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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)

5,762 questions in 263 reviews · Dental caries

current versions
No studies 321 · 5.6%Ungraded 4,450 · 77.2%Very low 455 · 7.9%Low 297 · 5.2%Moderate 200 · 3.5%High 39 · 0.7%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Breastfeeding promotion and support (e.g. individually tailored home-based peer counselling on the importance of breastfeeding, with advice and support for healthy breastfeeding) vs Standard care
Caries presence in primary teeth · For interventions, pregnant and lactating women; for outcomes, children up to 6 years of age · Children assessed at 5-6 yrs
Interventions with pregnant women, new mothers and other primary caregivers for preventing early childhood… (2024) · Cochrane
RR 0.96 [0.89, 1.03]2 studies · 1148 participantsLow
High-frequency sugar consumption (three or more times daily) vs Low sugar intake (fewer than three times daily)
Dental caries experience in primary dentition (early childhood caries) · Nigerian children with primary dentition (approximately 6 months to 5 years) · Primary dentition
A systematic review and meta-analysis of the association between sugar intake and dental caries in Nigeria. (2024)
OR 1.13 [0.23, 5.44]2 studiesUngraded
Clearfil Protect Bond antibacterial fluoride-releasing primer vs Transbond XT conventional primer
White spot lesion incidence · Patients undergoing fixed orthodontic treatment · Before and after orthodontic treatment
Can Orthodontic Adhesive Systems Inhibit the Formation and Development of White Spot Lesions During Fixed… (2024)
The incidence of WSLs in the Clearfil (CF) group was 8.03%, while in the Transbond (TB) group, it was 9.24% with no significant difference (p = 0.82).1 study · 35 participantsUngraded
Silver diamine fluoride (SDF) vs Glass ionomer cement (GIC) plus fluoride varnish
Aesthetics · Children and adults (with or without carious lesions)
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
No studies reported data for this outcome in this comparison0 studiesNo studies
Periodontitis vs No periodontitis (periodontal health or gingivitis)
Mean DMFT (decayed, missing, filled teeth) · Adults · Overall
Association between periodontitis and dental caries: a systematic review and meta-analysis. (2024)
WMD 0.87 [-0.03, 1.76]4 studiesUngraded
Pulpotomy (full or partial) vs None (single-arm success proportion)
Overall success (composite of clinical and radiographic success) · Permanent teeth with carious pulp exposure · >=12 months, Normal pulp/reversible pulpitis
Efficacy of pulpotomy for permanent teeth with carious pulp exposure: A systematic review and meta-analysis… (2024)
Proportion 0.920 [0.879, 0.954]NRUngraded
Highest BMI category (overweight/obese) vs Lowest BMI category (normal weight/underweight)
Dental caries / early childhood caries (ECC) · Children (approx. 4-18 years) · Country population: large
Childhood obesity in relation to risk of dental caries: a cumulative and dose-response systematic review and… (2024)
OR 1.56 [1.09, 2.21]9 studiesUngraded
Silver diamine fluoride (SDF) vs Sealants or resin infiltration
Secondary prevention of caries · Children and adults (with or without carious lesions) · 24 months, Primary dentition (coronal)
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
OR 2.76 [0.67, 11.43]1 study · 75 participantsUngraded
Presence of oral Candida albicans vs Absence of oral Candida albicans
Early childhood caries (ECC) · Children aged ≤6 years (early childhood) · Exposure and outcome assessed concurrently (observational); children aged ≤6 years, Study quality (NOS): good
RETRACTED: Investigating the association between Candida albicans and early childhood dental caries: A… (2024)
OR 5.32 [2.89, 9.80]7 studiesUngraded
Maternal smoking during pregnancy vs No maternal smoking during pregnancy
Dental caries in children · Children of mothers assessed for smoking status during pregnancy (early childhood dental caries) · Exposure during pregnancy; caries assessed in early childhood, Dental examination: Visual/tactile examination
Maternal smoking during pregnancy and early childhood dental caries in children: a systematic review and… (2024)
OR 1.48 [1.26, 1.74]4 studiesUngraded
Not applicable (single-group prevalence) vs Not applicable (single-group prevalence)
Early childhood caries experience (mean dmft) · Children younger than 71 months (under 6 years) · GNI <$5000
A systematic review and meta-analysis on early-childhood-caries global data. (2024)
MEAN 4.64 [3.38, 5.91]19 studiesUngraded
Silver diamine fluoride (SDF) plus fluoride varnish vs Sealants plus fluoride varnish (with or without restorations)
