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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 |
|---|---|---|---|
Older age vs Younger age 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 0.42 [0.27, 0.567] | 1 study · 803 participants | Ungraded |
Systemic sclerosis (SSc / scleroderma) vs SSc-free individuals (controls) Bleeding on probing (BOP) · 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 1.054 [-0.973, 3.081] | 5 studies | Ungraded |
Intervention NR Mean DMFT (decayed, missing, filled permanent teeth) · Individuals with permanent dentition in East Africa · Uganda Prevalence of Dental Caries and Associated Factors in East Africa, 2000-2020: Systematic Review and… (2021) | MEAN 2.876 [2.186, 3.565] | NR | Ungraded |
Transillumination and optical coherence tomography devices (all illumination devices combined: NIR, OCT, and FOTI/DIFOTI) vs Reference standard: histology, or enhanced visual examination with or without radiographs (also operative excavation, tooth separation, or microcomputed tomography) Sensitivity 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 | Sensitivity 0.75 [0.62, 0.85] | 23 studies | Low |
Fluoride concentration relative to the acceptable range (electrometric ion-selective electrode measurement; acceptable range mostly 0.6-0.8 ppmF) vs None (descriptive proportion meta-analysis) Water samples with fluoride concentration above the acceptable range · Artificially fluoridated public water supply in Brazilian cities (water samples under external control) · Region: Northeast Brazil External control of fluoridation in the public water supplies of Brazilian cities as a strategy against… (2021) | Prevalence 0.2 | NR | Ungraded |
Sugar-free chewing gum (any polyol-based SFG; predominantly xylitol) vs Pooled controls: no gum, placebo/control gum, probiotic, or fluoride varnish Streptococcus mutans load in the oral cavity (saliva and/or dental plaque) · Adults and children (general population) · Final/end-of-study time point (follow-up 2 weeks to 18 months), Overall (vs all controls) A systematic review and meta-analysis of the role of sugar-free chewing gum on Streptococcus mutans. (2021) | SMD -0.42 [-0.60, -0.25] | 13 studies · 1335 participants | Ungraded |
Oral health knowledge, attitudes and practices assessment vs None (descriptive prevalence review) Oral health knowledge, attitudes and practices (mothers/caregivers) · Mothers and caregivers of children in the United Arab Emirates Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | Mahmoud et al. found Sharjah mothers had higher-than-average knowledge and excellent attitudes but mostly improper practices and low dental-service utilization; knowledge/practices were associated with mothers'… | NR | 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) · City: Lahore Prevalence of dental caries in Pakistan: a systematic review and meta-analysis. (2021) | Prevalence 57.604 [47.727, 67.183] | 4 studies | Ungraded |
Dental plaque assessment (plaque score/index) vs None (descriptive prevalence review) Dental plaque levels · Children in the United Arab Emirates (Ajman, Sharjah) Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | Hashim et al. (Ajman, 5-6-year-olds) reported a mean plaque score of 0.67; higher snack consumption was associated with higher plaque (adjusted difference 0.13, 95% CI 0.02-0.24) and brushing >=twice daily with lower… | NR | Ungraded |
Observed population vs Not applicable Molar-incisor hypomineralization prevalence · School children in Dubai governmental schools · Overall Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | Prevalence 7.59 | 1 study · 779 participants | Ungraded |
0-19 remaining teeth vs 20-32 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 Lower Number of Teeth Is Related to Higher Risks for ACVD and Death-Systematic Review and Meta-Analyses of… (2021) | RR 1.98 [1.86, 2.10] | 4 studies · 191129 participants | Moderate |
Maternal smoking during pregnancy vs No maternal smoking during pregnancy Childhood dental caries · Children in cross-sectional studies · Sensitivity: excluded Tanaka et al. 2009 Correlation Between Maternal Smoking During Pregnancy and Dental Caries in Children: A Systematic Review and… (2021) | OR 1.56 [1.46, 1.66] | 5 studies | Ungraded |
Digital bitewing radiography, sensor-based (CCD/CMOS) 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 0.74 | 12 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), Low prevalence of dentine caries (0% to 14%) Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries (2021) · Cochrane | Specificity 0.73 [0.51, 0.88] | NR | Ungraded |
