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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. Every word you type has to appear somewhere in the question, and the closest matches are ranked first.

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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
Electrical conductance devices (electronic caries monitor (ECM) and/or CarieScan Pro), used as an adjunct to clinical oral examination vs Reference standard: histology or enhanced visual examination (with or without radiographs)
Sensitivity (test accuracy for detecting enamel caries) · Children, adolescents, or adults presenting asymptomatically or suspected of early enamel caries (in vivo), or… · Up to 3 months between index test and reference standard (in vivo studies)
Electrical conductance for the detection of dental caries (2021) · Cochrane
SoF findings (HSROC; no summary operating point reported): 'ECM: sensitivity from 0.61 to 0.98 ... CarieScan Pro: sensitivity from 0.55 to 0.91'. Across all 7 studies (8 datasets), covering 719 tooth surfaces or sites…7 studiesVery low
Observed population vs Not applicable
Mean dmft · Preschool children attending Al Ain pediatric dentistry department · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
MEAN 10.91 study · 176 participantsUngraded
Resin infiltration (Icon) vs Non-invasive treatment
Radiographic proximal caries lesion progression · Patients with non-cavitated proximal caries lesions · Longest available follow-up
Infiltration and sealing for managing non-cavitated proximal lesions: a systematic review and meta-analysis. (2021)
OR 0.21 [0.15, 0.30]11 studies · 549 participantsModerate
Intervention NR
Dental caries prevalence · General population (children and adults) in East Africa · Eritrea
Prevalence of Dental Caries and Associated Factors in East Africa, 2000-2020: Systematic Review and… (2021)
Prevalence 0.652 [0.492, 0.811]NRUngraded
Laser fluorescence (DIAGNOdent 2190/pen) vs Direct visual examination after tooth separation or bioptical cavity preparation
Diagnostic accuracy for proximal caries detection (caries detection level) · Patients with permanent posterior teeth, proximal surfaces assessed clinically (in vivo) · Caries detection level
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
Sensitivity 0.92 [0.82, 0.96]1 studyUngraded
TaqI (rs731236 T>C) polymorphism in the VDR gene (C allele / variant genotype) vs C allele vs T allele (allele contrast model)
Dental caries susceptibility (risk of dental caries) · Children and adults (no age limit) assessed for dental caries susceptibility · Overall
Association Between the TaqI (rs731236 T>C) Gene Polymorphism and Dental Caries Risk: A Meta-analysis. (2021)
OR 1.24 [1.07, 1.44]7 studies · 2470 participantsUngraded
Conventional bitewing radiography, F-speed film vs Histological validation of dental tissues (gold standard)
Diagnostic accuracy for proximal caries detection (1/3 dentin detection level) · Extracted permanent posterior teeth with proximal surfaces (in vitro) · 1/3 dentin detection level
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
Sensitivity 0.54 [0.36, 0.70]1 studyUngraded
Radiographic imaging methods (any: analogue radiographs, digital radiographs, or CBCT) vs Reference standard (histology, excavation, or enhanced visual examination)
Specificity for detection and diagnosis of early (enamel) caries · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted… · Up to 3 months between index test and reference standard (in vivo studies), Setting: in vitro (non-CBCT)
Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane
Specificity 0.89 [0.84, 0.92]NRUngraded
COE with vital rinsing (toluidine blue/tolonium chloride) vs Conventional oral examination (COE) alone
Specificity (COE plus vital rinsing arm) · OSCC or OPMD symptom-free individuals with tobacco habits
Clinical assessment for the detection of oral cavity cancer and potentially malignant disorders in… (2021) · Cochrane
Specificity 0.91 [0.90, 0.91]1 study · 4080 participantsModerate
Intervention NR
