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Evidence found and GRADE certainty

7 questions · 9 findings · 4 reviews

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No studies found 0 · 0%GRADE not reported 1 · 11.1%Very low 3 · 33.3%Low 1 · 11.1%Moderate 4 · 44.4%High 0 · 0%

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

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

Group antenatal care vs individual antenatal care (adjusted data)

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

Group antenatal care showed no clear difference in preterm birth (gestational age at time of birth less than 37 weeks'… compared with individual antenatal care (adjusted data) (moderate certainty).

1 finding from 1 review

Intervention not reported

Preterm birth < 37 weeks Gestational age based on the date of last menstrual period · Pregnant women with HIV infection

The intervention showed no clear difference in preterm birth < 37 weeks Gestational age based on the date of last… (moderate certainty).

1 finding from 1 review

Intervention not reported

Preterm birth < 37 weeks Gestational age was based on date of last menstrual period and was obtained at baseline · Pregnant women with HIV infection

The intervention showed no clear difference in preterm birth < 37 weeks Gestational age was based on date of last… (moderate certainty).

1 finding from 1 review