0-19 remaining teeth vs 20-32 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 1.19 [1.13, 1.26] | 4 studies · 191129 participants | Moderate |
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 vivo / clinical (non-CBCT) Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane | Specificity 0.89 [0.78, 0.95] | 17 studies | Ungraded |
Systemic sclerosis (SSc / scleroderma) vs SSc-free individuals (controls) Attachment loss (AL) · 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 2.584 [0.321, 4.846] | 4 studies | 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, All caries-risk levels (caries-risk subset) Infiltration and sealing for managing non-cavitated proximal lesions: a systematic review and meta-analysis. (2021) | OR 0.20 [0.14, 0.28] | 9 studies | Ungraded |
Conventional bitewing radiography (D-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) | AUC 0.60 | 1 study | 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), Occlusal surfaces (non-CBCT) Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane | Sensitivity 0.45 [0.35, 0.54] | NR | Ungraded |
Systemic sclerosis (SSc / scleroderma) vs SSc-free individuals (controls) Number of filled 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 -0.119 [-0.302, 0.063] | 2 studies | Ungraded |
Mouth self-examination (MSE) 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) Sensitivity for detection of oral cavity cancer/OPMD · 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 | Summary of findings 2 (no pooled analysis): sensitivity 0.18 (95% CI 0.13 to 0.24), 0.09 (95% CI 0.04 to 0.15), 0.43 (95% CI 0.24 to 0.63), and 0.33 (95% CI 0.10 to 0.65) across the 4 studies. Prevalence 0.6% to 63.6%.… | 4 studies · 35059 participants | Very low |
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 · Overall Association Between the TaqI (rs731236 T>C) Gene Polymorphism and Dental Caries Risk: A Meta-analysis. (2021) | OR 1.41 [0.89, 2.22] | 7 studies · 2470 participants | Ungraded |
Intervention NR Mean DMFT (decayed, missing, filled permanent teeth) · Individuals with permanent dentition in East Africa · Sudan Prevalence of Dental Caries and Associated Factors in East Africa, 2000-2020: Systematic Review and… (2021) | MEAN 3.146 [1.050, 5.242] | NR | 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), Histology reference standard Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries (2021) · Cochrane | Sensitivity 0.87 [0.82, 0.90] | NR | Ungraded |
Conventional bitewing radiography (D-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 0.42 [0.18, 0.69] | 1 study | Ungraded |
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) | DOR 8.01 [4.04, 15.88] | 7 studies | 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), Primary dentition (non-CBCT) Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane | Sensitivity 0.52 [0.40, 0.63] | NR | Ungraded |
Fibre-optic transillumination (FOTI) 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) | DOR 38.33 [10.15, 144.77] | 1 study | Ungraded |
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 · Dentition: Mixed dentition caries Association Between the TaqI (rs731236 T>C) Gene Polymorphism and Dental Caries Risk: A Meta-analysis. (2021) | OR 1.34 [0.75, 2.40] | 2 studies · 270 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), Proximal surfaces (non-CBCT) Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane | Sensitivity 0.47 [0.39, 0.55] | NR | 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), Reference standard: enhanced visual (non-CBCT) Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane | Specificity 0.91 [0.77, 0.97] | 8 studies | Ungraded |
Fluoride concentration relative to the acceptable range (electrometric ion-selective electrode measurement; acceptable range mostly 0.6-0.8 ppmF) vs None (descriptive proportion meta-analysis) Water samples with fluoride concentration outside the acceptable range · Artificially fluoridated public water supply in Brazilian cities (water samples under external control) · Region: Northeast Brazil External control of fluoridation in the public water supplies of Brazilian cities as a strategy against… (2021) | Prevalence 81.1 [65.3, 92.9] | NR | Ungraded |
0-10 remaining teeth vs 25-32 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 Lower Number of Teeth Is Related to Higher Risks for ACVD and Death-Systematic Review and Meta-Analyses of… (2021) | RR 2.65 [1.84, 3.81] | 4 studies · 193546 participants | High |