Caries arrest · Children and adults (with or without carious lesions) · 24 months, Mixed dentition (coronal)
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
MD 0.11 [-0.01, 0.22]1 study · 413 participantsLow
Opal Seal fluoride-releasing primer vs Conventional Transbond XT primer
DIAGNOdent white spot lesion measurement · Patients undergoing fixed orthodontic treatment · During orthodontic treatment
Can Orthodontic Adhesive Systems Inhibit the Formation and Development of White Spot Lesions During Fixed… (2024)
Opal Seal group showed fewer WSLs compared to the Transbond group, with initial demineralization rates of 1.3% and 3.9%, and caries lesion rates of 0.2% and 1.3%, respectively (p <0.03).1 study · 56 participantsUngraded
Slum residence vs Non-slum urban residence
Periodontal pocket (odds), slum vs non-slum residence · Adult residents of slums and non-slum urban settings of LMICs · Cross-sectional, Slum vs non-slum urban (Osuh 2022, Nigeria)
Systematic review of oral health in slums and non-slum urban settings of Low and Middle-Income Countries… (2024)
OR 1.50 [1.13, 1.98]1 study · 1357 participantsUngraded
Periodontitis vs No periodontitis (periodontal health or gingivitis)
Dental caries (prevalence) · Adults · Standard periodontitis definition
Association between periodontitis and dental caries: a systematic review and meta-analysis. (2024)
OR 1.62 [1.20, 2.18]8 studiesUngraded
Male sex vs Female sex
Dental caries risk · Institutionalized orphan children · Overall (pooled)
Caries in orphan children: prevalence and determinants-a systematic review and meta-analysis. (2024)
RR 1.02 [0.96, 1.08]5 studies · 2750 participantsVery low
Grape seed extract or grape seed flavonoid fractions vs No extract or vehicle control; other antimicrobial agents
Biofilm morphology · Streptococcus mutans cultures and biofilms
Effect of flavonoids from grape seed and cranberry extracts on the microbiological activity of Streptococcus… (2024)
no estimate extracted2 studiesUngraded
Silver diamine fluoride (SDF) vs Restoration (restorative treatment)
Aesthetics · Children and adults (with or without carious lesions) · 6 to 12 months, Children
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
Cleary 2022 reported no significant differences (P > 0.05) in parental acceptability, satisfaction, and preference between treatments at 6 and 12 months; at 12 months children in the restoration arm felt happier with…1 studyVery low
Grape seed extract (GSE) and its proanthocyanidin fractions vs Untreated or vehicle control (some studies vs positive antimicrobial controls, e.g. chlorhexidine/fluoride)
Bacterial adhesion (inhibition) · Streptococcus mutans (in vitro cultures and biofilms)
Effect of flavonoids from grape seed and cranberry extracts on the microbiological activity of Streptococcus… (2024)
GSE inhibited S. mutans adhesion to hydroxyapatite by 81.5% (polymeric PAC, 0.125 mg/mL) vs 25% for dealcoholized wine (Daglia); adhesion decreased at MIC 0.5 mg/mL (Smullen).2 studiesUngraded
Opal Seal fluoride-releasing primer vs Conventional Transbond XT primer
Photographic white spot lesion severity · Patients undergoing fixed orthodontic treatment · During orthodontic treatment
Can Orthodontic Adhesive Systems Inhibit the Formation and Development of White Spot Lesions During Fixed… (2024)
WSL severity in digital photographs: no significant difference between the two groups (p >0.05).1 study · 56 participantsUngraded
Resin-modified glass-ionomer cement (RM-GIC) for bracket bonding vs Conventional composite resin adhesive (Transbond XT)
New white spot lesion incidence (and first-time bracket bond failure) · Patients undergoing fixed orthodontic (fixed appliance) treatment (adolescents and adults, ages 12 to 35) · During fixed appliance treatment
Can Orthodontic Adhesive Systems Inhibit the Formation and Development of White Spot Lesions During Fixed… (2024)
Benson 2019 (1 multicenter single-blind RCT, 197 patients): no difference in the proportion of patients with new WSLs or first-time bracket failures between RM-GIC and resin adhesive (p>0.05). No meta-analysis performed.1 study · 197 participantsUngraded
Pulpotomy (full or partial) vs None (single-arm success proportion)
Overall success (composite of clinical and radiographic success) · Permanent teeth with carious pulp exposure · 12 months, 12-month follow-up
Efficacy of pulpotomy for permanent teeth with carious pulp exposure: A systematic review and meta-analysis… (2024)
Proportion 0.856NRUngraded
Silver diamine fluoride (SDF) plus fluoride varnish vs Sealants plus fluoride varnish (with or without restorations)
Aesthetics · Children and adults (with or without carious lesions)
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
