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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)

555 questions in 21 reviews · intervention: Caries detection/diagnosis · outcome domain: Diagnostic accuracy

current versions
No studies 19 · 3.4%Ungraded 489 · 88.1%Very low 17 · 3.1%Low 23 · 4.1%Moderate 7 · 1.3%High 0 · 0%

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.

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QuestionEffectEvidenceStatus / GRADE
Quantitative light-induced fluorescence (QLF) vs Reference standard (histology; some ICDAS/radiography)
Occlusal caries detection: specificity · Extracted human teeth (in vitro); permanent and primary teeth, occlusal surfaces · Primary dentition
Diagnostic accuracy of quantitative light-induced fluorescence in detecting caries of various types and… (2025)
Specificity 0.812 studiesUngraded
Intervention NR
Sensitivity · Imaging modality: Bitewing radiographs
Examining the diagnostic accuracy of artificial intelligence for detecting dental caries across a range of… (2025)
Sensitivity 0.81 [0.72, 0.91]5 studiesUngraded
Artificial intelligence algorithms for caries detection vs Dental expert or visual-tactile/clinical assessment as reference standard
Diagnostic odds ratio · Dental images or diagnostic tests for dental caries detection · Overall (all imaging modalities pooled)
Examining the diagnostic accuracy of artificial intelligence for detecting dental caries across a range of… (2025)
DOR 70.9 [44.9, 111.9]20 studiesUngraded
Intervention NR
Specificity · Imaging modality: Bitewing radiographs
Examining the diagnostic accuracy of artificial intelligence for detecting dental caries across a range of… (2025)
Specificity 0.89 [0.84, 0.95]5 studiesUngraded
Quantitative light-induced fluorescence (QLF) vs Reference standard (ICDAS II visual examination, ADA classification, bitewing radiography)
Occlusal caries detection: specificity · Patients (in vivo); permanent and primary teeth, occlusal surfaces · Overall (all dentition)
Diagnostic accuracy of quantitative light-induced fluorescence in detecting caries of various types and… (2025)
Specificity 0.824 studiesUngraded
Teledentistry (index test): dental caries diagnosis from photographs taken with DSLR or smartphone cameras; store-and-forward vs Visual/clinical dental examination (reference standard)
Intra-examiner reliability · Children and adults with primary or permanent dentition undergoing dental caries assessment · Cross-sectional diagnostic accuracy (index test vs reference standard, in-vivo), Overall (studies reporting intra-examiner reliability; narrative synthesis)
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
Intra-examiner reliability (kappa) reported in 6 studies, ranging from 0.52 to 1.00. No pooled estimate.6 studiesUngraded
Teledentistry diagnosis using DSLR or smartphone extra-oral photographs vs Visual or clinical examination
Positive predictive value for dental caries diagnosis · Children and adults with primary or permanent dentition · Overall
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
no estimate extracted10 studiesUngraded
Teledentistry diagnosis using DSLR or smartphone extra-oral photographs vs Visual or clinical examination
Negative predictive value for dental caries diagnosis · Children and adults with primary or permanent dentition · Overall
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
no estimate extracted10 studiesUngraded
Teledentistry (index test): dental caries diagnosis from photographs taken with DSLR or smartphone cameras; store-and-forward vs Visual/clinical dental examination (reference standard)
Overall diagnostic accuracy (agreement) · Children and adults with primary or permanent dentition undergoing dental caries assessment · Cross-sectional diagnostic accuracy (index test vs reference standard, in-vivo), Overall (studies reporting accuracy; narrative synthesis)
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
Accuracy 92.9% to 97.6%5 studiesUngraded
Teledentistry (index test): dental caries diagnosis from photographs taken with DSLR or smartphone cameras; store-and-forward vs Visual/clinical dental examination (reference standard)
Specificity · Children and adults with primary or permanent dentition undergoing dental caries assessment · Cross-sectional diagnostic accuracy (index test vs reference standard, in-vivo), Overall (studies reporting specificity; narrative synthesis)
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
Specificity ranged from 83% to 100% across studies (reported in 13 of 19 studies). No pooled estimate; meta-analysis not performed.13 studiesUngraded
Teledentistry (index test): dental caries diagnosis from photographs taken with DSLR or smartphone cameras; store-and-forward vs Visual/clinical dental examination (reference standard)
Positive predictive value · Children and adults with primary or permanent dentition undergoing dental caries assessment · Cross-sectional diagnostic accuracy (index test vs reference standard, in-vivo), Overall (studies reporting PPV; narrative synthesis)
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
PPV 41.8% to 99%10 studiesUngraded
Teledentistry (index test): dental caries diagnosis from photographs taken with DSLR or smartphone cameras; store-and-forward vs Visual/clinical dental examination (reference standard)
Sensitivity · Children and adults with primary or permanent dentition undergoing dental caries assessment · Cross-sectional diagnostic accuracy (index test vs reference standard, in-vivo), Overall (studies reporting sensitivity; narrative synthesis)
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
Sensitivity Overall 48% to 98.3% across 13 studies; sensitivity is lesion-stage dependent: Kohara reported <40% for initial/moderate caries (75-100% for extensive) and early enamel lesions were less sensitive13 studiesUngraded
