Findings

What do systematic reviews say?

2 questions · 2 findings · 1 reviews · All outcomes

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

Probiotics vs placebo or control

Gingival index (GI) · Children and/or adolescents (<18 years) without background systemic disease

Probiotics probably make little to no difference to the gingival index versus control (MD 0.04, 95%CI -0.18 to 0.27; low certainty).

1 finding from 1 review

Efficacy of Probiotic Consumption on Oral Outcomes in Children and/or Adolescents: A Meta-Analysis. 2024 All outcomes
follow-up: mean 3.07 months · Healthy children and/or adolescents (<18 years) without systemic disease; RCTs from multiple countries (India, Thailand, Spain, Australia, New Zealand, Sweden, Poland, Colombia, Saudi Arabia); mostly school/community and clinic settings · Overall (all presentations pooled)
MD 0.04 [-0.18, 0.27]
3 studies · 144 participants
Low

Probiotics vs placebo or control

Gingival bleeding (various bleeding indices) · Children and/or adolescents (<18 years) without background systemic disease

Only one trial (Borrell 2021) reported the bleeding index, showing slightly more bleeding with probiotics (MD 0.10, 95%CI 0.02 to 0.18); not pooled or GRADE-rated.

1 finding from 1 review

Efficacy of Probiotic Consumption on Oral Outcomes in Children and/or Adolescents: A Meta-Analysis. 2024 All outcomes
1.5 months · Healthy children and/or adolescents (<18 years) without systemic disease; RCTs from multiple countries (India, Thailand, Spain, Australia, New Zealand, Sweden, Poland, Colombia, Saudi Arabia); mostly school/community and clinic settings · Single study (Borrell 2021); not pooled
MD 0.10 [0.02, 0.18]
1 study · 27 participants
GRADE not reported