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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
Laser fluorescence (DIAGNOdent 2095) 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)
Sensitivity 0.68 [0.54, 0.79]7 studiesUngraded
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 · 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), Primary dentition
Electrical conductance for the detection of dental caries (2021) · Cochrane
Primary dentition (3 studies): sensitivity ranged from 0.91 to 0.93. No evidence of a difference in accuracy by dentition (removing accuracy covariate: Chi2=3.15, df=1, P=0.08).3 studiesUngraded
Intervention NR
Initiation of white spot lesions (WSL), visual-tactile assessment · Sensitivity (coating with vs without fluoride release, excluding high risk-of-bias studies)
Efficacy of sealants and bonding materials during fixed orthodontic treatment to prevent enamel… (2021)
RR 0.83 [0.67, 1.04]NRUngraded
Urban residency vs Rural residency
Dental caries (presence) · Individuals in East Africa assessed for dental caries
Prevalence of Dental Caries and Associated Factors in East Africa, 2000-2020: Systematic Review and… (2021)
OR 0.962 [0.595, 1.554]6 studies · 2489 participantsUngraded
Conventional bitewing radiography (D-speed film) vs Cavity preparation or biopsy (operative validation)
Diagnostic accuracy for occlusal caries detection at the caries detection level (D0 versus D1-D4) · 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)
DOR 2.59 [1.24, 5.44]1 studyUngraded
Early childhood caries (ECC) vs ECC-free children (caries-free controls)
Iron deficiency (ID) · Preschool children (<6 years) · Overall
Iron deficiency and early childhood caries: a systematic review and meta-analysis. (2021)
OR 2.63 [1.85, 3.73]8 studies · 9151 participantsUngraded
Intervention NR
Dental caries prevalence · Preschoolers (AlKhayat, Dubai private preschools)
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Prevalence 38.5%1 studyUngraded
Conventional bitewing radiography (F-speed film) 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)
Sensitivity 0.50 [0.22, 0.79]2 studiesUngraded
Caries experience vs No caries experience
Dental erosion · Five-year-old preschool children in Sharjah · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
OR 0.28 [0.16, 0.51]1 study · 403 participantsUngraded
Visual examination (VE) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)
Diagnostic accuracy for occlusal caries detection at the 1/3 dentin caries detection level (Ekstrand; 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 0.88 [0.83, 0.92]2 studiesUngraded
Visual examination (VE) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)
Diagnostic accuracy for occlusal caries detection at the caries detection level (D0 versus D1-D4) · 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)
Sensitivity 0.59 [0.52, 0.67]3 studiesUngraded
Observed population vs Not applicable
Dental information from relatives · Mothers of preschool children in Sharjah · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Prevalence 271 studyUngraded
Observed population vs Not applicable
Mean dmft · Emirati preschool children in Ras Al Khaimah nurseries · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
MEAN 3.07 [2.81, 3.34]1 study · 540 participantsUngraded
Hall Technique (sealing with a preformed metal crown) vs Non-restorative cavity control (NRCC)
Efficiency, costs or cost-effectiveness · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious… · Primary dentition
Interventions for treating cavitated or dentine carious lesions (2021) · Cochrane
Cost-effectiveness reported narratively: HT found more cost-effective than NRCC in primary teeth (Santamaria 2018); not GRADE-rated.1 studyUngraded
Chemotherapy regimen A (+/- locoregional treatment) vs Chemotherapy regimen B (+/- locoregional treatment)
Locoregional control, chemotherapy regimen A vs regimen B · 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
Locoregional control reported in 12 studies; not pooled. Olasz 2000 RR 0.50 (0.26 to 0.96); Prevost 2005 RR 1.48 (1.04 to 2.11); Molinari 1982 RR 0.35 (0.19 to 0.66).12 studiesUngraded
Rubber dam isolation and moisture control (alone or with saliva aspiration) vs Cotton rolls (with or without saliva aspiration)
Clinical evaluation of restoration's quality · Dental patients undergoing direct or indirect restorative treatment (no age or gender restriction) · 6, 12, 18 months, Non-carious cervical lesions (composite restoration)
Rubber dam isolation for restorative treatment in dental patients (2021) · Cochrane
Loguercio 2015: no significant differences (P>0.05) in marginal staining and marginal adaptation of NCCL restorations between rubber dam and cotton rolls/retraction cords at 6, 12 and 18 months.1 study · 30 participantsUngraded
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 · Overall
Association Between the TaqI (rs731236 T>C) Gene Polymorphism and Dental Caries Risk: A Meta-analysis. (2021)
OR 1.45 [0.96, 2.19]7 studies · 2470 participantsUngraded
Visual classification: ERK (Ekstrand-Ricketts-Kidd system) vs Reference standard (histology, excavation, radiographs/microCT, or tooth separation)
