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What do systematic reviews say?

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Evidence found and GRADE certainty

5 questions · 8 findings · 3 reviews · Oral Health · All outcomes

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No studies found 0 · 0%GRADE not reported 4 · 50%Very low 3 · 37.5%Low 1 · 12.5%Moderate 0 · 0%High 0 · 0%

Preterm birth (<37 weeks gestation) vs Full-term birth (37 weeks or more gestation)

Early childhood caries (ECC) · Children aged 6 years or younger (preschool children)

In children aged 3 years or younger, preterm birth was not associated with early childhood caries (OR 0.90, 95% CI 0.59 to 1.37); certainty not graded.

2 findings from 1 review

Dental caries during pregnancy vs Pregnant women without dental caries

Preterm birth stratified by gestational age at birth (moderate-to-late 32 to <37, very 28 to <32, extremely <28 weeks) · pregnant women

The planned subanalysis of preterm birth by gestational age at birth (moderate-to-late, very, extremely preterm) could not be performed because of the small number of cases and lack of stratified data in the original studies.

1 finding from 1 review
  • Dental caries and preterm birth: a systematic review and meta-analysis. 2018 All outcomes
    Pregnant women assessed around delivery in observational studies across multiple countries (Mexico, Malawi, India, France, Jordan, Finland, Tanzania); mostly retrospective cohort and case-control designs · By gestational age at birth
    no estimate extracted
    0 studies
    GRADE not reported

Dental caries during pregnancy vs Pregnant women without dental caries

Gestational age (preterm birth < 37 weeks) · pregnant women

Pregnant women with dental caries did not have a significantly increased risk of preterm birth (pooled OR 1.16, 95% CI 0.90 to 1.49; 5 studies; I2=35%); certainty of evidence not graded.

1 finding from 1 review
  • Dental caries and preterm birth: a systematic review and meta-analysis. 2018 All outcomes
    Pregnant women assessed around delivery in observational studies across multiple countries (Mexico, Malawi, India, France, Jordan, Finland, Tanzania); mostly retrospective cohort and case-control designs
    OR 1.16 [0.90, 1.49]
    5 studies · 4246 participants
    GRADE not reported

Periodontal treatment (scaling and root planing, polishing, or surgery), alone or with oral hygiene counselling, antiseptics, or antimicrobials vs no treatment

Gestational age (preterm birth < 37 weeks) · Pregnant women considered to have periodontal disease (gingivitis or periodontitis) after dental examination

Periodontal treatment (scaling and root planing, polishing, or… showed no clear difference in gestational age (preterm birth < 37 weeks) compared with no treatment (low certainty).

1 finding from 1 review

Periodontal treatment (scaling and root planing, alone or with antimicrobials) vs Alternative (less intensive) periodontal treatment, alone or with placebo

Gestational age (preterm birth < 37 weeks) · Pregnant women considered to have periodontal disease (gingivitis or periodontitis) after dental examination

It is very uncertain whether periodontal treatment (scaling and root planing, alone or with… changes gestational age (preterm birth < 37 weeks) compared with alternative (less intensive) periodontal treatment, alone or with… (very low certainty).

3 findings from 1 review