Resin infiltration (Icon) vs Non-invasive treatment Radiographic proximal caries lesion progression · Patients with non-cavitated proximal caries lesions · 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 [0.05, 0.37] | 2 studies | 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, Modified enamel decalcification index (Cronan 2012) Efficacy of resin infiltration to mask post-orthodontic or non-post-orthodontic white spot lesions or… (2021) | SMD 0.98 [0.83, 1.13] | 1 study · 768 participants | 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), Reference standard: histology (non-CBCT) Imaging modalities to inform the detection and diagnosis of early caries (2021) · Cochrane | Specificity 0.88 [0.83, 0.92] | 64 studies | Ungraded |
Resin infiltration (Icon) vs Non-invasive treatment Radiographic proximal caries lesion progression · Patients with non-cavitated proximal caries lesions · Longest available follow-up, Caries risk: low to moderate Infiltration and sealing for managing non-cavitated proximal lesions: a systematic review and meta-analysis. (2021) | OR 0.38 [0.18, 0.81] | 1 study | 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) | Sensitivity 0.63 [0.58, 0.68] | 3 studies | Ungraded |
Fluoride concentration relative to the acceptable range (electrometric ion-selective electrode measurement; acceptable range mostly 0.6-0.8 ppmF) vs None (descriptive proportion meta-analysis) Water samples with fluoride concentration below the acceptable range · Artificially fluoridated public water supply in Brazilian cities (water samples under external control) · Region: Southeast Brazil External control of fluoridation in the public water supplies of Brazilian cities as a strategy against… (2021) | Prevalence 24.6 | NR | Ungraded |
Special health care needs vs Not applicable Dental caries prevalence · Arab children with special health care needs in Ras Al Khaimah · Overall Oral Health of Children and Adolescents in the United Arab Emirates: A Systematic Review of the Past Decade. (2021) | Prevalence 85.2 | 1 study | 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), Permanent dentition Visual or visual‐tactile examination to detect and inform the diagnosis of enamel caries (2021) · Cochrane | Specificity 0.76 [0.69, 0.83] | NR | Ungraded |
Intervention NR New dental caries development · Onabotulinumtoxin A open-label, no control (Møller 2015) Oral health effects of botulinum toxin treatment for drooling: a systematic review. (2021) | Event count (narrative; no estimate) No cases of tooth decay (0 caries events) | 1 study | Ungraded |
Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances S. mutans counts (5th-root transformed) · Adolescents/teenagers undergoing orthodontic treatment · 1 month, Adolescents Impact of Aligners and Fixed Appliances on Oral Health during Orthodontic Treatment: A Systematic Review and… (2021) | MD -2.22 [-6.82, 2.38] | 1 study | Ungraded |
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) | Sensitivity 0.69 [0.51, 0.82] | 2 studies | Ungraded |
Hall Technique (sealing with a preformed metal crown) vs Non-restorative cavity control (NRCC) Failure of therapy · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious… · 30 months, Cavitated lesions, primary dentition Interventions for treating cavitated or dentine carious lesions (2021) · Cochrane | OR 0.19 [0.05, 0.74] | 1 study · 84 participants | Very low |
Female sex vs Male sex 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 0.41 [0.01, 0.81] | 1 study · 803 participants | Ungraded |
Xylitol-only sugar-free chewing gum vs Pooled controls: no gum, placebo/control gum, probiotic, or fluoride varnish Streptococcus mutans load in the oral cavity (saliva and/or dental plaque) · Adults and children (general population) · Final/end-of-study time point (follow-up 2 weeks to 18 months), Overall (vs all controls) A systematic review and meta-analysis of the role of sugar-free chewing gum on Streptococcus mutans. (2021) | SMD -0.46 [-0.64, -0.28] | 12 studies · 1295 participants | Ungraded |
Non-selective carious tissue removal and conventional restoration (CR) vs Non-restorative cavity control (NRCC) Failure of therapy · Children and/or adults with permanent or primary teeth, vital (sensitive) pulps, and cavitated or dentine carious… · 30 months, Cavitated lesions, primary dentition Interventions for treating cavitated or dentine carious lesions (2021) · Cochrane | OR 1.16 [0.5, 2.71] | 1 study · 102 participants | Very low |
Intervention NR Dental caries prevalence · General population (children and adults) in East Africa · Tanzania Prevalence of Dental Caries and Associated Factors in East Africa, 2000-2020: Systematic Review and… (2021) | Prevalence 0.307 [0.215, 0.399] | NR | Ungraded |