Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

234 questions · 320 findings · 14 reviews · All outcomes

No studies found 82 · 25.6%GRADE not reported 176 · 55%Very low 54 · 16.9%Low 5 · 1.6%Moderate 3 · 0.9%High 0 · 0%

Cranberry extract / juice and proanthocyanidin (flavonoid) fractions vs Untreated or vehicle control (some studies vs positive antimicrobial controls, e.g. chlorhexidine/fluoride)

Cell death / cytotoxicity induction · Streptococcus mutans (in vitro cultures and biofilms)

One study reported time-dependent cell-death induction (50% at 10 h) with cranberry extract (ungraded).

1 finding from 1 review

Cranberry extract or cranberry flavonoid fractions vs No extract or vehicle control; other antimicrobial agents

Biofilm morphology or biomass · Streptococcus mutans (in vitro cultures and biofilms)

No meta-analysis was conducted; four included studies reported disrupted biofilm structure or reduced biomass with cranberry extract or fractions.

1 finding from 1 review

Grape seed extract or grape seed flavonoid fractions vs No extract or vehicle control; other antimicrobial agents

Bacterial adhesion · Streptococcus mutans (in vitro cultures and biofilms)

No meta-analysis was conducted; two included studies reported reduced Streptococcus mutans adhesion with grape seed extract or fractions.

1 finding from 1 review

Cranberry extract or cranberry flavonoid fractions vs No extract or vehicle control; other antimicrobial agents

Antioxidant capacity · Streptococcus mutans (in vitro cultures and biofilms)

No meta-analysis was conducted; one included study reported antioxidant properties of cranberry fractions.

1 finding from 1 review

Azithromycin + SRP vs SRP

Probing pocket depth · Adults with periodontitis (chronic and aggressive)

Azithromycin + SRP led to lower probing pocket depth compared with SRP; GRADE not reported.

3 findings from 1 review

Doxycycline + SRP vs Metronidazole + SRP

Clinical attachment level (CAL) · Adults with aggressive periodontitis

Doxycycline + SRP showed no clear difference in clinical attachment level (CAL) compared with metronidazole + SRP; GRADE not reported.

3 findings from 1 review

Metronidazole + SRP vs SRP

Probing pocket depth · Adults with periodontitis (chronic and aggressive)

It is very uncertain whether metronidazole + SRP changes probing pocket depth compared with SRP (very low certainty).

3 findings from 1 review

Doxycycline + SRP vs SRP

Clinical attachment level (CAL) · Adults with aggressive periodontitis

It is very uncertain whether doxycycline + SRP changes clinical attachment level (CAL) compared with SRP (very low certainty).

3 findings from 1 review

Azithromycin + SRP vs SRP

Percentage of closed pockets · Adults with periodontitis (chronic and aggressive)

Azithromycin + SRP showed no clear difference in percentage of closed pockets compared with SRP; GRADE not reported.

2 findings from 1 review

Doxycycline + SRP vs SRP

Probing pocket depth · Adults with aggressive periodontitis

Doxycycline + SRP showed no clear difference in probing pocket depth compared with SRP; GRADE not reported.

3 findings from 1 review

Amoxicillin + metronidazole + SRP vs SRP

Probing pocket depth · Adults with periodontitis (chronic and aggressive)

Amoxicillin + metronidazole + SRP led to lower probing pocket depth compared with SRP; GRADE not reported.

3 findings from 1 review

Azithromycin + SRP vs SRP

Percentage of bleeding on probing (BOP) · Adults with periodontitis (chronic and aggressive)

Azithromycin + SRP led to lower percentage of bleeding on probing (BOP) compared with SRP; GRADE not reported.

3 findings from 1 review

Doxycycline + SRP vs Metronidazole + SRP

Probing pocket depth · Adults with aggressive periodontitis

Doxycycline + SRP showed no clear difference in probing pocket depth compared with metronidazole + SRP; GRADE not reported.

3 findings from 1 review

Clindamycin + SRP vs Metronidazole + SRP

Probing pocket depth · Adults with aggressive periodontitis

Clindamycin + SRP showed no clear difference in probing pocket depth compared with metronidazole + SRP; GRADE not reported.

3 findings from 1 review

Amoxicillin + clavulanate + SRP vs SRP

Percentage of bleeding on probing (BOP) · Adults with chronic periodontitis

It is very uncertain whether amoxicillin + clavulanate + SRP changes percentage of bleeding on probing (BOP) compared with SRP (very low certainty).

3 findings from 1 review

Amoxicillin + metronidazole + SRP vs Clarithromycin + SRP

Clinical attachment level (CAL) · Adults with aggressive periodontitis

Amoxicillin + metronidazole + SRP showed no clear difference in clinical attachment level (CAL) compared with clarithromycin + SRP; GRADE not reported.

2 findings from 1 review

Amoxicillin + clavulanate + SRP vs SRP

Probing pocket depth · Adults with chronic periodontitis

Amoxicillin + clavulanate + SRP showed no clear difference in probing pocket depth compared with SRP; GRADE not reported.

3 findings from 1 review