Teledentistry (index test): dental caries diagnosis from photographs taken with DSLR or smartphone cameras; store-and-forward vs Visual/clinical dental examination (reference standard)
Inter-examiner reliability · Children and adults with primary or permanent dentition undergoing dental caries assessment · Cross-sectional diagnostic accuracy (index test vs reference standard, in-vivo), Overall (studies reporting inter-examiner reliability; narrative synthesis)
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
Inter-examiner reliability (kappa) reported in 13 studies, ranging from 0.44 to 0.91. No pooled estimate.13 studiesUngraded
Teledentistry (index test): dental caries diagnosis from photographs taken with DSLR or smartphone cameras; store-and-forward vs Visual/clinical dental examination (reference standard)
Negative predictive value · Children and adults with primary or permanent dentition undergoing dental caries assessment · Cross-sectional diagnostic accuracy (index test vs reference standard, in-vivo), Overall (studies reporting NPV; narrative synthesis)
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
Negative predictive value reported in 10 of 19 studies; per-study values ranged from about 31% to 99.5% (Table 2). No pooled estimate.10 studiesUngraded
Teledentistry diagnosis using DSLR or smartphone extra-oral photographs vs Visual or clinical examination
Sensitivity for dental caries diagnosis · Children and adults with primary or permanent dentition · Overall
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
Sensitivity Overall 48% to 98.3% across 13 studies; sensitivity is lesion-stage dependent: Kohara reported <40% for initial/moderate caries (75-100% for extensive) and early enamel lesions were less sensitive13 studiesUngraded
Intervention NR
Comparable diagnostic accuracy (photographic vs visual examination) · Overall narrative conclusion across included studies
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
Study conclusion (narrative) 17 of 19 studies concluded photographic diagnostic accuracy comparable to visual caries assessment19 studiesUngraded
Teledentistry diagnosis using DSLR or smartphone extra-oral photographs vs Visual or clinical examination
Specificity for dental caries diagnosis · Children and adults with primary or permanent dentition · Overall
Teledentistry accuracy for caries diagnosis: a systematic review of in-vivo studies using extra-oral… (2024)
no estimate extracted13 studiesUngraded
Visual or visual-tactile classification (e.g., ICDAS, ERK) vs Reference standard (histology, operative excavation, or enhanced visual examination)
Sensitivity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 1: fully within-person comparison (studies evaluating >=3 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity 0.82 [0.73, 0.89]19 studies · 2849 participantsUngraded
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Caries detection accuracy on intraoral images · Dental images of human beings · Kühnisch et al., 2022; convolutional neural networks
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 93.31 study · 2417 participantsUngraded
Intervention NR
Difference in summary sensitivity (NMA, Analysis 2) · Electrical conductance vs Fluorescence
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity difference (95% CrI) 0.06 [-0.09, 0.18]NRUngraded
Intervention NR
Difference in summary specificity (NMA, Analysis 2) · Fluorescence vs Transillumination
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity difference (95% CrI) 0.01 [-0.10, 0.15]NRUngraded
Intervention NR
Difference in summary sensitivity (NMA, Analysis 2) · Fluorescence vs Transillumination
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity difference (95% CrI) -0.01 [-0.12, 0.13]NRUngraded
Transillumination and OCT vs Reference standard (histology, operative excavation, or enhanced visual examination)
Specificity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 2: network meta-analysis (all studies evaluating >=2 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity 0.82 [0.68, 0.91]64 studies · 24567 participantsLow
Fluorescence-based devices vs Reference standard (histology, operative excavation, or enhanced visual examination)
Specificity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 1: fully within-person comparison (studies evaluating >=3 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity 0.88 [0.78, 0.94]19 studies · 2849 participantsUngraded
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Caries detection accuracy in unrestored molars and premolars · Dental images of human beings · Duong et al., 2021; support vector machine
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 92.371 study · 620 participantsUngraded
Visual or visual-tactile classification (e.g., ICDAS, ERK) vs Reference standard (histology, operative excavation, or enhanced visual examination)
Specificity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 2: network meta-analysis (all studies evaluating >=2 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity 0.81 [0.73, 0.87]64 studies · 24567 participantsLow
Intervention NR
Difference in summary sensitivity (NMA, Analysis 2) · Imaging vs Transillumination
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity difference (95% CrI) -0.27 [-0.40, -0.12]NRUngraded
Intervention NR
Difference in summary specificity (NMA, Analysis 2) · Electrical conductance vs Imaging
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity difference (95% CrI) -0.16 [-0.45, 0.02]NRUngraded
Intervention NR
Difference in summary sensitivity (NMA, Analysis 2) · Imaging vs Visual
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity difference (95% CrI) -0.34 [-0.42, -0.23]NRUngraded
Fluorescence-based devices vs Reference standard (histology, operative excavation, or enhanced visual examination)
Sensitivity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 2: network meta-analysis (all studies evaluating >=2 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity 0.76 [0.68, 0.82]64 studies · 24567 participantsLow