Sensitivity 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
Sensitivity 0.85 [0.74, 0.92]15 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), Reference standard: histology (non-CBCT)
Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane
Sensitivity 0.46 [0.39, 0.53]64 studiesUngraded
Laser fluorescence pen (DIAGNOdent 2190/Pen) vs Histological validation (serial sectioning, grinding, hemisection, or microradiography)
Diagnostic accuracy for occlusal caries detection at the caries detection level (D0 versus D1-D4) · 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, 0.87]2 studiesUngraded
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)
Outcome NR · Samples with a low (<15%) prevalence of caries into dentine (d3/D3); target condition = non-cavitated enamel caries. · Up to 3 months between index test and reference standard (in vivo studies)
Electrical conductance for the detection of dental caries (2021) · Cochrane
No eligible studies. 'No studies reported the inclusion of a low prevalence (0% to 14%) of d3/D3 of tooth surfaces'; all included studies reported d3/D3 prevalence of 15% or above, so the planned low-prevalence…0 studiesNo studies
Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances
Lesion area (decalcification area, pixels) · Adults undergoing orthodontic treatment · 3 months, Adults
Impact of Aligners and Fixed Appliances on Oral Health during Orthodontic Treatment: A Systematic Review and… (2021)
MD 80.50 [60.52, 100.48]1 studyUngraded
Visual examination (VE) vs Direct visual examination after tooth separation or bioptical cavity preparation
Diagnostic accuracy for proximal caries detection (dentin detection level) · Patients with permanent posterior teeth, proximal surfaces assessed clinically (in vivo) · Dentin detection level
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
Sensitivity 0.32 [0.07, 0.74]2 studiesUngraded
Rubber dam isolation and moisture control (alone or with saliva aspiration) vs Cotton rolls (with or without saliva aspiration)
Survival rate of restorations (12 months) · Dental patients undergoing direct or indirect restorative treatment (no age or gender restriction) · 12 months, Non-carious cervical lesions (composite restoration)
Rubber dam isolation for restorative treatment in dental patients (2021) · Cochrane
OR 1.38 [0.45, 4.28]1 study · 30 participantsVery low
Observed population vs Not applicable
Dental caries prevalence · Emirati preschool children in Ras Al Khaimah nurseries · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Prevalence 74.11 study · 540 participantsUngraded
Rubber dam isolation and moisture control (alone or with saliva aspiration) vs Cotton rolls (with or without saliva aspiration)
Participant acceptance/satisfaction · Dental patients undergoing direct or indirect restorative treatment (no age or gender restriction) · Non-carious cervical lesions (composite restoration)
Rubber dam isolation for restorative treatment in dental patients (2021) · Cochrane
Evidence did not support higher acceptance/preference for rubber dam than cotton rolls (P = 0.85 from binomial test on 28 participants; very low-certainty evidence) (Loguercio 2015).1 study · 28 participantsVery low
Visual examination (VE) 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 0.99 [0.94, 0.999]1 studyUngraded
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)
DOR 67.0 [14.7, 304.9]1 studyUngraded
TaqI (rs731236 T>C) polymorphism in the VDR gene (C allele / variant genotype) vs CC genotype vs CT/TT genotype (recessive 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 1.45 [0.93, 2.26]5 studies · 1932 participantsUngraded
Less frequent tooth brushing (< twice daily) vs More frequent tooth brushing (>= twice daily)
Dental caries · Healthy children and adolescents in the United Arab Emirates
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Higher tooth-brushing frequency was protective against caries in Kowash et al. and Hashim et al. (brushing >=twice vs less than daily aRR 0.8, 95% CI 0.64-0.93). A contradictory (non-protective) finding was reported by…NRUngraded
Concomitant (concurrent) chemoradiotherapy vs Radiotherapy alone (non-resectable tumours)
Overall survival, concurrent chemoradiotherapy vs radiotherapy alone (pooled) · 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 0.74 [0.67, 0.83]24 studies · 2852 participantsModerate
Observed population vs Not applicable
Unhealthy gums/gingivitis in all oral regions · 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)
Prevalence 68.91 study · 803 participantsUngraded
Fluorescence-based devices vs Dental imaging (analog or digital radiographs)
Difference in sensitivity · Children or adults asymptomatic or suspected of enamel caries; extracted teeth · Analysis 1: fully within-person comparison
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2021)
Difference in sensitivity 0.23 [0.05, 0.39]19 studies · 2849 participantsUngraded
Cone beam computed tomography (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), Occlusal surfaces (CBCT)
Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane
Specificity 0.54 [0.31, 0.75]NRUngraded
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)
Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane
Sensitivity 0.47 [0.40, 0.53]77 studiesLow
Coating material (bonding material or sealant) WITH fluoride release vs Coating material WITHOUT fluoride release
Initiation of white spot lesions (WSL), visual-tactile assessment · Patients of any age (11-40 years) receiving comprehensive/fixed orthodontic treatment with fixed appliances · 1-24 months follow-up
Efficacy of sealants and bonding materials during fixed orthodontic treatment to prevent enamel… (2021)
RR 0.84 [0.70, 1.01]10 studies · 4705 participantsVery low
Conventional bitewing radiography (E-speed film) vs Cavity preparation or biopsy (operative validation)
Diagnostic accuracy for occlusal caries detection at the dentin caries detection level (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)
Sensitivity 0.76 [0.61, 0.87]2 studiesUngraded
Bleaching before resin infiltration (bleaching + infiltration) vs Resin infiltration alone
Masking effect (esthetic improvement) · Patients with dental fluorosis
Efficacy of resin infiltration to mask post-orthodontic or non-post-orthodontic white spot lesions or… (2021)
MD -0.30 [-0.98, 0.39]2 studiesModerate
Non-selective carious tissue removal and conventional restoration (CR) vs Stepwise carious tissue removal (SW)
Failure of therapy · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious… · 12 months, Deep lesions, primary dentition
Interventions for treating cavitated or dentine carious lesions (2021) · Cochrane
OR 2.43 [0.65, 9.12]1 study · 63 participantsVery low
Lower family socioeconomic status / income vs Higher socioeconomic status / income
Dental caries · Healthy children and adolescents in the United Arab Emirates
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Findings were contradictory. Hashim et al. found children from low-income families had higher odds of severe early childhood caries (OR 1.43, 95% CI 1.11-1.85), and Ahmad et al. reported significantly higher DMFT in…NRUngraded
Fibre-optic transillumination (FOTI) vs Histological validation (in vitro) or direct visual examination after tooth separation / bioptical cavity preparation (in vivo)
Diagnostic accuracy for proximal caries detection · Permanent posterior teeth, proximal surfaces (in vitro extracted teeth and in vivo patients)
Systematic review and meta-analysis of diagnostic studies of proximal surface caries. (2021)
no estimate extracted0 studiesNo studies
Sealing using sealant materials vs No treatment
Lesion progression · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious… · Non-cavitated lesions, permanent dentition
Interventions for treating cavitated or dentine carious lesions (2021) · Cochrane
Lesion progression reported narratively: da Silveira 2012 found 3/27 lesions progressed after 1 year; not pooled and not GRADE-rated.1 studyUngraded
Micro-invasive treatment (resin infiltration or sealing) vs Non-invasive / control treatment
Radiographic proximal caries lesion progression · Patients with non-cavitated proximal (approximal) caries lesions (primary or permanent dentition) · Longest available follow-up, Permanent dentition
Infiltration and sealing for managing non-cavitated proximal lesions: a systematic review and meta-analysis. (2021)
OR 0.20 [0.14, 0.28]12 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)
DOR 23.09 [7.01, 76.04]5 studiesUngraded
Observed population vs Not applicable
Tooth brushing less than once daily, females in 2016 · Nationally surveyed adolescents in the United Arab Emirates · Overall
Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021)
Prevalence 28.31 study · 24220 participantsUngraded
COE with vital rinsing (toluidine blue/tolonium chloride) vs Conventional oral examination (COE) alone
Sensitivity (COE alone 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
Sensitivity 0.50 [0.12, 0.88]1 study · 3895 participantsModerate
Maternal smoking during pregnancy vs No maternal smoking during pregnancy
Dental caries · Children
Correlation Between Maternal Smoking During Pregnancy and Dental Caries in Children: A Systematic Review and… (2021)
RR 1.26 [1.07, 1.48]3 studiesUngraded
Rubber dam isolation vs Isolite system
Survival rate of the restorations · Dental patients undergoing restorative treatment (no age or gender restriction)
Rubber dam isolation for restorative treatment in dental patients (2021) · Cochrane
no estimate extracted0 studiesNo studies
Selective carious tissue removal (selective excavation, SE) vs Stepwise carious tissue removal (SW)
Failure of therapy · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious… · 12-24 months, Deep lesions, primary dentition
Interventions for treating cavitated or dentine carious lesions (2021) · Cochrane
OR 2.05 [0.49, 8.62]2 studies · 126 participantsVery low
COE with vital rinsing (toluidine blue/tolonium chloride) vs Conventional oral examination (COE) alone
Sensitivity (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
Sensitivity 0.40 [0.05, 0.85]1 study · 4080 participantsModerate