Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

2,066 questions · 3,346 findings · 178 reviews · Dental caries

No studies found 48 · 1.4%GRADE not reported 2,789 · 83.4%Very low 208 · 6.2%Low 129 · 3.9%Moderate 136 · 4.1%High 36 · 1.1%

Moderate-severe active dental caries (exposure) vs Caries-free or mild dental caries (control)

Salivary IL-6 level (pg/mL) · Children and young adults (3-25 years)

Salivary IL-6 levels are significantly higher in children and young adults with active dental caries than in caries-free or mild-caries controls (SMD 11.60 pg/mL, 95% CI 6.27 to 16.94; 11 studies); ungraded.

1 finding from 1 review

Er:YAG laser irradiation of sound enamel before acid challenge vs No anticaries intervention (untreated enamel)

Demineralised lesion depth · Human tooth enamel specimens, sound/intact (in vitro)

Er:YAG laser irradiation significantly reduced demineralised lesion depth versus untreated control (SMD -0.55, 95% CI -0.97 to -0.12; 3 in vitro studies, I2=62%; ungraded).

1 finding from 1 review

Breastfeeding <12 months vs Breastfeeding for ≥12 months

Early childhood caries (ECC) · Preschool children (<6 years)

Breastfeeding for <12 vs ≥12 months was associated with significantly fewer caries (RR 0.65, 95% CI 0.50-0.86), indicating breastfeeding beyond 12 months increases ECC risk (substantial heterogeneity; ungraded).

2 findings from 1 review

Significant salivary microbial (Lactobacillus) load vs No/low significant microbial load

Dental caries · Primary school children in Ethiopia

A significant salivary microbial (Lactobacillus) load was associated with higher odds of dental caries (OR 3.82, 95% CI 3.439-4.192; ungraded).

1 finding from 1 review

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

Positive predictive values were reported in 10 of the 13 studies that reported sensitivity and specificity; no meta-analysis or GRADE rating was reported.

1 finding from 1 review

Extraction at patient age 11-12 years vs Extraction at patient age 8-10 years

Spontaneous space closure · Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar)

In the mandible, extraction at 11-12 vs 8-10 years showed no significant difference in one analysis (OR 0.82; not GRADE-rated).

2 findings from 1 review

Periodontitis vs Individuals without periodontal disease (by LOA)

Malignant transformation (oral cancer development) · Adults in case-control studies of oral cancer; people assessed for periodontitis

Periodontitis is associated with roughly a threefold higher odds of oral cancer (pooled OR 2.94, 95% CI 2.13-4.07; low certainty of evidence), though heterogeneity is moderate (I2=52.4%).

1 finding from 1 review

Second molar at Nolla developmental stage 6-7 at extraction vs Second molar at later Nolla stages at extraction

Spontaneous space closure · Children and adolescents after extraction of a mandibular permanent first molar (before eruption of the second molar)

One study found mandibular Nolla stage 6-7 associated with better space closure (OR 55.1; single study; not GRADE-rated).

1 finding from 1 review

Fixed orthodontic treatment with fixed (multibracket) appliances (exposure) vs None (single-group prevalence/incidence estimate)

Association between orthodontic treatment duration and ICLs prevalence · Patients (permanent dentition) during or after fixed orthodontic treatment with fixed (multibracket) appliances

ICLs prevalence increased with longer orthodontic treatment duration (meta-regression P=.01; ungraded).

1 finding from 1 review

Probiotics vs placebo or control

Dental caries in children · Adolescents (12-18 years) without background systemic disease

In a subgroup analysis, probiotics reduced the number of caries in adolescents (MD -0.60, 95%CI -0.92 to -0.28; p-interaction=0.02); not GRADE-rated.

1 finding from 1 review

High-frequency sugar consumption (three or more times daily) vs Low sugar intake (fewer than three times daily)

Early childhood caries experience (mean dmft) · Nigerian children with primary dentition (approximately 6 months to 5 years)

In primary dentition, high-frequency sugar consumption was associated with slightly higher, non-significant odds of caries (OR 1.13, 95% CI 0.23 to 5.44), with high heterogeneity (I2=83%; ungraded).

1 finding from 1 review

Male sex vs Female sex

Dental caries susceptibility · Institutionalized orphan children (roughly 3 to 18 years)

Male institutionalized children had a marginally higher caries risk than females (RR 1.02), a non-significant difference (very low certainty).

1 finding from 1 review

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)

About 1.4% of ancient skulls (pooled) had at least one NCCL; crude 17/805 (2.11%) across 6 studies (ungraded, substantial heterogeneity I2=69%).

1 finding from 1 review

C allele vs T allele

Dental caries · Children (<18 years) with vs without dental caries

FokI(rs10735810) C allele was significantly associated with higher caries risk vs T allele (pooled OR 1.33, 95% CI 1.03-1.71); ungraded.

1 finding from 1 review

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)

In the mandible, mean patient age was not significantly associated with space closure odds (OR 0.59 per year; not GRADE-rated).

1 finding from 1 review

CC+CT genotypes vs TT genotype

Dental caries · Children (<18 years) with vs without dental caries

CC+CT genotype at FokI(rs10735810) was associated with ~1.87-fold higher caries risk than TT (dominant model, OR 1.87); ungraded.

1 finding from 1 review

Cesarean section delivery vs Vaginal delivery

Early childhood caries (ECC) · Children with average age >3 years

No significant association between cesarean vs vaginal delivery and ECC among children with average age >3 years (OR 1.24, 95% CI 0.89-1.71).

1 finding from 1 review