Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

610 questions · 675 findings · 57 reviews · All outcomes

No studies found 105 · 15.6%GRADE not reported 429 · 63.6%Very low 102 · 15.1%Low 31 · 4.6%Moderate 8 · 1.2%High 0 · 0%

Inlay autogenous bone graft (iliac crest) vs Inlay bone substitute (Bio-Oss block)

Perimplant bone loss · Patients with atrophic posterior mandibles (5 to 7 mm above the mandibular canal) needing implants

Inlay autogenous bone graft (iliac crest) showed no clear difference in perimplant bone loss compared with inlay bone substitute (Bio-Oss block); GRADE not reported.

1 finding from 1 review

Inlay autogenous bone graft (iliac crest) vs Inlay bone substitute (Bio-Oss block)

Vertical bone gain · Patients with atrophic posterior mandibles (5 to 7 mm above the mandibular canal) needing implants

Inlay autogenous bone graft (iliac crest) showed no clear difference in vertical bone gain compared with inlay bone substitute (Bio-Oss block); GRADE not reported.

1 finding from 1 review

Inlay autogenous bone graft (iliac crest) vs Autogenous onlay bone graft (iliac crest)

Vertical bone gain · Patients with deficient posterior mandibles (4.5 to 10 mm above the mandibular canal) needing implants

Autogenous inlay bone graft (iliac crest) showed no clear difference in vertical bone gain compared with autogenous onlay bone graft (iliac crest); GRADE not reported.

1 finding from 1 review

Vertical GBR with autogenous bone (retromolar) vs Vertical GBR with bone substitute (Regenaform)

Vertical bone gain · Patients with vertically deficient posterior/anterior mandibular ridges needing implants

Vertical GBR with autogenous bone (retromolar) led to higher vertical bone gain compared with vertical GBR with bone substitute (Regenaform); GRADE not reported.

1 finding from 1 review

Zygomatic implants without bone grafts (as a complete alternative to any bone augmentation procedure) vs Conventional dental implants in augmented maxillae

Implant failure rate · Participants with an atrophic maxilla who cannot be rehabilitated with conventional dental implants due to lack of bone (including…

The review found no eligible studies for this question.

1 finding from 1 review

One type of occlusal intervention as an adjunct to periodontal therapy vs A different type of occlusal intervention as an adjunct to periodontal therapy (head-to-head)

Outcome not reported · Adults (aged 18 years or older) with a clinical diagnosis of (chronic) periodontitis

The review found no eligible studies for this question.

1 finding from 1 review

Psychological intervention: structured telephone call (verbal follow‐up and reassurance) vs placebo or no intervention

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · People undergoing orthodontic treatment (any age; 9 to 34 years in included studies)

The review found no eligible studies for this question.

1 finding from 1 review

Any experimental intervention (surgical or non-surgical) vs active control

Healing of osteonecrosis - improvement ('healed' or 'improved' vs 'unchanged' or 'worse') · People of any age and either sex, in any setting, with BRONJ; bisphosphonate exposure past or current; includes people with cancer and…

The review found no eligible studies for this question.

1 finding from 1 review

Non-surgical interventions vs Surgical interventions

Outcome not reported · People with at least one dental implant affected by peri-implantitis

The review found no eligible studies for this question.

1 finding from 1 review

Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs usual practice

Plaque index (PI) / oral hygiene · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs)

School-based interventions may reduce dental plaque scores (SMD -0.32, favouring intervention), but the certainty of evidence is very low.

1 finding from 1 review

Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs usual practice

Oral hygiene measured by mean gingival scores · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs)

The effect of school-based interventions on gingival scores is uncertain and not statistically significant (SMD 0.12; very low certainty).

1 finding from 1 review

Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs usual practice

Dental caries · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs)

Among children aged 6-8 years, DMFT scores were significantly reduced (SMD -0.11); subgroup not separately GRADE-rated.

8 findings from 1 review
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Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs usual practice

Annual increment in DMFS (D3) · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs)

Oral-health-education interventions significantly reduced net increment in DMFS (SMD -1.05); no significant subgroup difference vs other interventions (P=0.74).

5 findings from 1 review
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Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs usual practice

Caries increment, tooth index D(M)FT · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs)

Among children aged 5-8 years, net increment in DMFT was not significantly reduced (SMD -0.36); no significant subgroup difference by age.

3 findings from 1 review

Resorbable barrier (guided bone regeneration) vs Non-resorbable barrier (guided bone regeneration)

Bone gain (horizontal - HDD) · Patients receiving immediate single implants in fresh extraction sockets (maxillary anterior/premolar sites)

Resorbable barrier (guided bone regeneration) showed no clear difference in bone gain (horizontal - HDD) compared with non-resorbable barrier (guided bone regeneration); GRADE not reported.

1 finding from 1 review

Resorbable barrier (guided bone regeneration) vs Non-resorbable barrier (guided bone regeneration)

Vertical bone gain · Patients receiving immediate single implants in fresh extraction sockets (maxillary anterior/premolar sites)

Resorbable barrier (guided bone regeneration) showed no clear difference in bone gain (vertical - VDH) compared with non-resorbable barrier (guided bone regeneration); GRADE not reported.

1 finding from 1 review

Resorbable barrier (guided bone regeneration) vs Resorbable barrier + particulate autogenous bone

Vertical bone gain · Patients receiving immediate single implants in fresh extraction sockets (maxillary anterior/premolar sites)

Resorbable barrier (guided bone regeneration) showed no clear difference in bone gain (vertical - VDH) compared with resorbable barrier + autogenous bone; GRADE not reported.

1 finding from 1 review

Resorbable barrier (guided bone regeneration) vs Resorbable barrier + particulate autogenous bone

Bone gain (horizontal - HDD) · Patients receiving immediate single implants in fresh extraction sockets (maxillary anterior/premolar sites)

Resorbable barrier (guided bone regeneration) showed no clear difference in bone gain (horizontal - HDD) compared with resorbable barrier + autogenous bone; GRADE not reported.

1 finding from 1 review

Non-resorbable barrier (guided bone regeneration) vs Resorbable barrier + particulate autogenous bone

Vertical bone gain · Patients receiving immediate single implants in fresh extraction sockets (maxillary anterior/premolar sites)

Non-resorbable barrier (guided bone regeneration) showed no clear difference in bone gain (vertical - VDH) compared with resorbable barrier + autogenous bone; GRADE not reported.

1 finding from 1 review

Non-resorbable barrier (guided bone regeneration) vs Resorbable barrier + particulate autogenous bone

Bone gain (horizontal - HDD) · Patients receiving immediate single implants in fresh extraction sockets (maxillary anterior/premolar sites)

Non-resorbable barrier (guided bone regeneration) showed no clear difference in bone gain (horizontal - HDD) compared with resorbable barrier + autogenous bone; GRADE not reported.

1 finding from 1 review