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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.
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 |
|---|---|---|---|
Ion-releasing restoration, glass ionomer-based (conventional GIC, HV-GIC, RMGIC, glass hybrid) vs Resin composite restoration Secondary caries (caries around restorations), all cavity types · Patients with permanent dentition in need of restorations (all cavity types: Black's Class I, II, V, and non-carious… · Overall (1 year, 18 months-2 years, and 3 years pooled) Secondary caries and marginal adaptation of ion-releasing versus resin composite restorations: a systematic… (2022) | RD -0.00 [-0.01, 0.00] | 12 studies · 3085 participants | Ungraded |
Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs No intervention or usual practice/activities Oral hygiene measured by plaque scores · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs) · Post-intervention; follow-up varied across studies (interventions ranged from <2 years to >=2 years and longer) Effectiveness of primary school-based interventions in improving oral health of children in low- and… (2022) | SMD -0.32 [-0.46, -0.18] | 7 studies · 3339 participants | Very low |
Genetically predicted gene expression (TWAS; S-PrediXcan with GTEx v8 cis-eQTL across 49 tissues; cross-tissue S-MultiXcan) vs ECC-unaffected children (association of genetically predicted expression) Early childhood caries (ECC) - association with genetically predicted expression of TAS2R43 (chr12p13.2) · Children up to age 5-6 years (European / European non-Hispanic ancestry); 843 ECC-affected vs 2124 unaffected across 5… · Cross-sectional (ECC ascertained at the last dental exam before age 6), TAS2R43 (chr12p13.2); 27 (3) tissues; significant (Bonferroni p < 3.09x10-6) Association of Early Childhood Caries with Bitter Taste Receptors: A Meta-Analysis of Genome-Wide… (2022) | Z-score (cross-tissue mean, S-MultiXcan) 1.80 | 5 studies · 2974 participants | Ungraded |
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] | NR | Ungraded |
Glass ionomer-based sealant vs Resin-based sealant (fluoride-releasing or non-fluoride-releasing) Progression of non-cavitated enamel caries · 'Healthy' children with caries-free second primary molars, aged 3-5 years (schools and kindergartens, India and China) Sealants for preventing dental caries in primary teeth (2022) · Cochrane | No studies reported this outcome. | 0 studies | No studies |
Dental caries (carious oral microbiome) vs Caries-free / healthy oral microbiome Differential microbial abundance / taxa predictive of caries · Individuals providing oral (saliva/supragingival plaque) 16S rRNA microbiome samples; 2016 samples from 19 studies… Meta-analysis of caries microbiome studies can improve upon disease prediction outcomes. (2022) | Mean-decrease-accuracy discriminating taxa: Capnocytophaga HMT-338, Lactobacillus panis, Treponema HMT-230, Bifidobacterium longum, Delftia acidovorans, Staphylococcus schleiferi; higher log2FC in caries: Selenomonas HMT-146, Aggregatibacter actinomycetemcomitans, Actinomyces HMT-896, Treponema HMT-257; Streptococcus not predictive | 19 studies · 2016 participants | Ungraded |
Composite resin vs Compomer Restoration failure · Children with carious primary teeth after vital or non-vital pulp therapy · 2 years Clinical effectiveness of restorative materials for the restoration of carious lesions in pulp treated… (2022) | Annual failure rate (AFR, %) 0 | 1 study · 84 participants | Ungraded |
Fluoride-releasing resin-based sealant vs No sealant (no treatment) Development of >=1 new carious lesion (caries incidence) · Children with caries-free or non-cavitated carious lesion primary molars, aged 3-7 years (paediatric department,… · 12 months Sealants for preventing dental caries in primary teeth (2022) · Cochrane | BB OR 1.21 [0.37, 3.94] | 1 study · 88 participants | Low |
