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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)

5,762 questions in 263 reviews · Dental caries

current versions
No studies 321 · 5.6%Ungraded 4,450 · 77.2%Very low 455 · 7.9%Low 297 · 5.2%Moderate 200 · 3.5%High 39 · 0.7%

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.

QuestionEffectEvidenceStatus / GRADE
Full strength formocresol (FC) vs 1:25 diluted formocresol (FC)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 6 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
No event in any participant; not estimable1 study · 30 participantsUngraded
Mineral trioxide aggregate (MTA) vs Buffered glutaraldehyde
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth · 6 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Assessed pain, soft tissue, mobility, radiolucency, root resorption, pulp canal obliteration (Goyal 2016); no clinical/radiological failure outcome; pain, mobility, radiolucency, root resorption significantly favour MTA1 study · 60 participantsUngraded
Mineral trioxide aggregate (MTA) vs Diode laser
Outcome NR · Children with extensive decay involving the dental pulp in primary teeth · 6 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Assessed pain, soft tissue, mobility, radiolucency, root resorption, premature tooth loss (Niranjani 2015); no clinical/radiological failure outcome; no significant differences (RR 0.33, 0.01 to 7.72)1 study · 40 participantsUngraded
3Mix (ciprofloxacin + metronidazole + minocycline) pulpotomy vs 3Mix pulpectomy
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 5.00 [0.25, 99.95]1 study · 60 participantsUngraded
Low level of schooling (>33.60% of the population) vs Not applicable
Mean DMFT · Adult participants in 25 meta-regression studies · Unadjusted model
Socioeconomic Factors and Caries in People between 19 and 60 Years of Age: An Update of a Systematic Review… (2018)
Meta-regression coefficient -2.30107911 studiesUngraded
Primary education vs University education
Prevalence of fair/poor self-rated oral health · Adults aged 25 years and older in Australia, Canada, New Zealand, and the United States · 2004-2006, Australia
Socioeconomic status, oral health and dental disease in Australia, Canada, New Zealand and the United States. (2018)
AD 10.88 [8.42, 13.33]1 study · 5073 participantsUngraded
Zinc oxide and eugenol (ZOE) vs ZOE + calcium hydroxide + iodoform (unnamed product)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
Radiological failure favouring ZOE+CH+iodoform product1 study · 109 participantsUngraded
Visual caries detection (ICDAS visual/visual-tactile inspection) vs Reference standard (histological validation or cavity/lesion opening; advanced = cavitated/dentin-involved lesions, all = enamel-confined initial lesions also counted)
Sensitivity for detecting advanced occlusal caries · Occlusal surfaces of permanent molars (demonstrated in 12-14 year-olds; underlying diagnostic accuracy studies, mostly… · Conventional meta-analysis (all studies)
Visual and radiographic caries detection: a tailored meta-analysis for two different settings, Egypt and… (2018)
Sensitivity 64.6 [57, 71]94 studiesUngraded
Low polymerization shrinkage resin composite (silorane, ormocer, bulk-fill or other modified-monomer composite) vs Conventional methacrylate-based resin composite
Retention (restoration loss) · People with permanent posterior teeth restored with class I or II direct restorations · 12 months
Meta-analysis of the clinical behavior of posterior direct resin restorations: Low polymerization shrinkage… (2018)
OR 0.83 [0.33, 2.09]11 studies · 1834 participantsUngraded
Calcium-enriched mixture (CEM) cement vs Mineral trioxide aggregate (MTA)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 6 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
No radiological failure in any participant at 6 months; not estimable1 study · 42 participantsVery low
Ferric sulphate (FS) vs Formocresol (FC)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 1.33 [0.73, 2.42]6 studies · 394 participantsLow
ProRoot MTA vs RetroMTA
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 6 and 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 0.35 [0.04, 3.22]1 study · 96 participantsUngraded
Erbium:YAG laser vs Ferric sulphate (FS)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 24 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 0.61 [0.19, 1.94]1 study · 97 participantsUngraded