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Proximal caries detection accuracy · Dental images of human beings · Casalegno et al., 2018; CNN
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 85.61 study · 217 participantsUngraded
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Occlusal caries detection accuracy · Dental images of human beings · Moutselos et al., 2019; MASK R-CNN; worst class
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 66.71 study · 88 participantsUngraded
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Dental caries detection accuracy · Dental images of human beings · Mayank et al., 2017; F-CNN
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 701 study · 3000 participantsUngraded
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Premolar caries detection accuracy · Dental images of human beings · Lee et al., 2018; CNN
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 881 study · 3000 participantsUngraded
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Proximal caries detection accuracy · Dental images of human beings · Devito et al., 2008; hidden-layer perceptron with backpropagation
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 88.41 study · 160 participantsUngraded
Visual or visual-tactile classification (e.g., ICDAS, ERK) vs Reference standard (histology, operative excavation, or enhanced visual examination)
Sensitivity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 2: network meta-analysis (all studies evaluating >=2 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity 0.83 [0.77, 0.87]64 studies · 24567 participantsLow
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Dental caries detection accuracy · Dental images of human beings · Zanella-Calzada et al., 2018; ANN
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 691 study · 189 participantsUngraded
Intervention NR
Difference in summary sensitivity (NMA, Analysis 2) · Fluorescence vs Imaging
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity difference (95% CrI) 0.26 [0.15, 0.37]NRUngraded
Machine-learning algorithms for dental caries detection vs Different machine-learning algorithms for caries prediction
Molar and premolar caries detection accuracy · Dental images of human beings · Lee et al., 2018; CNN
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 821 study · 3000 participantsUngraded
Electrical conductance or impedance vs Reference standard (histology, operative excavation, or enhanced visual examination)
Sensitivity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 2: network meta-analysis (all studies evaluating >=2 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity 0.83 [0.66, 0.92]64 studies · 24567 participantsLow
Intervention NR
Difference in summary sensitivity (NMA, Analysis 2) · Electrical conductance vs Visual
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity difference (95% CrI) 0.00 [-0.17, 0.11]NRUngraded
Machine-learning algorithms (deep learning: CNN/FCNN, ANN, backpropagation neural network, SVM, ADA-NN, Mask R-CNN) applied as an index test to detect dental caries vs Different machine-learning algorithms compared with one another / against the reference caries diagnosis
Diagnostic accuracy for root caries detection · Dental radiographic/intraoral images of human teeth (X-ray and photographic) · Root caries
Uses of Different Machine Learning Algorithms for Diagnosis of Dental Caries. (2022)
Accuracy 97.11 studyUngraded
Intervention NR
Difference in summary specificity (NMA, Analysis 2) · Electrical conductance vs Fluorescence
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity difference (95% CrI) -0.11 [-0.40, 0.07]NRUngraded
Fluorescence-based devices vs Reference standard (histology, operative excavation, or enhanced visual examination)
Sensitivity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 1: fully within-person comparison (studies evaluating >=3 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity 0.71 [0.59, 0.81]19 studies · 2849 participantsUngraded
Intervention NR
Difference in summary specificity (NMA, Analysis 2) · Imaging vs Transillumination
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity difference (95% CrI) 0.07 [-0.03, 0.20]NRUngraded
Imaging (analog or digital radiographs) vs Reference standard (histology, operative excavation, or enhanced visual examination)
Specificity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 2: network meta-analysis (all studies evaluating >=2 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity 0.89 [0.83, 0.93]64 studies · 24567 participantsLow
Imaging (analog or digital radiographs) vs Reference standard (histology, operative excavation, or enhanced visual examination)
Sensitivity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 1: fully within-person comparison (studies evaluating >=3 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity 0.48 [0.35, 0.62]19 studies · 2849 participantsUngraded
Intervention NR
Difference in summary specificity (NMA, Analysis 2) · Electrical conductance vs Transillumination
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity difference (95% CrI) -0.09 [-0.38, 0.12]NRUngraded
Transillumination and OCT vs Reference standard (histology, operative excavation, or enhanced visual examination)
Sensitivity for detecting enamel caries · Asymptomatic children or adults suspected of enamel caries (clinical studies); extracted teeth (in vitro studies) · Analysis 2: network meta-analysis (all studies evaluating >=2 index tests)
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Sensitivity 0.76 [0.63, 0.86]64 studies · 24567 participantsLow
Intervention NR
Difference in summary specificity (NMA, Analysis 2) · Fluorescence vs Imaging
Enamel Caries Detection and Diagnosis: An Analysis of Systematic Reviews. (2022)
Specificity difference (95% CrI) -0.05 [-0.14, 0.02]NRUngraded