Non-responsive complementary feeding (NRCF) vs Other models of complementary feeding (responsive/traditional CF) Weight gain (restrictive vs coercive styles) · Healthy, term-born, normal-birth-weight infants aged 4-24 months (breastfed and/or formula-fed) in Western… · Infancy to early childhood, Restrictive vs coercive/pressuring styles Complementary Feeding Caregivers' Practices and Growth, Risk of Overweight/Obesity, and Other… (2022) | Restrictive style would favor excess weight (three of five studies); coercive style (pressure to eat) would favor a lower weight (three of five studies); clinical significance never quantified. | NR | Ungraded |
Pulpotomy (partial or full) vs None (single-arm pooled success proportion) Clinical and radiographic success rate (>=6 months) · Human permanent teeth with irreversible pulpitis (symptomatic and asymptomatic) due to carious pulp exposure · >=6 months, Randomized trials (GRADE evidence profile) Outcome of pulpotomy in permanent teeth with irreversible pulpitis: a systematic review and meta-analysis. (2022) | Proportion 0.743 [0.56, 0.86] | 5 studies · 488 participants | Very low |
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] | NR | Ungraded |
Total daily fluoride intake (TDFI) and daily fluoride intake from toothpaste Correlation between daily urinary fluoride excretion (DUFE) and fluoride intake · Children and adults with 24-h urinary fluoride monitoring (9 studies reporting both intake and urine; Table 2) · 24-h urine collection, High-fluoride-area data from Idowu et al. [46,47] excluded Fluoride Intake Through Dental Care Products: A Systematic Review. (2022) | R2 (coefficient of determination) <0.07 | 9 studies | Ungraded |
Not applicable vs Not applicable Prevalence of dental caries · Children aged 12 years (plus or minus one year) in Africa · Overall, urban/rural-status analysis Prevalence of dental caries in the permanent dentition amongst 12-year-olds in Africa: a systematic review… (2022) | Prevalence 0.3657 [0.3065, 0.4250] | NR | Ungraded |
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] | NR | Ungraded |
Genetically predicted gene expression (TWAS; S-PrediXcan with GTEx v8 cis-eQTL across 49 tissues; cross-tissue S-MultiXcan) vs ECC-unaffected children (association of genetically predicted expression) Early childhood caries (ECC) - association with genetically predicted expression of SMIM10L1 (chr12p13.2) · Children up to age 5-6 years (European / European non-Hispanic ancestry); 843 ECC-affected vs 2124 unaffected across 5… · Cross-sectional (ECC ascertained at the last dental exam before age 6), SMIM10L1 (chr12p13.2); 46 (3) tissues; significant (Bonferroni p < 3.09x10-6) Association of Early Childhood Caries with Bitter Taste Receptors: A Meta-Analysis of Genome-Wide… (2022) | Z-score (cross-tissue mean, S-MultiXcan) -0.35 | 5 studies · 2974 participants | Ungraded |
Dental caries (carious oral microbiome) vs Caries-free / healthy oral microbiome Alpha diversity (Chao1, Observed, Shannon) · Adults providing oral (saliva/supragingival plaque) 16S rRNA microbiome samples · Adults Meta-analysis of caries microbiome studies can improve upon disease prediction outcomes. (2022) | In adults, there was no significant caries-vs-health difference in Chao1 or Observed diversity, whereas the Shannon index differed significantly (p < 0.001). | NR | Ungraded |
Maternal education attainment vs Children without dental caries Dental caries (association with no formal maternal education) · Children (deciduous and/or permanent dentition) in low- and middle-income countries · No formal education Individual, Family, and Socioeconomic Contributors to Dental Caries in Children from Low- and Middle-Income… (2022) | OR 1.34 [0.76, 2.36] | 3 studies · 3666 participants | Ungraded |
Amalgam vs Composite resin Restoration failure · Children with carious primary teeth · 2 years, Class II Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022) | Annual failure rate (%) amalgam 17.5%; composite resin 6.2% | 1 study · 43 participants | Ungraded |
Composite resin with etch-and-rinse (total-etch) adhesion vs Composite resin with self-etch adhesion (same universal adhesive) Treatment failure (annual failure rate) · Children with moderately deep dentine caries in primary molars, no pulp therapy · 18 months (Lenzi 2017), Adhesive strategy (etch-and-rinse vs self-etch) Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022) | Annual failure rate (%) etch-and-rinse 19.5%; self-etch 7.0% | 1 study · 44 participants | Ungraded |
