Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

49 questions · 66 findings · 13 reviews

No studies found 0 · 0%GRADE not reported 59 · 89.4%Very low 1 · 1.5%Low 5 · 7.6%Moderate 1 · 1.5%High 0 · 0%

Metal-free single crowns (full-contour zirconia) vs Composite strip crown

Treatment failure (annual failure rate) · Children (aged 3-5.5 years) with early childhood caries in anterior primary teeth (>=2 carious surfaces), no pulp therapy

Zirconia crowns failed less than composite strip crowns (3.3% vs 15% annual failure) in one RCT; low quality of evidence (ungraded).

1 finding from 1 review

Antimicrobial photodynamic therapy (PDT) vs No photodynamic therapy (untreated negative control)

Microbial reduction (viable count, log CFU/mL) · Patients with dental caries (in vivo cariogenic microorganisms, including children with early childhood caries)

In randomized clinical trials, photodynamic therapy significantly reduced cariogenic microbial counts versus untreated control (SMD -1.16, 95% CI -2.02 to -0.30; 2 trials), but heterogeneity was high (I2=70%) and considered too high to rely on; certainty was not graded.

1 finding from 1 review

Mutans streptococci present in oral samples at baseline vs Mutans streptococci absent in oral samples at baseline

Development of any (cavitated or non-cavitated) carious lesion · Children younger than 6 years with caries-free primary dentition (no cavitated or non-cavitated lesions at baseline)

Preschool children with mutans streptococci at baseline probably have about four times higher odds of developing early childhood caries (OR 4.13; moderate certainty).

10 findings from 1 review
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Mutans streptococci present in oral samples at baseline vs Mutans streptococci absent in oral samples at baseline

Future caries experience (dmft/dmfs) · Children younger than 6 years with caries-free primary dentition (no cavitated or non-cavitated lesions at baseline)

Children with mutans streptococci at baseline had a greater future caries experience (SMD 0.85, a large effect; ungraded).

1 finding from 1 review

Mutans streptococci detected in plaque or saliva at baseline vs No mutans streptococci detected in plaque or saliva at baseline

Development of any (cavitated or non-cavitated) carious lesion · Children younger than 6 years with caries-free primary dentition (no cavitated or non-cavitated lesions at baseline)

Across the sample-based sensitivity analysis, mutans streptococci at baseline were associated with higher odds of developing caries.

1 finding from 1 review