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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.
5,762 questions in 263 reviews · Dental caries
current versionsNo 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.
| Question | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Conventional bitewing radiography, D-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) | Sensitivity 0.19 [0.13, 0.28] | 2 studies | Ungraded |
Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances Full-mouth bleeding score (FMBS) · Adolescents/teenagers undergoing orthodontic treatment · 12 months, Adolescents Impact of Aligners and Fixed Appliances on Oral Health during Orthodontic Treatment: A Systematic Review and… (2021) | MD -20.44 [-22.98, -17.90] | 1 study | Ungraded |
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 · Dentition: Mixed dentition caries Association Between the TaqI (rs731236 T>C) Gene Polymorphism and Dental Caries Risk: A Meta-analysis. (2021) | OR 1.26 [0.87, 1.82] | 2 studies · 270 participants | Ungraded |
Resin infiltration vs Fluoride varnish Optical/esthetic improvement (DIAGNOdent reading) · Patients (mainly children) with white spot lesions (WSL) · 3 to 6 months, Severe lesions, DIAGNOdent score >14 (Gozetici et al. 2019) Efficacy of resin infiltration to mask post-orthodontic or non-post-orthodontic white spot lesions or… (2021) | MD 13.15 [3.98, 22.32] | 1 study · 40 participants | Ungraded |
Sealant or coating agent (with or without fluoride release) applied to teeth with fixed appliances vs No sealant (untreated control teeth) Initiation of white spot lesions (WSL), visual-tactile assessment · Patients of any age (11-40 years) receiving comprehensive/fixed orthodontic treatment with fixed appliances · 3-27 months follow-up Efficacy of sealants and bonding materials during fixed orthodontic treatment to prevent enamel… (2021) | RR 0.70 [0.53, 0.93] | 6 studies · 2314 participants | Very low |
Ulcerative colitis (UC) vs Healthy controls without IBD Periodontal disease (periodontitis) coincidence · Patients with ulcerative colitis (UC) and controls without IBD; adults, both sexes · Ulcerative colitis (UC) vs healthy controls Oral Health Status in Patients with Inflammatory Bowel Diseases: A Systematic Review. (2021) | OR 3.25 [2.23, 4.74] | 5 studies | Ungraded |
Early childhood caries (ECC) vs ECC-free children (caries-free controls) Iron deficiency anemia (IDA) · Preschool children (<6 years) · Overall Iron deficiency and early childhood caries: a systematic review and meta-analysis. (2021) | OR 2.74 [2.41, 3.11] | 5 studies · 8764 participants | Ungraded |
Higher number of lost teeth (per one additional lost tooth) vs Fewer lost teeth (continuous, per-tooth increment) All-cause mortality (ACM) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies · Adjusted for age/sex Lower Number of Teeth Is Related to Higher Risks for ACVD and Death-Systematic Review and Meta-Analyses of… (2021) | HR 1.02 [1.01, 1.04] | 5 studies · 4421245 participants | Ungraded |
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) | AUC 0.90 | 2 studies | Ungraded |
Digital bitewing radiography, phosphor plate (PSP) 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 26.06 [7.29, 93.21] | 2 studies | Ungraded |
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), Approximal surface Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries (2021) · Cochrane | Specificity 0.83 [0.74, 0.89] | NR | Ungraded |
Higher number of lost teeth (per one additional lost tooth) vs Fewer lost teeth (continuous, per-tooth increment) Atherosclerotic cardiovascular disease (ACVD)-related events (morbidity and mortality) · Adults (any age) with a known number of remaining teeth, followed prospectively in cohort studies · Adjusted for age/sex Lower Number of Teeth Is Related to Higher Risks for ACVD and Death-Systematic Review and Meta-Analyses of… (2021) | HR 1.01 [1.00, 1.03] | 7 studies · 4546574 participants | Ungraded |
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 on surfaces with pit and fissure sealants · 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), Pit and fissure sealants Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries (2021) · Cochrane | Pre-specified heterogeneity investigation of surfaces with previously applied pit and fissure sealants: no studies reported the inclusion of sealants. | 0 studies | No studies |
Digital bitewing radiography, sensor-based (CCD/CMOS) 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) | DOR 24.4 [0.44, 1359.98] | 1 study | Ungraded |
Observed population vs Not applicable Mean dmft · Five-year-old preschool children in Sharjah · Males Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | MEAN 6.41 | 1 study · 403 participants | Ungraded |
