What do systematic reviews say?

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

It is very uncertain whether periodontal treatment (scaling and root planing, alone or with… changes perinatal mortality (including fetal and neonatal deaths up to the… compared with alternative (less intensive) periodontal treatment, alone or with… (very low certainty).

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  RR 1.06 [0.60, 1.85]
  2 studies · 855 participants
  Very low

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

Periodontal treatment (scaling and root planing, alone or with… led to lower clinical attachment level compared with alternative (less intensive) periodontal treatment, alone or with…; GRADE not reported.

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  MD -0.13 [-0.23, -0.03]
  1 study · 53 participants
  GRADE not reported

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

It is very uncertain whether periodontal treatment (scaling and root planing, alone or with… changes low birth weight < 2500 g compared with alternative (less intensive) periodontal treatment, alone or with… (very low certainty).

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  RR 1.39 [0.92, 2.09]
  1 study · 756 participants
  Very low

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

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  Not pooled. Pirie 2013 (99 participants): mean difference in birth weight -0.07 kilograms. Macones 2010 (756 participants): difference in mean birth weight -67.7 grams.
  2 studies
  GRADE not reported

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

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).

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes

  SRP + antimicrobial vs alternative mechanical treatment + placebo
  RR 1.40 [0.67, 2.92]
  1 study · 243 participants
  Very low
• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes

  SRP vs alternative mechanical treatment
  RR 0.87 [0.46, 1.67]
  4 studies · 1168 participants
  Very low
• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes

  SRP + antimicrobial vs SRP + placebo
  RR 3.08 [1.15, 8.20]
  1 study · 243 participants
  Very low

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

The review found no eligible studies for this question.

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  Pre-eclampsia: Not reported for this comparison.
  0 studies
  No studies found

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

It is very uncertain whether periodontal treatment (scaling and root planing, alone or with… changes low birth weight < 1500 g compared with alternative (less intensive) periodontal treatment, alone or with… (very low certainty).

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  RR 1.85 [0.69, 4.96]
  1 study · 756 participants
  Very low

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

Periodontal treatment (scaling and root planing, alone or with… led to lower bleeding on probing compared with alternative (less intensive) periodontal treatment, alone or with…; GRADE not reported.

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  MD -28.00 [-38.54, -17.46]
  1 study · 53 participants
  GRADE not reported

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

The review found no eligible studies for this question.

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  Maternal mortality: Not reported for this comparison.
  0 studies
  No studies found

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

Periodontal treatment (scaling and root planing, alone or with… showed no clear difference in gingival index compared with alternative (less intensive) periodontal treatment, alone or with…; GRADE not reported.

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  MD -28.00 [-144.13, 88.13]
  1 study · 53 participants
  GRADE not reported

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

The review found no eligible studies for this question.

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  Adverse effects of therapy: Not reported for this comparison.
  0 studies
  No studies found

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

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  Preterm births < 35 weeks reported in four studies across three subcomparisons; none of the subcomparisons showed a difference; SRP versus alternative mechanical treatment not pooled due to considerable heterogeneity;…
  4 studies
  Very low

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

Periodontal treatment (scaling and root planing, alone or with… led to lower probing depth compared with alternative (less intensive) periodontal treatment, alone or with…; GRADE not reported.

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  MD -0.93 [-1.12, -0.74]
  1 study · 53 participants
  GRADE not reported

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

The review found no eligible studies for this question.

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  Small for gestational age: Not reported for this comparison.
  0 studies
  No studies found

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

It is very uncertain whether periodontal treatment (scaling and root planing, polishing, or… changes perinatal mortality (including fetal and neonatal deaths up to the… compared with no treatment (very low certainty).

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  RR 0.85 [0.51, 1.43]
  7 studies · 5320 participants
  Very low

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

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).

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  RR 0.87 [0.70, 1.10]
  11 studies · 5671 participants
  Low

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

It is very uncertain whether periodontal treatment (scaling and root planing, polishing, or… changes preterm birth < 35 weeks compared with no treatment (very low certainty).

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  RR 1.19 [0.81, 1.76]
  2 studies · 2557 participants
  Very low

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

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  Six studies (2573 participants) reported mean gestational age in weeks; data not pooled due to skewness; mean difference ranged between -0.1 and 1.4 weeks. Two studies reported gestational age as time-to-event data…
  6 studies · 2573 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

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  0% in both groups; Not estimated; 2389 participants (4 RCTs)
  4 studies · 2389 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

It is very uncertain whether periodontal treatment (scaling and root planing, polishing, or… changes preterm birth < 32 weeks compared with no treatment (very low certainty).

• Treating periodontal disease for preventing adverse birth outcomes in pregnant women 2017 · Cochrane All outcomes
  RR 1.35 [0.78, 2.32]
  3 studies · 2755 participants
  Very low