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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.

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Intervention or exposure

Comparison

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Review versions

2 questions in 1 reviews · cluster CL0214

current versions

No studies 0 · 0%Ungraded 2 · 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
Prefabricated zirconia crowns (e.g., NuSmile, Zirkiz, Kinder Krown) vs Other crowns/restorations (stainless steel crowns, pre-veneered SSC, resin composite strip crowns, glass-fiber composite crowns) Recurrent caries (crowns free of recurrent caries) · Children with primary (deciduous) teeth requiring full-coverage crown restoration · 6 months Zirconia Crowns for Primary Teeth: A Systematic Review and Meta-Analyses. (2022)	RR 1.00 [0.97, 1.03]	2 studies · 205 participants	Ungraded
Prefabricated zirconia crowns (e.g., NuSmile, Zirkiz, Kinder Krown) vs Other crowns/restorations (stainless steel crowns, pre-veneered SSC, resin composite strip crowns, glass-fiber composite crowns) Recurrent caries (crowns free of recurrent caries) · Children with primary (deciduous) teeth requiring full-coverage crown restoration · 12 months Zirconia Crowns for Primary Teeth: A Systematic Review and Meta-Analyses. (2022)	RR 1.03 [0.96, 1.10]	2 studies · 203 participants	Ungraded