No studies reported data for this outcome in this comparison0 studiesNo studies
Silver diamine fluoride (SDF) vs Atraumatic restorative treatment (ART) with glass ionomer cement (GIC) or glass ionomer material
Secondary prevention of caries · Children and adults (with or without carious lesions) · Primary and permanent dentition
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
No studies reported this outcome0 studiesNo studies
nCaF2 primer vs Control Transbond primer
Enamel demineralization (DIAGNOdent score) · Patients undergoing fixed orthodontic treatment · 1, 3, and 6 months after bonding
Can Orthodontic Adhesive Systems Inhibit the Formation and Development of White Spot Lesions During Fixed… (2024)
Statistically significant scores in favor of the nCaF2 primer at T1, T3, and T6 (p-value = 0.000).1 study · 31 participantsUngraded
Not applicable (single-group prevalence) vs Not applicable (single-group prevalence)
Proportion of ancient skulls with at least one non-carious cervical lesion (NCCL) · Ancient/prehistoric human skulls (excavated/archaeological skeletal remains) · Overall (all included studies)
Investigation of the presence of Non-carious cervical lesions (NCCLs) in ancient adult skulls: analyzing… (2024)
Proportion 0.014 [0.001, 0.027]6 studies · 805 participantsUngraded
C allele vs T allele
Dental caries · Children (<18 years) with vs without dental caries · Allelic model (C vs T)
Association of vitamin D receptor gene polymorphisms with caries risk in children: a systematic review and… (2024)
OR 1.33 [1.03, 1.71]3 studies · 1329 participantsUngraded
Remineralizing orthodontic adhesives vs Control orthodontic adhesives
Enamel remineralization or anti-demineralization · Human teeth with early enamel lesions surrounding orthodontic brackets · 5 days to 6 months
Remineralization and anti-demineralization effect of orthodontic adhesives on enamel surrounding orthodontic… (2024)
no estimate extracted24 studiesUngraded
Extraction of the permanent first molar vs None (single-group prevalence)
Spontaneous space closure · Children and adolescents (<18 years) after extraction of a permanent first molar before eruption of the permanent… · Until eruption of the permanent second molar (median follow-up 4.0 years), Mandible
Spontaneous space closure after extraction of permanent first molars in children and adolescents: a… (2024)
Prevalence 48.1 [34.5, 62.0]11 studies · 1095 participantsUngraded
Periodontitis vs No periodontitis (periodontal health or gingivitis)
Dental caries (prevalence) · Adults · Age 30-64 years
Association between periodontitis and dental caries: a systematic review and meta-analysis. (2024)
OR 1.67 [1.37, 2.03]3 studiesUngraded
Cesarean section delivery vs Vaginal delivery
Early childhood caries (ECC) · Children aged <6 years · Study quality (NOS): Low
RETRACTED: The association between mode of childbirth delivery and early childhood caries: A comprehensive… (2024)
OR 0.95 [0.39, 2.33]6 studiesUngraded
Cesarean section delivery vs Vaginal delivery
Early childhood caries (ECC) · Children aged <6 years · Confounder adjustment: No
RETRACTED: The association between mode of childbirth delivery and early childhood caries: A comprehensive… (2024)
OR 0.98 [0.66, 1.47]15 studiesUngraded
Higher mean patient age (per 1 year) vs Lower mean patient age (per 1-year decrement)
Spontaneous space closure · Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar) · Until eruption of the permanent second molar (median follow-up 4.0 years), Mandible
Spontaneous space closure after extraction of permanent first molars in children and adolescents: a… (2024)
OR 0.59 [0.20, >100.00]3 studiesUngraded
Silver diamine fluoride (SDF) vs Sealants or resin infiltration
Aesthetics · Children and adults (with or without carious lesions)
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
No studies reported data for this outcome0 studiesNo studies
CC+CT genotypes vs TT genotype
Dental caries · Children (<18 years) with vs without dental caries · Dominant model (CC+CT vs TT)
Association of vitamin D receptor gene polymorphisms with caries risk in children: a systematic review and… (2024)
OR 1.87 [1.15, 3.04]3 studies · 1329 participantsUngraded
Cesarean section delivery vs Vaginal delivery
Early childhood caries (ECC) · Children with average age >3 years · Average age: >3 years
RETRACTED: The association between mode of childbirth delivery and early childhood caries: A comprehensive… (2024)
OR 1.24 [0.89, 1.71]14 studiesUngraded
Used a pea-sized amount of fluoride toothpaste or less vs Used more than a pea-sized amount
Fluorosis (percentage prevalence in permanent teeth) · Children exposed to topical fluoride when under 6 years old; fluorosis assessed in permanent teeth at 6 to 18 years · Fluorosis assessed when most permanent teeth of interest had erupted (6 to 18 years)
