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Evidence found and GRADE certainty

3 questions · 5 findings · 1 reviews · Orthodontics

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No studies found 0 · 0%GRADE not reported 1 · 20%Very low 0 · 0%Low 4 · 80%Moderate 0 · 0%High 0 · 0%

Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances

Lactobacilli presence (CFU > 10^5) · Adults undergoing orthodontic treatment

Aligners probably lower the risk of high lactobacilli counts versus fixed appliances in adults at 3 months (RR 0.09, 95% CI 0.02 to 0.47; low certainty).

2 findings from 1 review

Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances

S. mutans presence (CFU > 10^5) · Adults undergoing orthodontic treatment

Aligners probably lower the risk of high S. mutans counts versus fixed appliances in adults at 3 months (RR 0.07, 95% CI 0.01 to 0.49; low certainty).

2 findings from 1 review

Clear aligners (Invisalign / thermoformed aligners) vs Fixed appliances

S. mutans presence · Adolescents/teenagers undergoing orthodontic treatment

A single study found no significant difference in S. mutans presence between aligners and fixed appliances in adolescents at 1 month (RR 0.86, 95% CI 0.64 to 1.14; ungraded).

1 finding from 1 review