Fluoride in gel vs No treatment
Caries increment in permanent teeth (DMFS change from baseline) · Children or adolescents · At least 1 year or school year, Network meta-regression covariate: randomization year
Graphs of study contributions and covariate distributions for network meta-regression. (2018)
no estimate extractedNRUngraded
Slow-release fluoride device (fluoride glass beads) vs Placebo or usual care (control)
Harms of slow-release fluoride devices · Children with high risk of dental decay
Slow‐release fluoride devices for the control of dental decay (2018) · Cochrane
132 (1 study); very low; Study reported that no irritations or other harms were reported1 study · 132 participantsVery low
Low polymerization shrinkage resin composite (silorane, ormocer, bulk-fill or other modified-monomer composite) vs Conventional methacrylate-based resin composite
Marginal discoloration · People with permanent posterior teeth restored with class I or II direct restorations · 12 months
Meta-analysis of the clinical behavior of posterior direct resin restorations: Low polymerization shrinkage… (2018)
OR 1.53 [0.98, 2.41]13 studies · 2082 participantsUngraded
Electrosurgery vs Calcium-enriched mixture (CEM)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 6, 12 and 24 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
No clinical failure in any participant at 6/12/24 months (Khorakian 2014); not estimable1 study · 102 participantsUngraded
Populations with a low level of schooling (>=33.60% of the population with low schooling) vs Populations with a higher level of schooling (<33.60% of the population with low schooling)
Dental caries experience (DMFT) · Adults aged 19-60 years · Overall
Socioeconomic Factors and Caries in People between 19 and 60 Years of Age: An Update of a Systematic Review… (2018)
MEAN 10.87 [7.53, 14.20]11 studiesUngraded
Sodium hypochlorite (NaOCl) vs Ferric sulphate (FS)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 4.39 [0.22, 87.82]2 studies · 110 participantsVery low
Endoflas chlorophenol free (Endoflas-CF) vs Zinc oxide and eugenol (ZOE)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 6 and 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 1.33 [0.35, 5.03]1 studyUngraded
Radiographic caries detection (bitewing radiography) vs Reference standard (histological validation or cavity/lesion opening; advanced = cavitated/dentin-involved lesions, all = enamel-confined initial lesions also counted)
PPV for detecting all (initial and advanced) occlusal caries · Occlusal surfaces of permanent molars (demonstrated in 12-14 year-olds; underlying diagnostic accuracy studies, mostly… · Tailored to Egypt
Visual and radiographic caries detection: a tailored meta-analysis for two different settings, Egypt and… (2018)
PPV 32.111 studiesUngraded
Fluorides combined with CPP-ACP vs Fluorides alone (monotherapy)
Laser fluorescence (LF) change · Patients with early caries lesions in permanent teeth (non-fluoridated water area) · Post-treatment (12-24 weeks), Location of lesions: smooth surfaces
Efficacy of fluorides and CPP-ACP vs fluorides monotherapy on early caries lesions: A systematic review and… (2018)
MD -13.90 [-39.25, 11.46]4 studiesUngraded
Sealapex (eugenol-free calcium hydroxide) vs Calcium hydroxide (CH)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 0.50 [0.10, 2.43]1 study · 40 participantsUngraded
Fluoride in varnish vs No treatment
Caries increment in permanent teeth (DMFS change from baseline) · Children or adolescents · At least 1 year or school year, Network meta-regression covariate: randomization year
Graphs of study contributions and covariate distributions for network meta-regression. (2018)
no estimate extractedNRUngraded
Full strength formocresol (FC) vs 1:5 diluted formocresol (FC)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 6 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
No event in any participant (Goyal 2014); not estimable1 study · 30 participantsUngraded
Enamel matrix derivative (EMD) vs Formocresol (FC)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 6 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 0.80 [0.23, 2.83]2 studies · 100 participantsVery low
Low income vs High income
Prevalence of untreated decay (% DT > 0) · Adults aged 25 years and older in Australia, Canada, New Zealand, and the United States · 2003-2004, United States
Socioeconomic status, oral health and dental disease in Australia, Canada, New Zealand and the United States. (2018)