Soft drink consumption vs Reference consumption 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 0.31 [0.14, 0.47] | 1 study · 803 participants | Ungraded |
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, Caries risk: high Infiltration and sealing for managing non-cavitated proximal lesions: a systematic review and meta-analysis. (2021) | OR 0.14 [0.07, 0.28] | 3 studies | Ungraded |
Dental caries (ascertained mostly by WHO criteria/DMFT; also CAST, ICDAS, or clinical examination) vs None (descriptive prevalence meta-analysis) Dental caries prevalence · General Pakistani population (all ages and both sexes; predominantly children and adolescents) · Province: Punjab Prevalence of dental caries in Pakistan: a systematic review and meta-analysis. (2021) | Prevalence 55.445 [44.174, 66.44] | 13 studies | Ungraded |
Incarcerated mother vs Comparison children Dental caries prevalence · Preschool children of incarcerated mothers in UAE prison nurseries · Overall Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | Prevalence 89.8 | 1 study | Ungraded |
Cerebral palsy (oral health status) vs Age- and gender-matched healthy children Oral health status (caries, gingivitis, calculus, treatment indices) · Children with cerebral palsy in the United Arab Emirates (Dubai) Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | Al Hashmi et al. (Dubai) reported caries in 53% of children with cerebral palsy (mean DMFT 2.83) and gingivitis in 58.8%, similar to matched controls, but a significantly higher calculus index (0.56 vs 0.07) and more… | 1 study | Ungraded |
Digital bitewing radiography, sensor-based (CCD/CMOS) 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) | AUC 0.82 | 1 study | Ungraded |
Systemic sclerosis (SSc / scleroderma) vs SSc-free individuals (controls) Maximum interincisor distance (mouth opening) · 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 -1.061 [-1.546, -0.576] | 4 studies | Ungraded |
Cerebral palsy vs Healthy age- and sex-matched controls Mean DMFT · 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) | MEAN 2.83 | 1 study | Ungraded |
Resin infiltration vs Untreated control (natural remineralization) Optical/esthetic improvement (visual-tactile assessment) · Patients with post-orthodontic white spot lesions (WSL) · 4 weeks to 6 months, Spectroscopy delta-E (Knosel et al. 2013) Efficacy of resin infiltration to mask post-orthodontic or non-post-orthodontic white spot lesions or… (2021) | SMD 0.63 [0.26, 1.01] | 1 study · 115 participants | Ungraded |
COE with vital rinsing (toluidine blue/tolonium chloride) vs Reference standard: examination and clinical evaluation by a physician/clinician with specialist knowledge or training (long-term follow-up accepted for those screened negative) 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 study evaluated COE with vital rinse as a stand-alone screen against the reference standard in this version. | 0 studies | No studies |
Observed population vs Not applicable Restorative index · 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) | Proportion 6.4 | 1 study · 176 participants | Ungraded |
Surgery +/- radiotherapy + (adjuvant) chemotherapy vs Surgery +/- radiotherapy alone (observation or adjuvant radiotherapy only) Disease-free survival, adjuvant concurrent chemoradiation vs adjuvant radiotherapy (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 0.84 [0.72, 0.97] | 4 studies | Ungraded |
Highest plaque category vs Lowest plaque category DMFT (association with plaque) · Children aged 5-6 years in Ajman schools · Highest versus lowest plaque category Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | ARR 4.77 [3.67, 6.19] | 1 study · 1036 participants | Ungraded |
Early childhood caries (ECC) vs ECC-free children (caries-free controls) Serum ferritin level · Preschool children (<6 years) · Overall Iron deficiency and early childhood caries: a systematic review and meta-analysis. (2021) | WMD -5.80 [-11.97, 0.37] | 5 studies · 832 participants | Ungraded |
Conventional bitewing radiography (D-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) | DOR 11.79 [2.43, 57.24] | 2 studies | Ungraded |
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) 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), Non-histology reference standard (excavation, radiographs, separation) Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries (2021) · Cochrane | Sensitivity 0.78 [0.48, 0.93] | NR | Ungraded |
Observed population vs Not applicable Enamel dissolution prevalence · 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) | Prevalence 55.0 | 1 study · 403 participants | Ungraded |