Dental caries prevalence · General population in Ethiopia (all ages, age range 6-100 years) · Amhara
Dental caries and associated factors in Ethiopia: systematic review and meta-analysis. (2021)
Prevalence 0.4044 [0.2467, 0.5621]6 studiesUngraded
Non-selective carious tissue removal and conventional restoration (CR) vs Selective carious tissue removal (selective excavation, SE)
Failure of therapy · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious… · 6-36 months, Deep lesions, primary dentition
Interventions for treating cavitated or dentine carious lesions (2021) · Cochrane
OR 4.43 [1.04, 18.77]4 studies · 265 participantsVery low
Bleaching before resin infiltration (bleaching + infiltration) vs Resin infiltration alone
Patient/dentist satisfaction · Patients with dental fluorosis
Efficacy of resin infiltration to mask post-orthodontic or non-post-orthodontic white spot lesions or… (2021)
SMD -1.53 [-4.75, 1.70]2 studiesUngraded
Laser fluorescence (DIAGNOdent 2190/pen) vs Histological validation of dental tissues (gold standard)
Diagnostic accuracy for proximal caries detection (dentin detection level) · Extracted permanent posterior teeth with proximal surfaces (in vitro) · Dentin detection level
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
Specificity 0.81 [0.78, 0.85]5 studiesUngraded
Analogue (conventional) radiographs vs Cone beam computed tomography (CBCT) (direct within-person / paired comparison); reference standard: histology
Diagnostic accuracy: analogue versus CBCT (within-person, not pooled) · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted… · Up to 3 months between index test and reference standard (in vivo studies)
Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane
Direct comparison analogue vs CBCT (within-person): 6 datasets from 3 studies (737 tooth sites or surfaces) provided data, but the results could not be pooled; only individual study results are shown (Figure 21). No…3 studiesUngraded
Visual or visual-tactile classification systems (any system: ICDAS, ERK, Nyvad, Downer, Lussi, UniViSS, or unspecified) vs Reference standard (histology, excavation, radiographs/microCT, or tooth separation)
Diagnostic accuracy: in vitro versus in vivo comparison · Asymptomatic children or adults presenting for clinical examination (in vivo studies), or extracted teeth of children… · Up to 3 months between index test and reference standard (in vivo studies), Study setting (in vitro vs in vivo)
Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries (2021) · Cochrane
Pre-specified in vitro versus in vivo comparison was not completed because 49 of the 60 histology studies were in vitro; a sensitivity analysis removing the in vivo studies confirmed a minimal change to summary…NRUngraded
Rubber dam isolation and moisture control (alone or with saliva aspiration) vs Cotton rolls (with or without saliva aspiration)
Costs: direct cost of treatment · Dental patients undergoing direct or indirect restorative treatment (no age or gender restriction)
Rubber dam isolation for restorative treatment in dental patients (2021) · Cochrane
no estimate extracted0 studiesNo studies
Any of the interventions (CR, SE, SW, sealing with sealant materials, Hall Technique, or NRCC) vs Each other, placebo, or no treatment
Safety issues (adverse events) · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious…
Interventions for treating cavitated or dentine carious lesions (2021) · Cochrane
None of the studies reported adverse effects.0 studiesNo studies
Edentulous (0 remaining teeth) vs 1-32 remaining teeth
Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies · Multivariable-adjusted
Lower Number of Teeth Is Related to Higher Risks for ACVD and Death-Systematic Review and Meta-Analyses of… (2021)
HR 1.21 [1.07, 1.36]5 studies · 101938 participantsModerate
Cerebral palsy vs Healthy age- and sex-matched controls
Dental caries prevalence · Children with cerebral palsy in Dubai · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Prevalence 531 studyUngraded
