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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.

Limit to evidence status or GRADE (optional)

47 questions in 6 reviews · cluster CL0253

current versions
No studies 1 · 2.1%Ungraded 44 · 93.6%Very low 0 · 0%Low 2 · 4.3%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

QuestionEffectEvidenceStatus / GRADE
Selective caries removal with composite resin vs Complete caries removal with composite resin
Restoration failure · Children with carious primary teeth after vital or non-vital pulp therapy · 2 to 3 years
Clinical effectiveness of restorative materials for the restoration of carious lesions in pulp treated… (2022)
Relative probability of failure 3.441 study · 48 participantsUngraded
Composite resin vs Compomer
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, %) 01 study · 84 participantsUngraded
Amalgam vs Composite resin
Restoration failure · Children with carious primary teeth · 2 years, Class II
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) amalgam 17.5%; composite resin 6.2%1 study · 43 participantsUngraded
Amalgam vs Resin-modified GIC
Restoration failure · Children with carious primary teeth · 1 year, Class II
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) amalgam 28.0%; RMGIC 16.9%1 study · 120 participantsUngraded
Bulk-fill composite resin with 15-second dentine etching vs Bulk-fill composite resin with 7-second dentine etching
Restoration failure · Children with carious primary teeth · 1.5 years
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) 15 s 16.9%; 7 s 5.8%1 study · 62 participantsUngraded
Composite resin vs HVGIC
Restoration failure · Children with carious primary teeth · 2 years, ART; Class I and II
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) HVGIC 5.9%; composite resin 6.7% (cumulative)1 study · 219 participantsUngraded
Amalgam vs Conventional GIC
Restoration failure · Children with carious primary teeth · 5 years, Class I and II
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) amalgam 4.4%; conventional GIC 7.6%1 study · 76 participantsUngraded
Amalgam vs Compomer
Restoration failure · Children with carious primary teeth · 2 years, Class II
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) amalgam 1.0%; compomer 1.0%1 study · 75 participantsUngraded
Flowable bulk-fill composite resin vs Compomer
Restoration failure · Children with carious primary teeth · 1 year, Class II
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) compomer 0%; bulk-fill composite resin 0%1 study · 32 participantsUngraded
Composite resin with beveled cavity margin vs Composite resin without beveled cavity margin
Restoration failure · Children with carious primary teeth · 1.5 years, Class I
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) bevel 1.8%; no bevel 3.5%1 study · 32 participantsUngraded
Composite resin with etch-and-rinse adhesive vs Composite resin with self-etch adhesive
Restoration failure · Children with carious primary teeth · 1.5 years
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) etch-and-rinse 19.5%; self-etch 7.0%1 study · 44 participantsUngraded
Composite resin vs High-viscosity GIC and bulk-fill composite resins
Restoration failure · Children with carious primary teeth · 1 year, Class II
Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022)
Annual failure rate (%) HVGIC 2.9%; composite resin 0%; bulk-fill CR1 0%; bulk-fill CR2 0%1 study · 30 participantsUngraded
Direct composite resin restoration vs Amalgam restoration
Restoration failure rate · People with permanent or adult posterior teeth requiring restoration (parallel-group trials involved children aged 6… · Follow-up: 5 to 7 years
Direct composite resin fillings versus amalgam fillings for permanent posterior teeth (2021) · Cochrane
RR 1.89 [1.52, 2.35]2 studies · 921 participantsLow
Direct composite resin restoration vs Amalgam restoration
Restoration failure rate · People with permanent or adult posterior teeth requiring restoration (parallel-group trials involved children aged 6… · Follow-up >= 3 years, Parallel-group and split-mouth trials combined
Direct composite resin fillings versus amalgam fillings for permanent posterior teeth (2021) · Cochrane
RR 1.65 [1.13, 2.40]8 studiesUngraded
Direct composite resin restoration vs Amalgam restoration
Restoration failure rate · People with permanent or adult posterior teeth requiring restoration (parallel-group trials involved children aged 6… · Follow-up >= 3 years, Split-mouth trials
Direct composite resin fillings versus amalgam fillings for permanent posterior teeth (2021) · Cochrane
RR 1.33 [0.84, 2.11]6 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Rubber dam isolation: Yes
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.931 [0.834, 0.973]10 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Marginal integrity success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Trim-and-fill adjusted (publication-bias sensitivity)
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.881 [0.832, 0.916]32 (27 observed + 5 imputed) studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Reporting bias: No
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.867 [0.779, 0.924]24 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Assessor blinding (triple-blind): Yes
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.805 [0.674, 0.892]16 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Assessor blinding (triple-blind): No
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.934 [0.859, 0.971]11 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Material type: Resin-based material + self-etching adhesion