Topical fluoride as a cause of dental fluorosis in children (2024) · Cochrane
OR 0.92 [0.66, 1.28]3 studies · 2037 participantsVery low
Intervention NR
Veillonella spp. association with caries (qualitative)
A systematic review of Streptococcus Mutans and Veillonellae species interactions in dental caries… (2024)
Veillonella spp. associated with caries; no quantitative estimate reported1 studyUngraded
Second molar distally inclined at extraction vs Second molar upright at extraction
Spontaneous space closure · Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar) · Until eruption of the permanent second molar (median follow-up 4.0 years), Mandible
Spontaneous space closure after extraction of permanent first molars in children and adolescents: a… (2024)
OR 1.18 [0.43, 3.21]3 studiesUngraded
Serum 25(OH)D < 50 nmol/l vs Serum 25(OH)D ≥ 75 nmol/l
Early childhood caries (ECC) · Preschool children ≤6 years
The Association Between Vitamin D and Early Childhood Caries: A Systematic Review and Meta-Analysis. (2024)
OR 2.00 [1.76, 2.28]6 studies · 4807 participantsUngraded
Slum / urban-disadvantaged setting vs Non-slum urban / general-urban / national population
Dental caries experience (mean DMFT) · Adult residents of slums and non-slum urban settings of LMICs · Cross-sectional
Systematic review of oral health in slums and non-slum urban settings of Low and Middle-Income Countries… (2024)
Mean DMFT (usually reported at population level) ranged from 0.26 to 16.6 across studies; the Missing component was typically highest and the Filled component lowest, reflecting limited access to dental care.12 studiesUngraded
Maternal smoking during pregnancy vs No maternal smoking during pregnancy
Dental caries in children · Children of mothers assessed for smoking status during pregnancy (early childhood dental caries) · Exposure during pregnancy; caries assessed in early childhood, Sample size: <=1000
Maternal smoking during pregnancy and early childhood dental caries in children: a systematic review and… (2024)
OR 1.63 [1.11, 2.40]3 studiesUngraded
Highest BMI category (overweight/obese) vs Lowest BMI category (normal weight/underweight)
Dental caries / early childhood caries (ECC) · Children (approx. 4-18 years) · Age: 7-15 years
Childhood obesity in relation to risk of dental caries: a cumulative and dose-response systematic review and… (2024)
OR 1.25 [0.87, 1.81]7 studiesUngraded
Slum / urban-disadvantaged setting vs Non-slum urban / general-urban / national population
Dental trauma prevalence · Adult residents of slums and non-slum urban settings of LMICs · Cross-sectional, Urban vs rural; slum vs non-slum
Systematic review of oral health in slums and non-slum urban settings of Low and Middle-Income Countries… (2024)
Dental trauma was more prevalent in urban than rural settings and among disadvantaged groups; Osuh 2022 reported 32% (slum) vs 21% (non-slum); Tobin & Ajayi 2017 found 87.5% of trauma cases in urban vs rural areas…NRUngraded
Intervention NR
Dental caries (early childhood caries) · Narrative single study (Lima 2016): no nocturnal BF vs nocturnal BF at 16 months
Association of Breastfeeding and Early Childhood Caries: A Systematic Review and Meta-Analysis. (2024)
OR 0.51 [0.39, 0.65]1 studyUngraded
Silver diamine fluoride (SDF) vs Sealants or resin infiltration
Primary caries prevention · Children and adults (with or without carious lesions) · Permanent dentition (root)
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
No studies reported data in this dentition type0 studiesNo studies
Presence of oral Candida albicans vs Absence of oral Candida albicans
Early childhood caries (ECC) · Children aged ≤6 years (early childhood) · Exposure and outcome assessed concurrently (observational); children aged ≤6 years, Sample collection: saliva
RETRACTED: Investigating the association between Candida albicans and early childhood dental caries: A… (2024)
OR 4.70 [2.44, 9.09]7 studiesUngraded
Silver diamine fluoride (SDF) vs Placebo or no treatment
Caries arrest · Children and adults (with or without carious lesions) · 24 months, Permanent dentition (root)
Topical silver diamine fluoride (SDF) for preventing and managing dental caries in children and adults (2024) · Cochrane
MD 0.24 [0.12, 0.36]1 study · 158 participantsVery low
AA genotype vs AG+GG genotypes
Dental caries · Children (<18 years) with vs without dental caries · Recessive model (AA vs AG+GG)
Association of vitamin D receptor gene polymorphisms with caries risk in children: a systematic review and… (2024)
OR 1.09 [0.70, 1.71]3 studies · 855 participantsUngraded
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