COE with light-based detection (e.g. ViziLite Plus, Microlux/DL, VELscope, Identafi 3000) vs COE with vital rinsing (toluidine blue/tolonium chloride)
Outcome NR · Apparently healthy adults not reporting symptoms of OPMD or OSCC, attending an organised screening or surveillance…
Clinical assessment for the detection of oral cavity cancer and potentially malignant disorders in… (2021) · Cochrane
No eligible studies; planned comparative analysis (COE with vital rinse vs COE with light-based detection) not populated in this version.0 studiesNo studies
Male sex vs Female sex
Gingivitis · School children aged 3-12 years in Sharjah clinic · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
OR 0.47 [0.24, 0.93]1 study · 405 participantsUngraded
Rubber dam isolation vs Isolite system
Participant acceptance/satisfaction · Dental patients undergoing restorative treatment (no age or gender restriction) · Pit and fissure sealing (permanent molars)
Rubber dam isolation for restorative treatment in dental patients (2021) · Cochrane
Rubber dam may be associated with significantly lower satisfaction than the Isolite system but evidence very uncertain, mainly worse comfort (31%, P=0.02) and less preference (26%, P=0.002) (Alhareky 2014).1 study · 42 participantsVery low
Induction chemotherapy plus locoregional treatment (radiotherapy and/or surgery) vs Locoregional treatment (radiotherapy and/or surgery) alone
Overall survival, induction platinum + 5-fluorouracil prior to radiotherapy vs radiotherapy alone · People receiving curative-intent treatment for oral cavity and oropharyngeal (squamous cell) cancer
Interventions for the treatment of oral cavity and oropharyngeal cancer: chemotherapy (2021) · Cochrane
HR 0.85 [0.70, 1.04]5 studies · 7427 participantsModerate
Maternal smoking during pregnancy vs No maternal smoking during pregnancy
Childhood dental caries · Children in cross-sectional studies · Sensitivity: excluded Julihn et al. 2009
Correlation Between Maternal Smoking During Pregnancy and Dental Caries in Children: A Systematic Review and… (2021)
OR 1.63 [1.35, 1.98]5 studiesUngraded
TaqI (rs731236 T>C) polymorphism in the VDR gene (C allele / variant genotype) vs CT genotype vs TT genotype (heterozygous model)
Dental caries susceptibility (risk of dental caries) · Children and adults (no age limit) assessed for dental caries susceptibility · Ethnicity: Caucasian
Association Between the TaqI (rs731236 T>C) Gene Polymorphism and Dental Caries Risk: A Meta-analysis. (2021)
OR 0.93 [0.56, 1.56]2 studies · 538 participantsUngraded
Direct composite resin restoration vs Amalgam restoration
Secondary caries · 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 1.30 [0.34, 4.97]5 studiesUngraded
Edentulous (0 remaining teeth) vs 1-32 remaining teeth
All-cause mortality (ACM) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies · Crude
Lower Number of Teeth Is Related to Higher Risks for ACVD and Death-Systematic Review and Meta-Analyses of… (2021)
HR 1.73 [1.41, 2.13]5 studies · 99303 participantsUngraded
Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances
Gingival index (GI) · Adults undergoing orthodontic treatment · 6 to 12 weeks, Adults
Impact of Aligners and Fixed Appliances on Oral Health during Orthodontic Treatment: A Systematic Review and… (2021)
MD -0.10 [-0.35, 0.15]1 studyUngraded
Conventional bitewing radiography, E-speed film vs Histological validation of dental tissues (gold standard)
Diagnostic accuracy for proximal caries detection (caries detection level) · Extracted permanent posterior teeth with proximal surfaces (in vitro) · Caries detection level
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
Specificity 0.90 [0.84, 0.93]9 studiesUngraded
TaqI (rs731236 T>C) polymorphism in the VDR gene (C allele / variant genotype) vs CT/CC genotype vs TT genotype (dominant model)
Dental caries susceptibility (risk of dental caries) · Children and adults (no age limit) assessed for dental caries susceptibility · Ethnicity: Asian
Association Between the TaqI (rs731236 T>C) Gene Polymorphism and Dental Caries Risk: A Meta-analysis. (2021)
