basic warm compresses

Mean change from baseline in meibum quality scores at 1 to 4 weeks (higher is favored) · people with dry eye

It is very uncertain whether lipiFlow changes mean change from baseline in meibum quality scores at 1 to 4 weeks… compared with basic warm compresses (very low certainty).

1 finding from 1 review

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

Association between orthodontic treatment duration and ICLs incidence · Patients undergoing fixed orthodontic treatment with fixed (multibracket) appliances, followed for development of new ICLs

ICLs incidence increased with longer orthodontic treatment duration (meta-regression P<.01; ungraded).

1 finding from 1 review

Breastfeeding for <6 months vs Breastfeeding for ≥6 months

Early childhood caries (ECC) · Preschool children (<6 years)

In cohort studies, breastfeeding for <6 vs ≥6 months was not significantly associated with early childhood caries (RR 0.97, 95% CI 0.88-1.06; ungraded).

2 findings from 1 review

Genome-wide common variants (aggregate additive; LD score regression) vs Not applicable (variance-component estimate)

Dental caries - SNP-based heritability · Japanese adults (present-study cohort)

SNP-based heritability of dental caries was low (h2=0.0258, SE 0.0155); ungraded.

1 finding from 1 review

Postoperative systemic antibiotics (phenoxymethylpenicillin/penicillin VK, 7-day course), partial or total chemo-mechanical debridement and analgesics vs Matched placebo, partial or total chemo-mechanical debridement and analgesics

Pain at 7 days · Adults with a symptomatic necrotic tooth or localised acute apical abscess (no signs of spreading infection or systemic involvement)

It is very uncertain whether postoperative systemic antibiotics… changes pain at 7 days compared with matched placebo, partial or total chemo-mechanical debridement and… (very low certainty).

1 finding from 1 review

Extraction of the mandibular permanent first molar vs Not applicable (single-group prevalence)

Rotation of the mandibular second permanent molar · Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar)

After mandibular first molar extraction, the second molar was rotated in about 77% of cases (2 studies; very imprecise; not GRADE-rated).

1 finding from 1 review

Periodontal therapy (scaling and root planing), post-treatment vs Pre-treatment (baseline, same group)

High salivary S. mutans (over 10^4 CFU/ml) · Periodontitis patients

High-level S. mutans did not change significantly after periodontal therapy (OR 1.54).

1 finding from 1 review

Disability (developmental, intellectual, or sensory) vs Not applicable (single-group prevalence)

Moderate gingival inflammation / gingival health · Persons with disabilities (children and adults with autism, Down syndrome, cerebral palsy, hearing impairment, or multiple disabilities)…

Gingival inflammation is common among persons with disabilities in Saudi Arabia (moderate-to-severe up to about 60%), reported narratively without a pooled comparative estimate (ungraded).

1 finding from 1 review

Adhesive flash-free ceramic brackets vs Adhesive precoated ceramic brackets

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

Flash-free brackets showed no clinical WSL reduction, with certainty not graded.

1 finding from 1 review