Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

643 questions · 671 findings · 87 reviews

No studies found 177 · 26.4%GRADE not reported 106 · 15.8%Very low 182 · 27.1%Low 114 · 17%Moderate 66 · 9.8%High 26 · 3.9%

Laterally positioned flap (LPF) vs Any other root coverage procedure

Outcome not reported · Adult patients with single (localised) recession-type defects (Miller Class I/II, at least 3 mm)

The review found no eligible studies for this question.

1 finding from 1 review

Bilateral subtotal thyroidectomy vs the Dunhill procedure

Permanent recurrent laryngeal nerve palsy [patient reported, confirmation by laryngoscopy]

Bilateral subtotal thyroidectomy showed no clear difference in permanent recurrent laryngeal nerve palsy [patient reported,… compared with the Dunhill procedure (low certainty).

1 finding from 1 review

Summary of findings: bilateral laminotomy vs conventional laminectomy

Incidence of postoperative instability · patients with lumbar stenosis

Summary of findings: bilateral laminotomy may leads to lower incidence of postoperative instability compared with conventional laminectomy (low certainty).

1 finding from 1 review

Summary of findings: bilateral laminotomy vs conventional laminectomy

Incidence of perioperative complications · patients with lumbar stenosis

Summary of findings: bilateral laminotomy showed no clear difference in incidence of perioperative complications compared with conventional laminectomy (low certainty).

1 finding from 1 review

Summary of findings: unilateral laminotomy vs conventional laminectomy

Incidence of postoperative instability · patients with lumbar stenosis

Summary of findings: unilateral laminotomy showed no clear difference in incidence of postoperative instability compared with conventional laminectomy (low certainty).

1 finding from 1 review

Summary of findings: unilateral laminotomy vs conventional laminectomy

Incidence of perioperative complications · patients with lumbar stenosis

Summary of findings: unilateral laminotomy showed no clear difference in incidence of perioperative complications compared with conventional laminectomy (low certainty).

1 finding from 1 review

Autogenous bone graft (two-stage lateral sinus lift) vs Bone substitute (anorganic bovine bone / Bio-Oss)

Complications · Patients with an atrophic posterior maxilla requiring maxillary sinus augmentation

Autogenous bone graft (two-stage lateral sinus lift) showed no clear difference in complications compared with bone substitute (anorganic bovine bone / Bio-Oss); GRADE not reported.

1 finding from 1 review

Autogenous bone graft (two-stage lateral sinus lift) vs Bone substitute (anorganic bovine bone / Bio-Oss)

Implant failure · Patients with an atrophic posterior maxilla requiring maxillary sinus augmentation

Autogenous bone graft (two-stage lateral sinus lift) showed no clear difference in implant failure compared with bone substitute (anorganic bovine bone / Bio-Oss); GRADE not reported.

1 finding from 1 review

Bilateral extraction of compromised mandibular first permanent molars vs Age- and gender-matched non-extraction controls

Lower incisor inclination (lingual tipping and retrusion) · Children (approximately 11 years or older) with compromised mandibular first permanent molars

Bilateral lower first permanent molar extraction was associated with lingual tipping and retrusion of the lower incisors in one case-control study; ungraded.

1 finding from 1 review

Bilateral extraction of compromised mandibular first permanent molars vs Age- and gender-matched non-extraction controls

Skeletal development (occlusal plane rotation, facial height) · Children (approximately 11 years or older) with compromised mandibular first permanent molars

Bilateral lower first permanent molar extraction was associated with counter-clockwise rotation of the occlusal plane and a mild decrease in lower anterior face height in one case-control study; ungraded.

1 finding from 1 review

Summary of Findings Table ‐ Large retro‐equatorial recession of horizontal rectus muscle of 9 mm on the medial rectus and 12 mm on the lateral rectus vs simple tenotomy and resuturing of the 4 horizontal rectus muscles

Change in head posture ‐ not reported · infantile nystagmus syndrome

The review found no eligible studies for this question.

1 finding from 1 review