Caries assessment at enamel threshold vs None Enamel caries proportion · European adolescents aged 12 years · Exact age Dental caries at enamel and dentine level among European adolescents - a systematic review and meta-analysis. (2022) | Proportion 0.52 [0.36, 0.75] | 6 studies | Ungraded |
Amalgam restoration vs Composite resin, compomer, conventional glass-ionomer cement, or resin-modified GIC (head-to-head RCT comparators) Treatment failure (annual failure rate) · Children with previously unrestored, vital carious lesions in primary teeth (no pulp therapy); aged 1.5-11 years · 12-60 months follow-up (4 trials; 1-5 years) Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022) | Annual failure rate (%) 1-28% | 4 studies | Ungraded |
Composite strip crown (CSC) with a post (microhybrid composite resin, Amelogen) vs Post type: composite post (CP) vs fibre post (FP) vs reverse metal post (RMP) Treatment failure (annual failure rate) · Children with severely decayed maxillary primary incisors treated by pulpectomy (non-vital pulp therapy) · 1 year, Composite post (CP) arm Clinical effectiveness of restorative materials for the restoration of carious lesions in pulp treated… (2022) | AFR 2.3 | 1 study · 54 participants | Ungraded |
Living with HIV and undergoing antiretroviral therapy (ART/HAART) vs Healthy HIV-negative controls Dental development / dental age (mineralization chronology) · Children and adolescents (<18 years) · Cross-sectional (case-control; single time point) Oral Health Status of Children and Adolescents Living with HIV Undergoing Antiretroviral Therapy: A… (2022) | Three studies (Fernandes 2007, de Souza 2015, Holderbaum 2005) assessed dental age (Nolla/Willems methods); Fernandes and de Souza found no significant difference between groups; Holderbaum reported mixed sex-specific… | 3 studies | Ungraded |
Resin-modified GIC vs Composite resin Restoration failure · Children with carious primary teeth · 2 years, Class II Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022) | Annual failure rate (%) RMGIC 8.4%; composite resin 8.4% | 1 study · 55 participants | Ungraded |
Caries experience measurement (mean D(M)FS, enamel lesions included) vs None (descriptive prevalence review; subgroup analyses only) Caries experience (mean DMFS) · European adolescents aged 12–19 years · Age group: 16–19 years Dental caries at enamel and dentine level among European adolescents - a systematic review and meta-analysis. (2022) | MEAN 7.61 [3.78, 15.30] | 4 studies | Ungraded |
Ion-releasing glass ionomer cement (GIC) restorations vs Resin composite restorations Unacceptable marginal adaptation · Patients with permanent dentition in need of restorations · 1 year, 18 months to 2 years, and 3 years, All types of cavities Secondary caries and marginal adaptation of ion-releasing versus resin composite restorations: a systematic… (2022) | RD 0.01 [-0.01, 0.03] | 9 studies · 2725 participants | Ungraded |
Caries assessment at dentine threshold (cavitation into dentine) vs None (descriptive prevalence review; subgroup analyses only) Caries prevalence · European adolescents aged 12–19 years Dental caries at enamel and dentine level among European adolescents - a systematic review and meta-analysis. (2022) | Prevalence 0.56 [0.43, 0.68] | 15 studies | Ungraded |
Glass ionomer-based sealant vs No sealant Development of >=1 new carious lesion (caries incidence) · Children with caries-free primary first molars (with or without caries on other teeth), aged 1-5 years (paediatric… · 6-12 months Sealants for preventing dental caries in primary teeth (2022) · Cochrane | OR 0.033 [0.007, 0.149] | 1 study · 107 participants | Low |
