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Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Population

Intervention or exposure

Comparison

Outcome

Any field or review title

Field or topic

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Review versions

1 questions in 1 reviews · intervention: Nano-hydroxyapatite · outcome domain: Periodontal/gingival

current versions

No studies 0 · 0%Ungraded 1 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Intervention categories, outcome domains and clusters are a proposed key pending human validation. Clear all filters

Question	Effect	Evidence	Status / GRADE
Nanocrystalline hydroxyapatite (Ostim) vs Bovine-derived xenograft (Bio-Oss) plus resorbable barrier Change in gingival recession (REC) · People with at least one dental implant affected by peri-implantitis · 4 years Interventions for replacing missing teeth: treatment of peri‐implantitis (2012) · Cochrane	MD -0.10 [-0.51, 0.31]	1 study · 22 participants	Ungraded