Laser fluorescence (DIAGNOdent 2190/pen) 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) | DOR 2.18 [0.24, 19.95] | 3 studies | Ungraded |
Fluorescence-based devices vs Dental imaging (analog or digital radiographs) Difference in specificity · 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 specificity -0.03 [-0.14, 0.06] | 19 studies · 2849 participants | Ungraded |
Digital bitewing radiography, sensor-based (CCD/CMOS) 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) | AUC 0.90 | 4 studies | Ungraded |
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 · Children/adolescents/adults or extracted teeth; target condition = non-cavitated enamel caries on PROXIMAL… · 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. All included studies assessed occlusal surfaces only ('All studies assessed the use of the electrical conductance devices on occlusal surfaces.'); proximal surfaces were a planned surface subgroup… | 0 studies | No studies |
Observed population vs Not applicable Exposed dentin prevalence · 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) | Prevalence 3.7 | 1 study · 403 participants | Ungraded |
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), Setting: in vitro (non-CBCT) Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane | Sensitivity 0.44 [0.37, 0.50] | NR | Ungraded |
Coating material (bonding material or sealant) WITH fluoride release vs Coating material WITHOUT fluoride release White spot lesions assessed by laser fluorescence (DIAGNOdent) · Patients of any age (11-40 years) receiving comprehensive/fixed orthodontic treatment with fixed appliances Efficacy of sealants and bonding materials during fixed orthodontic treatment to prevent enamel… (2021) | Laser fluorescence (DIAGNOdent) was assessed in 3 studies comparing coating with vs without fluoride release, but meta-analysis could not be performed (results reported using incompatible continuous/categorical formats… | 3 studies | Ungraded |
Frequent carbohydrate / sugary food intake vs Infrequent carbohydrate intake 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 1.575 [1.13, 3.051] | 11 studies · 5651 participants | Ungraded |
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) | OR 1.57 [1.47, 1.67] | 6 studies | Ungraded |
Systemic sclerosis (SSc / scleroderma) vs SSc-free individuals (controls) Number of 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 -0.947 [-2.131, 0.237] | 3 studies | Ungraded |
Conventional bitewing radiography (E-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) | Specificity 0.95 [0.53, 0.997] | 2 studies | Ungraded |
Emirati nationality vs Non-Emirati nationality Mean dmft, overall · Preschool children in Abu Dhabi nurseries · Overall Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | MEAN 1.68 | 1 study · 186 participants | Ungraded |
Optical coherence tomography (OCT) vs Reference standard: histology, or enhanced visual examination with or without radiographs (also operative excavation, tooth separation, or microcomputed tomography) Specificity for detection of enamel/early caries · Children or adults presenting asymptomatically or suspected of having enamel caries (clinical/in vivo studies);… · Up to 3 months between index test and reference standard (in vivo; in vitro no limit if stored appropriately) Transillumination and optical coherence tomography for the detection and diagnosis of enamel caries (2021) · Cochrane | Specificity 0.83 [0.68, 0.91] | 10 studies | Ungraded |
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), Sensitivity analysis: low dentine-caries prevalence <15% Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane | Specificity 0.91 [0.87, 0.94] | NR | Ungraded |
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 · Dentition: Permanent tooth caries Association Between the TaqI (rs731236 T>C) Gene Polymorphism and Dental Caries Risk: A Meta-analysis. (2021) | OR 1.44 [1.03, 2.00] | 3 studies · 1271 participants | Ungraded |
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) | AUC 0.77 | 3 studies | Ungraded |
Emirati nationality vs Non-Emirati nationality Dental caries prevalence · Preschool children in Abu Dhabi nurseries · Overall Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | Prevalence 41 | 1 study · 186 participants | Ungraded |
Surgery +/- radiotherapy + (adjuvant) chemotherapy vs Surgery +/- radiotherapy alone (observation or adjuvant radiotherapy only) Overall survival, adjuvant concurrent chemoradiation vs adjuvant radiotherapy · 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 0.84 [0.72, 0.98] | 4 studies · 1097 participants | Moderate |