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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.
15 questions in 7 reviews · intervention: Operative/pulp treatment · outcome domain: Restoration survival/failure
current versionsNo studies 2 · 13.3%Ungraded 13 · 86.7%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 |
|---|---|---|---|
Composite strip crowns with composite, fiber, or reverse metal posts vs Alternative post type Restoration failure · Children with carious primary teeth after vital or non-vital pulp therapy · 1 year, Composite post (CP) arm Clinical effectiveness of restorative materials for the restoration of carious lesions in pulp treated… (2022) | Annual failure rate (AFR, %) 2.3 | 1 study · 54 participants | Ungraded |
Preformed metal crowns vs Resin-modified glass-ionomer cement plus composite resin Restoration failure · Children with carious primary teeth after vital or non-vital pulp therapy · 2 years Clinical effectiveness of restorative materials for the restoration of carious lesions in pulp treated… (2022) | Annual failure rate (AFR, %) 2.5 | 1 study · 87 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) Crown retention · 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 1.02 [0.94, 1.11] | 3 studies · 201 participants | Ungraded |
Hall-technique preformed metal crown vs Non-restorative caries treatment and compomer Restoration failure · Children with carious primary teeth · 2.5 years, Class II Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022) | Annual failure rate (%) PMC Hall technique 3.1%; compomer 14.7% | 1 study · 169 participants | Ungraded |
Zirconia crown vs Composite strip crown Restoration failure · Children with carious primary teeth · 1 year, Primary incisors Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022) | Annual failure rate (%) zirconia crown 3.3%; composite strip crown 15.0% | 1 study · 32 participants | Ungraded |
Hall Technique preformed metal crowns vs Conventional restorations (amalgam, GIC, composite) Restoration failure · Children (3-10 years) with dentine caries in primary molars · 1-5 years Minimal intervention dentistry for managing carious lesions into dentine in primary teeth: an umbrella review. (2022) | 3% (HT) vs 37% (control) | 1 study | 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) Crown retention · 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 1.00 [0.94, 1.05] | 3 studies · 156 participants | Ungraded |
Metal-free implant-supported single crowns (zirconia veneered with feldspathic ceramic) vs Metal-ceramic implant-supported single crowns Marginal bone level (first bone to implant contact, FBIC) · Adults (18 years or older) with one missing tooth in the aesthetic zone needing an implant-supported single crown · 24 months, Mesial to crown Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | MD -0.01 [-0.93, 0.91] | 1 study · 18 participants | Ungraded |
Metal-free implant-supported single crowns (zirconia veneered with feldspathic ceramic) vs Metal-ceramic implant-supported single crowns Marginal bone level (first bone to implant contact, FBIC) · Adults (18 years or older) with one missing tooth in the aesthetic zone needing an implant-supported single crown · 12 months, Mesial to crown Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | MD -0.03 [-0.42, 0.36] | 1 study · 18 participants | Ungraded |
Metal-free implant-supported single crowns (zirconia veneered with feldspathic ceramic) vs Metal-ceramic implant-supported single crowns Marginal bone level (first bone to implant contact, FBIC) · Adults (18 years or older) with one missing tooth in the aesthetic zone needing an implant-supported single crown · 24 months, Distal to crown Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | MD -0.18 [-0.89, 0.53] | 1 study · 18 participants | Ungraded |
Metal-free implant-supported single crowns (zirconia veneered with feldspathic ceramic) vs Metal-ceramic implant-supported single crowns Marginal bone level (first bone to implant contact, FBIC) · Adults (18 years or older) with one missing tooth in the aesthetic zone needing an implant-supported single crown · 12 months, Distal to crown Metal‐free materials for fixed prosthodontic restorations (2017) · Cochrane | MD 0.09 [-0.28, 0.46] | 1 study · 18 participants | Ungraded |
Preformed crown (any material; conventional technique or Hall Technique) vs Filling (any material; with or without complete carious tissue excavation; with or without pulp treatment) Time to restoration failure/retreatment · Children with decayed primary molar teeth Preformed crowns for decayed primary molar teeth (2015) · Cochrane | The studies did not measure this outcome. | 0 studies | No studies |
Preformed metal crown (fitted using the Hall Technique) vs Non-restorative caries treatment Time to restoration failure/retreatment · Children with decayed primary molar teeth Preformed crowns for decayed primary molar teeth (2015) · Cochrane | The studies did not measure this outcome. | 0 studies | No studies |
Aesthetic (resin-veneered) crowns vs Conventional metal (stainless steel) crowns Restoration failure at 6 months · Children aged 12 years or younger with tooth decay involving at least one tooth in the primary dentition, symptomatic… · 6 months Dental fillings for the treatment of caries in the primary dentition (2009) · Cochrane | OR 3.29 [0.12, 89.81] | 1 study · 22 participants | Ungraded |
Aesthetic (resin-veneered) crowns vs Conventional metal (stainless steel) crowns Marginal integrity at 6 months · Children aged 12 years or younger with tooth decay involving at least one tooth in the primary dentition, symptomatic… · 6 months Dental fillings for the treatment of caries in the primary dentition (2009) · Cochrane | Marginal integrity at 6 months: odds ratio not estimable - no events recorded at the 6-month evaluation. | 1 study · 22 participants | Ungraded |