AD 8.93 [4.79, 13.06]1 study · 4568 participantsUngraded
3Mix (ciprofloxacin + metronidazole + minocycline) pulpotomy vs 3Mix pulpectomy
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 11.00 [0.64, 190.53]1 study · 60 participantsUngraded
Radiographic caries detection (bitewing radiography) vs Reference standard (histological validation or cavity/lesion opening; advanced = cavitated/dentin-involved lesions, all = enamel-confined initial lesions also counted)
NPV for detecting advanced occlusal caries · Occlusal surfaces of permanent molars (demonstrated in 12-14 year-olds; underlying diagnostic accuracy studies, mostly… · Tailored to Germany
Visual and radiographic caries detection: a tailored meta-analysis for two different settings, Egypt and… (2018)
NPV 94.336 studiesUngraded
Radiographic caries detection (bitewing radiography) vs Reference standard (histological validation or cavity/lesion opening; advanced = cavitated/dentin-involved lesions, all = enamel-confined initial lesions also counted)
PPV for detecting advanced occlusal caries · Occlusal surfaces of permanent molars (demonstrated in 12-14 year-olds; underlying diagnostic accuracy studies, mostly… · Tailored to Germany
Visual and radiographic caries detection: a tailored meta-analysis for two different settings, Egypt and… (2018)
PPV 39.536 studiesUngraded
Visual caries detection (ICDAS visual/visual-tactile inspection) vs Reference standard (histological validation or cavity/lesion opening; advanced = cavitated/dentin-involved lesions, all = enamel-confined initial lesions also counted)
Specificity for detecting advanced occlusal caries · Occlusal surfaces of permanent molars (demonstrated in 12-14 year-olds; underlying diagnostic accuracy studies, mostly… · Tailored to Egypt
Visual and radiographic caries detection: a tailored meta-analysis for two different settings, Egypt and… (2018)
Specificity 84.9 [82, 89]55 studiesUngraded
Visual caries detection (ICDAS visual/visual-tactile inspection) vs Reference standard (histological validation or cavity/lesion opening; advanced = cavitated/dentin-involved lesions, all = enamel-confined initial lesions also counted)
PPV for detecting all (initial and advanced) occlusal caries · Occlusal surfaces of permanent molars (demonstrated in 12-14 year-olds; underlying diagnostic accuracy studies, mostly… · Tailored to Egypt
Visual and radiographic caries detection: a tailored meta-analysis for two different settings, Egypt and… (2018)
PPV 35.651 studiesUngraded
Low polymerization shrinkage resin composite (silorane, ormocer, bulk-fill or other modified-monomer composite) vs Conventional methacrylate-based resin composite
Marginal discoloration · People with permanent posterior teeth restored with class I or II direct restorations · 18 months
Meta-analysis of the clinical behavior of posterior direct resin restorations: Low polymerization shrinkage… (2018)
Only two articles, both testing silorane resins, evaluated marginal discoloration after 18 months; one favored the experimental group and one the control group, with the meta-analysis showing no difference in the…2 studiesUngraded
Populations with a low level of schooling (>=33.60% of the population with low schooling) vs Populations with a higher level of schooling (<33.60% of the population with low schooling)
Association with dental caries experience (DMFT) by random-effects meta-regression · Adults aged 19-60 years · Adjusted (Model 1)
Socioeconomic Factors and Caries in People between 19 and 60 Years of Age: An Update of a Systematic Review… (2018)
Meta-regression coefficient 7.205453NRUngraded
Low polymerization shrinkage resin composite (silorane, ormocer, bulk-fill or other modified-monomer composite) vs Conventional methacrylate-based resin composite
Postoperative sensitivity · People with permanent posterior teeth restored with class I or II direct restorations · 24 months
Meta-analysis of the clinical behavior of posterior direct resin restorations: Low polymerization shrinkage… (2018)
Six articles (seven experimental groups) evaluated postoperative sensitivity after 24 months; four showed no sensitivity in either group and three favored the control group, but the overall meta-analytic effect was not…6 studiesUngraded
Vitapex (calcium hydroxide/iodoform) vs Sealapex (eugenol-free calcium hydroxide)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 6 and 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 0.20 [0.01, 3.92]1 study · 40 participantsUngraded