OR 1.67 [0.97, 2.87]5 studies · 1932 participantsUngraded
Laser fluorescence pen (DIAGNOdent 2190/Pen) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)
Diagnostic accuracy for occlusal caries detection at the dentin caries detection level (D0-2 versus D3-4) · Extracted human permanent posterior teeth (premolars and molars), occlusal (pit-and-fissure) surfaces
Systematic review and meta-analysis of diagnostic methods for occlusal surface caries. (2021)
Specificity 0.77 [0.62, 0.88]4 studiesUngraded
Systemic sclerosis (SSc / scleroderma) vs SSc-free individuals (controls)
Number of decayed teeth · Adults (general and hospital populations assessed in case-control studies)
Oral manifestations of patients with systemic sclerosis: a meta-analysis for case-controlled studies. (2021)
SMD 0.186 [0.007, 0.365]3 studiesUngraded
Laser fluorescence (DIAGNOdent 2190/pen) vs Histological validation of dental tissues (gold standard)
Diagnostic accuracy for proximal caries detection (caries detection level) · Extracted permanent posterior teeth with proximal surfaces (in vitro) · Caries detection level
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
AUC 0.915 studiesUngraded
Arab ethnicity vs Reference ethnicity not stated
Mean DMFT · School children aged 11-17 years in Sharjah · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Regression coefficient 0.74 [0.32, 1.17]1 study · 803 participantsUngraded
Visual examination (VE) vs Histological validation of dental tissues (gold standard)
Diagnostic accuracy for proximal caries detection (1/3 dentin detection level) · Extracted permanent posterior teeth with proximal surfaces (in vitro) · 1/3 dentin detection level
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
Specificity 0.84 [0.76, 0.89]1 studyUngraded
Female sex vs Male sex
Molar-incisor hypomineralization prevalence · School children aged 8-12 years in Dubai public schools · Females
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Prevalence 32.61 study · 342 participantsUngraded
Digital bitewing radiography (phosphor plates) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)
Diagnostic accuracy for occlusal caries detection at the dentin caries detection level (D0-2 versus D3-4) · Extracted human permanent posterior teeth (premolars and molars), occlusal (pit-and-fissure) surfaces
Systematic review and meta-analysis of diagnostic methods for occlusal surface caries. (2021)
Specificity 0.95 [0.59, 0.995]2 studiesUngraded
Analogue (conventional) radiographs vs Digital radiographs (direct within-person / paired comparison); reference standard: histology, excavation, or enhanced visual examination
Specificity for detection and diagnosis of early (enamel) caries · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted… · Up to 3 months between index test and reference standard (in vivo studies), Digital
Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane
Specificity 0.88 [0.83, 0.92]15 studiesUngraded
Glass ionomer cement (for bracket bonding) vs Resin adhesive (for bracket bonding)
Initiation of white spot lesions (WSL), visual-tactile assessment · Patients of any age (11-40 years) receiving comprehensive/fixed orthodontic treatment with fixed appliances · 12-24 months follow-up
Efficacy of sealants and bonding materials during fixed orthodontic treatment to prevent enamel… (2021)
RR 0.72 [0.34, 1.54]3 studies · 394 participantsVery low
Maternal smoking during pregnancy vs No maternal smoking during pregnancy
Childhood dental caries · Children in cross-sectional studies · Sensitivity: excluded Majorana et al. 2014
Correlation Between Maternal Smoking During Pregnancy and Dental Caries in Children: A Systematic Review and… (2021)
OR 1.57 [1.47, 1.68]5 studiesUngraded
Sealing (resin sealant, glass ionomer cement, or polyurethane tape) vs Non-invasive/control treatments (flossing, fluoride varnish/toothpaste, or dietary advice; placebo in one trial)
Radiographic proximal caries lesion progression · Patients with non-cavitated proximal caries lesions · Longest available follow-up
