Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

557 questions · 600 findings · 75 reviews

No studies found 188 · 31.3%GRADE not reported 62 · 10.3%Very low 154 · 25.7%Low 122 · 20.3%Moderate 62 · 10.3%High 12 · 2%

Preprosthetic surgery for a conventional denture (PPS) vs Implant retained overdenture (dental implants) (IRO)

Dissatisfied with speech with denture · Edentulous patients requiring improved denture retention

Preprosthetic surgery for a conventional denture (PPS) showed no clear difference in dissatisfied with speech with denture compared with implant retained overdenture (dental implants) (IRO); GRADE not reported.

1 finding from 1 review

Preprosthetic surgery for a conventional denture (PPS) vs Implant retained overdenture (dental implants) (IRO)

Altered chin or lower lip skin sensation (binary) · Edentulous patients requiring improved denture retention

Preprosthetic surgery for a conventional denture (PPS) led to lower morbidity: altered sensation of the lower lip and chin compared with implant retained overdenture (dental implants) (IRO); GRADE not reported.

1 finding from 1 review

Preprosthetic surgery for a conventional denture (PPS) vs Implant retained overdenture (dental implants) (IRO)

Dissatisfied with lower denture · Edentulous patients requiring improved denture retention

Preprosthetic surgery for a conventional denture (PPS) showed no clear difference in dissatisfied with lower denture compared with implant retained overdenture (dental implants) (IRO); GRADE not reported.

1 finding from 1 review

Preprosthetic surgery for a conventional denture (PPS) vs Implant retained overdenture (dental implants) (IRO)

Dissatisfied with retention of denture · Edentulous patients requiring improved denture retention

Preprosthetic surgery for a conventional denture (PPS) showed no clear difference in dissatisfied with retention of denture compared with implant retained overdenture (dental implants) (IRO); GRADE not reported.

1 finding from 1 review

Surgery for Bell's palsy vs medical treatment (oral prednisolone) or no treatment

Complete recovery of facial nerve function at 12 months Defined as: complete recovery HB grade I. · Bell's palsy

It is very uncertain whether surgery for Bell's palsy changes complete recovery of facial nerve function at 12 months Defined as:… compared with medical treatment (oral prednisolone) or no treatment (very low certainty).

1 finding from 1 review

Surgery for Bell's palsy vs medical treatment (oral prednisolone) or no treatment

Complications and side effects · Bell's palsy

It is very uncertain whether surgery for Bell's palsy changes side effects and complications of treatmentMeasured by clinical… compared with medical treatment (oral prednisolone) or no treatment (very low certainty).

1 finding from 1 review

Surgery plus radiotherapy vs Radiotherapy alone

Adverse events associated with treatment · Adults with oral cavity or oropharyngeal cancer
1 finding from 1 review

Mohs micrographic surgery vs surgical excision

Recurrence · adults with basal cell carcinoma of the skin

Mohs micrographic surgery showed no clear difference in recurrence at 3 years compared with surgical excision (low certainty).

2 findings from 1 review

Subfascial endoscopic perforator vein surgery (SEPS) + compression vs compression alone

The proportion of pressure ulcers healed · people with venous leg ulcers

Subfascial endoscopic perforator vein surgery (SEPS) + compression may leads to higher proportion with ulcers healed at 24 months compared with compression alone (low certainty).

1 finding from 1 review

Subfascial endoscopic perforator vein surgery (SEPS) + compression vs compression alone

Recurrence of ulcers · people with venous leg ulcers

It is very uncertain whether subfascial endoscopic perforator vein surgery (SEPS) + compression changes ulcer recurrence at 24 months compared with compression alone (very low certainty).

1 finding from 1 review