Findings

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Evidence found and GRADE certainty

4,317 questions · 75,239 findings · 5,342 reviews

No studies found 15,213 · 20.2%GRADE not reported 10,323 · 13.7%Very low 17,528 · 23.3%Low 17,951 · 23.9%Moderate 11,190 · 14.9%High 3,034 · 4%

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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

Grape seed extract or grape seed flavonoid fractions vs No extract or vehicle control; other antimicrobial agents

Biofilm morphology · Streptococcus mutans (in vitro cultures and biofilms)

No meta-analysis was conducted; two included studies reported reduced microcolonies or altered bacterial structure with grape seed extract.

1 finding from 1 review

Silver diamine fluoride (SDF) vs Restoration (restorative treatment)

Aesthetics · Children and adults (with or without carious lesions)
1 finding from 1 review

Facemask with rapid maxillary expansion (RME) vs Tongue appliance

ANB · Children and adolescents (aged 16 years or younger) with prominent lower front teeth (Class III malocclusion)

Facemask with rapid maxillary expansion (RME) showed no clear difference in ANB compared with tongue appliance; GRADE not reported.

1 finding from 1 review

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)

Grape seed extract inhibits S. mutans adhesion to hydroxyapatite in vitro (2 studies; ungraded).

1 finding from 1 review

Opal Seal fluoride-releasing primer vs Conventional Transbond XT primer

Photographic white spot lesion score · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

Opal Seal showed no difference in photographic WSL severity, with certainty not graded.

1 finding from 1 review

Facemask with rapid maxillary expansion (RME) vs Modified tandem appliance

ANB · Children and adolescents (aged 16 years or younger) with prominent lower front teeth (Class III malocclusion)

Facemask with rapid maxillary expansion (RME) showed no clear difference in ANB compared with modified tandem appliance; GRADE not reported.

1 finding from 1 review

Resin-modified glass ionomer cement for bonding orthodontic brackets vs Conventional/control orthodontic adhesive (e.g., Transbond XT) or negative control

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)

A single multicenter RCT found resin-modified glass-ionomer cement did not reduce new white spot lesions or bond failures versus conventional composite (ungraded).

1 finding from 1 review

Superelastic NiTi arch wire vs Thermoelastic NiTi arch wire

Root resorption · People receiving orthodontic treatment with fixed appliances (upper and/or lower full arch)

It is very uncertain whether superelastic NiTi arch wire changes root resorption (reduction in root length) compared with thermoelastic NiTi arch wire (very low certainty).

1 finding from 1 review

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)

The review found no eligible studies for this question.

1 finding from 1 review

nCaF2 primer vs Control Transbond primer

Enamel demineralization (DIAGNOdent score) · Orthodontic patients of any age with fixed braces (new DLs assessed at debond)

nCaF2 primer favored lower demineralization scores, but certainty was not graded.

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

Remineralizing orthodontic adhesives vs Conventional/control orthodontic adhesive (e.g., Transbond XT) or negative control

Enamel remineralization / anti-demineralization extent · Human teeth with early enamel lesions surrounding orthodontic brackets

No meta-analysis was conducted; most included in vitro studies reported significant remineralization with remineralizing orthodontic adhesives versus controls.

1 finding from 1 review

Surgically-anchored orthodontic treatment (miniplates) vs no intervention

Perceived need for surgery in adulthood · Children and adolescents (aged 16 years or younger) with prominent lower front teeth (Class III malocclusion)

The review found no eligible studies for this question.

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

Spirulina vs Oxitard (antioxidant)

Maximal mouth opening (interincisal distance) · People of any age with a confirmed diagnosis, by clinical examination and biopsy, of oral submucous fibrosis (OSF)

Spirulina may leads to lower maximal mouth opening (interincisal distance) compared with oxitard (antioxidant) (low certainty).

1 finding from 1 review