Infiltration and sealing for managing non-cavitated proximal lesions: a systematic review and meta-analysis. (2021)
OR 0.27 [0.18, 0.42]7 studies · 320 participantsModerate
Visual or visual-tactile classification systems (any system: ICDAS, ERK, Nyvad, Downer, Lussi, UniViSS, or unspecified) vs Reference standard (histology, excavation, radiographs/microCT, or tooth separation)
Specificity for detection of enamel caries · Asymptomatic children or adults presenting for clinical examination (in vivo studies), or extracted teeth of children… · Up to 3 months between index test and reference standard (in vivo studies)
Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries (2021) · Cochrane
Specificity 0.77 [0.72, 0.82]67 studiesLow
Intervention NR
Dental caries prevalence · General population in Ethiopia (all ages, age range 6-100 years) · Others (Oromia, Harar town, SNNPR)
Dental caries and associated factors in Ethiopia: systematic review and meta-analysis. (2021)
Prevalence 0.4290 [0.2468, 0.6112]3 studiesUngraded
Radiographic imaging methods (any: analogue radiographs, digital radiographs, or CBCT) vs Reference standard (histology, excavation, or enhanced visual examination)
Sensitivity for detection and diagnosis of early (enamel) caries · Asymptomatic children, adolescents, or adults presenting for clinical examination (in vivo studies), or extracted… · Up to 3 months between index test and reference standard (in vivo studies), Dentine-caries (D3) prevalence high >=35% or unreported (non-CBCT)
Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane
Sensitivity 0.50 [0.40, 0.59]NRUngraded
Electronic caries monitor (ECM) device (ECM II / ECM III / ECM IV) vs Reference standard: histology or enhanced visual examination (with or without radiographs)
Sensitivity · Children, adolescents, or adults presenting asymptomatically or suspected of early enamel caries (in vivo), or… · Up to 3 months between index test and reference standard (in vivo studies)
Electrical conductance for the detection of dental caries (2021) · Cochrane
ECM (4 studies, 475 tooth surfaces): sensitivity ranged from 0.61 to 0.98 (0.61-0.65 in three studies; 0.98 in the most recent ECM IV study). No evidence of a difference in accuracy by device type (Chi2=0.05, df=1,…4 studiesUngraded
Intervention NR
Water samples with fluoride concentration above the acceptable range · Region: South Brazil
External control of fluoridation in the public water supplies of Brazilian cities as a strategy against… (2021)
Prevalence 12.7 [0.5, 36.6]NRUngraded
Induction chemotherapy plus locoregional treatment (radiotherapy and/or surgery) vs Locoregional treatment (radiotherapy and/or surgery) alone
Disease-free survival, induction platinum + 5-fluorouracil prior to radiotherapy vs radiotherapy alone · People receiving curative-intent treatment for oral cavity and oropharyngeal (squamous cell) cancer
Interventions for the treatment of oral cavity and oropharyngeal cancer: chemotherapy (2021) · Cochrane
HR 0.78 [0.63, 0.97]3 studies · 332 participantsUngraded
Intervention NR
Dental caries prevalence · Rwanda
Prevalence of Dental Caries and Associated Factors in East Africa, 2000-2020: Systematic Review and… (2021)
Prevalence 0.425 [0.360, 0.489]1 studyUngraded
Visual examination (VE) vs Cavity preparation or biopsy (operative validation)
Diagnostic accuracy for occlusal caries detection at the 1/3 dentin caries detection level (Ekstrand; D0-2 versus D3-4) · Human permanent posterior teeth (premolars and molars) in patients, occlusal (pit-and-fissure) surfaces
Systematic review and meta-analysis of diagnostic methods for occlusal surface caries. (2021)
Specificity 0.77 [0.67, 0.85]3 studiesUngraded
Conventional bitewing radiography, E-speed film vs Histological validation of dental tissues (gold standard)
Diagnostic accuracy for proximal caries detection (caries detection level) · Extracted permanent posterior teeth with proximal surfaces (in vitro) · Caries detection level
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
AUC 0.829 studiesUngraded