Dental caries assessment (WHO/clinical diagnostic criteria; caries = DMFT>0) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year) Caries prevalence · 12-year-old children (permanent dentition) in Africa · Data collection period: 2000-2004 Prevalence of dental caries in the permanent dentition amongst 12-year-olds in Africa: a systematic review… (2022) | Prevalence 0.282 [0.227, 0.337] | 13 studies | Ungraded |
Pulpotomy (partial or full) vs None (single-arm pooled success proportion) Clinical and radiographic success rate (>=6 months) · Human permanent teeth with asymptomatic irreversible pulpitis due to carious pulp exposure · >=6 months, Asymptomatic irreversible pulpitis Outcome of pulpotomy in permanent teeth with irreversible pulpitis: a systematic review and meta-analysis. (2022) | Proportion 0.913 [0.80, 0.965] | 3 studies | Ungraded |
Caries assessment at enamel threshold (D(M)FS>0 or D(M)FT>0, enamel lesions included) vs None (descriptive prevalence review; subgroup analyses only) Caries prevalence · European adolescents aged 12–19 years · Region: non-Scandinavian Dental caries at enamel and dentine level among European adolescents - a systematic review and meta-analysis. (2022) | Prevalence 0.74 [0.53, 0.96] | 11 studies | Ungraded |
Pulpotomy with Biodentine vs Pulpotomy with Calcium Enriched Mixture (CEM) Clinical and radiographic success rate (>=6 months) · Human permanent teeth with irreversible pulpitis due to carious pulp exposure · >=6 months, Pulp capping material: Biodentine vs CEM Outcome of pulpotomy in permanent teeth with irreversible pulpitis: a systematic review and meta-analysis. (2022) | Biodentine demonstrated a statistically significantly higher success rate than CEM (indirect comparison; Supplementary Table S5, not available). | NR | Ungraded |
Pulpotomy with mineral trioxide aggregate (MTA) vs Pulpotomy with Calcium Enriched Mixture (CEM) Clinical and radiographic success rate (>=6 months) · Human permanent teeth with irreversible pulpitis due to carious pulp exposure · >=6 months, Pulp capping material: MTA vs CEM Outcome of pulpotomy in permanent teeth with irreversible pulpitis: a systematic review and meta-analysis. (2022) | MTA was not significantly superior to CEM (no significant difference; Supplementary Table S5, not available). | NR | Ungraded |
Caries assessment at enamel threshold vs None Caries prevalence · European adolescents aged 12 years · Exact age Dental caries at enamel and dentine level among European adolescents - a systematic review and meta-analysis. (2022) | Prevalence 0.69 [0.49, 0.90] | 13 studies | Ungraded |
Caries assessment at dentine threshold (cavitation into dentine) vs None (descriptive prevalence review; subgroup analyses only) Caries prevalence · European adolescents aged 12–19 years · Region: Scandinavian Dental caries at enamel and dentine level among European adolescents - a systematic review and meta-analysis. (2022) | Prevalence 0.49 [0.32, 0.67] | 9 studies | Ungraded |
Cleft lip and/or palate (CL/P) vs No cleft lip and/or palate (non-CL/P) Caries experience in the primary dentition (dmft/dmfs/dfs/deft/ds; pooled as standardized mean difference) · Children in the primary dentition with non-syndromic cleft lip and/or palate (CL/P) and comparable children without CL/P · Primary and mixed dentition Caries in children with and without orofacial clefting: A systematic review and meta-analysis. (2022) | SMD 0.09 [-0.59, 0.76] | 5 studies · 708 participants | Ungraded |
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 participants | Low |
CD4+ T-cell count below 250 cells/mm3 HIV-related oral lesions · Children living with HIV receiving ART · CD4+ T-cell count below 250 cells/mm3 Oral Health Status of Children and Adolescents Living with HIV Undergoing Antiretroviral Therapy: A… (2022) | OR 1.916 [0.613, 2.513] | 1 study | Ungraded |
Prior application of silver diamine fluoride (SDF), with or without a rinsing step vs No prior SDF application (untreated dentin control) Immediate bond strength (MPa) · Dental adhesives/resin composite bonded to dentin (in vitro), sound or caries-affected · Immediate bond strength, Overall (all dentin conditions and rinsing protocols) Bonding of Glass-Ionomer Cement and Adhesives to Silver Diamine Fluoride-treated Dentin: An Updated… (2022) | MD 7.12 [1.38, 12.85] | 11 studies · 526 participants | Ungraded |
Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs No intervention or usual practice/activities Oral hygiene measured by mean gingival scores · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs) · Post-intervention; follow-up varied across studies (interventions ranged from <2 years to >=2 years and longer) Effectiveness of primary school-based interventions in improving oral health of children in low- and… (2022) | SMD 0.12 [-0.32, 0.55] | 3 studies · 1573 participants | Very low |
Caries severity measurement (mean number of decayed, missing and filled permanent teeth, DMFT; WHO criteria) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year) Caries severity (mean DMFT) · 12-year-old children (permanent dentition) in Africa · Country: Libya Prevalence of dental caries in the permanent dentition amongst 12-year-olds in Africa: a systematic review… (2022) | MEAN 2.11 [1.178, 3.038] | 2 studies | Ungraded |
Primary school-based interventions (one or more of: school health policy, oral health education, healthy school environment, access to oral health services, community involvement) vs No intervention or usual practice/activities Dental caries measured by DMFT scores · Primary school children (aged 3-16 years) attending primary school in low- and middle-income countries (LMICs) · Post-intervention; follow-up varied across studies (interventions ranged from <2 years to >=2 years and longer), Age 6-8 years Effectiveness of primary school-based interventions in improving oral health of children in low- and… (2022) | SMD -0.11 [-0.17, -0.04] | NR | Ungraded |
Caries severity measurement (mean number of decayed, missing and filled permanent teeth, DMFT; WHO criteria) vs None (descriptive prevalence review; subgroup analyses by urban/rural status, country and year) Caries severity (mean DMFT) · 12-year-old children (permanent dentition) in Africa · Setting: Urban Prevalence of dental caries in the permanent dentition amongst 12-year-olds in Africa: a systematic review… (2022) | MEAN 1.325 [0.974, 1.675] | 10 studies | Ungraded |
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 participants | Ungraded |
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 92.37 | 1 study · 620 participants | Ungraded |
Prefabricated zirconia crowns (e.g., NuSmile, Zirkiz, Kinder Krown) vs Other crowns/restorations (stainless steel crowns, pre-veneered SSC, resin composite strip crowns, glass-fiber composite crowns) Recurrent caries (crowns free of recurrent caries) · Children with primary (deciduous) teeth requiring full-coverage crown restoration · 6 months Zirconia Crowns for Primary Teeth: A Systematic Review and Meta-Analyses. (2022) | RR 1.00 [0.97, 1.03] | 2 studies · 205 participants | Ungraded |
Fluoride-containing dental care products (mainly fluoride toothpaste) vs Dietary fluoride sources (drinking water, beverages, food) Contribution of dental care products to total daily fluoride intake (TDFI), by tap-water fluoride level · Adults using fluoride-containing dental care products (two included studies [28,47]; aged 20-35) · Habitual daily intake, Poor-fluoridated tap water (<0.3 mg/L) Fluoride Intake Through Dental Care Products: A Systematic Review. (2022) | Mean contribution to TDFI (%) 12 | 1 study | Ungraded |
Antiretroviral therapy (any, including cART) vs No antiretroviral medication (treatment-naive) Acute necrotising ulcerative gingivitis prevalence · Children and adolescents (<18 years) living with HIV (CLWH) Impact of Antiretroviral Therapy on Oral Health among Children Living with HIV: A Systematic Review and… (2022) | OR 0.00 [0.00, 0.02] | NR | Very low |
Amalgam vs Resin-modified GIC Restoration failure · Children with carious primary teeth · 1 year, Class II Clinical effectiveness of restorative materials for the restoration of carious primary teeth without pulp… (2022) | Annual failure rate (%) amalgam 28.0%; RMGIC 16.9% | 1 study · 120 participants | Ungraded |
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 participants | Low |