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.824 [0.672, 0.914]8 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Dentist experience: Non-experienced
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.554 [0.168, 0.885]2 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Cavity form: Atraumatic restorative treatment (ART)
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.649 [0.488, 0.783]8 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Material type: Open sandwich restoration
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.950 [0.639, 0.995]1 studyUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.879 [0.803, 0.928]27 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Reporting bias: Yes
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.935 [0.726, 0.987]3 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Use of coat: Yes
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.904 [0.474, 0.989]3 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Material type: Resin-based material + total-etching adhesion
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.949 [0.868, 0.981]7 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Use of cavity conditioner: Yes
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.826 [0.605, 0.937]10 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Trim-and-fill adjusted (publication-bias sensitivity)
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.839 [0.764, 0.893]34 (27 observed + 7 imputed) studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Cavity form: Conventional cavity design
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.936 [0.895, 0.961]19 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Study design: Randomized controlled trial
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.854 [0.718, 0.931]15 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Random assignment: No/Incorrect
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.897 [0.792, 0.952]12 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Material type: Resin-modified glass ionomer cement (RMGIC)
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.956 [0.865, 0.986]5 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Use of cavity conditioner: No
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.973 [0.695, 0.998]2 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Random assignment: Correct
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.851 [0.716, 0.929]15 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Dentist experience: Experienced
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.895 [0.828, 0.938]25 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Study design: Nonrandomized controlled trial
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.899 [0.768, 0.961]9 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Rubber dam isolation: No
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.847 [0.726, 0.920]14 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Marginal integrity success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.898 [0.852, 0.931]27 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Use of coat: No
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.854 [0.609, 0.956]9 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Material type: High-viscosity glass ionomer cement (HVGIC)
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.671 [0.447, 0.838]6 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Study design: Noncontrolled trial
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.892 [0.614, 0.977]3 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Financial source: Private or mixed
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.807 [0.482, 0.949]5 studiesUngraded
Tooth-coloured direct restorative materials (composite, compomer, giomer, RMGIC, HVGIC, open-sandwich) vs No comparator group (single-arm pooled success rate; materials/techniques contrasted via moderator analyses)
Retention success rate · Children with primary molars requiring proximal (Class II) restorations · 24 months, Financial source: Public
Success rate of proximal tooth-coloured direct restorations in primary teeth at 24 months: a meta-analysis. (2020)
Proportion 0.909 [0.785, 0.965]12 studiesUngraded
Adhesively bonded amalgam restorations in conventional preparations utilising deliberate retention (all bonding agents) vs Traditional non‐bonded amalgam restorations
Marginal deterioration of the restoration and fracture of the remaining tooth tissue · Adults and adolescents with permanent posterior molar and premolar teeth suitable for Class I and II, but excluding… · Mean 24 months
Adhesively bonded versus non‐bonded amalgam restorations for dental caries (2016) · Cochrane
Marginal deterioration of the restoration and fracture of the remaining tooth tissue - Follow‐up: mean 24 months | Study population | Relative effect (95% CI): Not estimable | Number of participants (studies): 31 (1…1 study · 31 participantsLow
Resin composite restorations (filling and bonding systems) containing antibacterial agents vs Composite restorations not containing antibacterial agents
Postoperative sensitivity, marginal adaptation, anatomic form and other clinical outcomes (USPHS restoration quality; includes tooth vitality and pulpitis) · Adults and adolescents in any age group with restorations in the permanent dentition and children with restorations in…
Antibacterial agents in composite restorations for the prevention of dental caries (2013) · Cochrane
No studies were included in this review, as we were unable to find any trials directly comparing antibacterial containing composites to other active interventions or controls.0 studiesNo studies