Calcium hydroxide/iodoform (CH/iodoform) vs Calcium hydroxide (CH)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 1.17 [0.87, 1.59]1 study · 65 participantsUngraded
Intervention NR
Caries and/or fillings in adjacent teeth · Occlusal surfaces (extraction vs FPM present; more decayed/filled with extraction)
Consequences of early extraction of compromised first permanent molar: a systematic review. (2018)
OR 1.64 [1.35, 2.1]1 studyUngraded
Biodentine vs Mineral trioxide aggregate (MTA)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 6 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 1.72 [0.42, 6.99]4 studies · 234 participantsLow
Lower university education (<33.78% of the population) vs Not applicable
Mean DMFT · Adult participants in 25 meta-regression studies · Unadjusted model
Socioeconomic Factors and Caries in People between 19 and 60 Years of Age: An Update of a Systematic Review… (2018)
Meta-regression coefficient -0.306678818 studiesUngraded
Mineral trioxide aggregate (MTA) vs Simvastatin
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
No radiological failure in any participant; not estimable1 study · 160 participantsUngraded
Low-level laser therapy (LLLT) vs Calcium hydroxide (CH)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 6 and 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
No clinical failure in any participant (Fernandes 2015); not estimable1 study · 30 participantsUngraded
Radiographic caries detection (bitewing radiography) vs Reference standard (histological validation or cavity/lesion opening; advanced = cavitated/dentin-involved lesions, all = enamel-confined initial lesions also counted)
Specificity for detecting advanced occlusal caries · Occlusal surfaces of permanent molars (demonstrated in 12-14 year-olds; underlying diagnostic accuracy studies, mostly… · Tailored to Egypt
Visual and radiographic caries detection: a tailored meta-analysis for two different settings, Egypt and… (2018)
Specificity 89.1 [86, 92]38 studiesUngraded
Fluoride in rinse vs Placebo
Caries increment in permanent teeth (DMFS change from baseline) · Children or adolescents · At least 1 year or school year, Network meta-regression covariate: randomization year
Graphs of study contributions and covariate distributions for network meta-regression. (2018)
no estimate extractedNRUngraded
3Mixtatin vs Simvastatin
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
No radiological failure in any participant; not estimable1 study · 160 participantsUngraded
Glutaraldehyde + zinc oxide and eugenol (ZOE) vs Full strength formocresol (FC)
Radiological failure · Children with extensive decay involving the dental pulp in primary teeth · 3 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 0.46 [0.09, 2.28]1 study · 48 participantsUngraded
Ferric sulphate (FS) vs Formocresol (FC)
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · 12 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
RR 1.38 [0.45, 4.27]6 studies · 394 participantsLow
Radiographic caries detection (bitewing radiography) vs Reference standard (histological validation or cavity/lesion opening; advanced = cavitated/dentin-involved lesions, all = enamel-confined initial lesions also counted)
Sensitivity for detecting advanced proximal caries · Proximal surfaces of permanent molars (demonstrated in 12-14 year-olds; underlying diagnostic accuracy studies, mostly… · Conventional meta-analysis (all studies)
Visual and radiographic caries detection: a tailored meta-analysis for two different settings, Egypt and… (2018)
Sensitivity 44.4 [38, 51]22 studiesUngraded
HDI (quantitative) vs Populations in countries with a higher Human Development Index (very high, HDI >=0.800)
Association with dental caries experience (DMFT) by random-effects meta-regression · Adults aged 19-60 years · Adjusted (Model 2)
Socioeconomic Factors and Caries in People between 19 and 60 Years of Age: An Update of a Systematic Review… (2018)
Meta-regression coefficient 6.901906NRUngraded
Portland cement (PC) vs Portland cement + iodoform or Portland cement + zirconium oxide
Clinical failure · Children with extensive decay involving the dental pulp in primary teeth · up to 24 months
Pulp treatment for extensive decay in primary teeth (2018) · Cochrane
No events in any participant (Lourenco 2015a); not estimable1 study · 30 participantsUngraded