Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

179 questions · 209 findings · 31 reviews

No studies found 35 · 16.7%GRADE not reported 68 · 32.5%Very low 67 · 32.1%Low 18 · 8.6%Moderate 16 · 7.7%High 5 · 2.4%

Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in conjunction with mechanical oral hygiene procedures vs Placebo/control mouthrinse, or no mouthrinse (mechanical oral hygiene alone); controls pooled (protocol's separate comparisons versus mechanical oral hygiene alone and versus placebo/control merged)

Other adverse effects (taste disturbance, oral mucosal effects, burning sensation) · Children or adults with gingivitis or periodontitis capable of performing normal mechanical oral hygiene procedures (some with medical…
1 finding from 1 review

Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in conjunction with mechanical oral hygiene procedures vs Placebo/control mouthrinse, or no mouthrinse (mechanical oral hygiene alone); controls pooled (protocol's separate comparisons versus mechanical oral hygiene alone and versus placebo/control merged)

Extrinsic tooth staining (various staining indices) · Children or adults with gingivitis or periodontitis capable of performing normal mechanical oral hygiene procedures (some with medical…

Chlorhexidine mouthrinse (any concentration; 0.05% to 0.2%) used in… led to higher extrinsic tooth staining (various staining indices) compared with placebo/control mouthrinse, or no mouthrinse (mechanical oral…; GRADE not reported.

2 findings from 1 review

Chlorhexidine dressing following alcohol cleansing vs polyurethane dressing following aqueous povidone‐iodine cleansing

Sepsis without a source · newborn infants with central venous catheters

Chlorhexidine dressing following alcohol cleansing showed no clear difference in sepsis without a source compared with polyurethane dressing following aqueous povidone‐iodine cleansing (moderate certainty).

1 finding from 1 review

Chlorhexidine dressing following alcohol cleansing vs polyurethane dressing following aqueous povidone‐iodine cleansing

Catheter‐related blood stream infection · newborn infants with central venous catheters

Chlorhexidine dressing following alcohol cleansing showed no clear difference in catheter‐related blood stream infection compared with polyurethane dressing following aqueous povidone‐iodine cleansing (moderate certainty).

1 finding from 1 review

Chlorhexidine dressing following alcohol cleansing vs polyurethane dressing following aqueous povidone‐iodine cleansing

Catheter colonisation · newborn infants with central venous catheters

Chlorhexidine dressing following alcohol cleansing probably leads to lower catheter colonisation compared with polyurethane dressing following aqueous povidone‐iodine cleansing (moderate certainty).

1 finding from 1 review

Chlorhexidine dressing following alcohol cleansing vs polyurethane dressing following aqueous povidone‐iodine cleansing

Adverse effects: contact dermatitis · newborn infants with central venous catheters

Chlorhexidine dressing following alcohol cleansing probably leads to higher adverse effects: contact dermatitis compared with polyurethane dressing following aqueous povidone‐iodine cleansing (moderate certainty).

1 finding from 1 review

Four per cent chlorhexidine + hand hygiene promotion vs usual care

Authors reported adverse outcomes (events without hospitalisation) · Neonates and caregivers

It is very uncertain whether four per cent chlorhexidine + hand hygiene promotion changes authors reported adverse outcomes (events without hospitalisation) compared with usual care (very low certainty).

1 finding from 1 review

Chlorhexidine solution enclosed in implant inner part vs Normal saline

Plaque · Adults with dental implants and healthy peri-implant soft tissues at baseline

Chlorhexidine solution enclosed in implant inner part showed no clear difference in plaque compared with physiologic (saline) solution; GRADE not reported.

1 finding from 1 review

Sodium hypochlorite 1% with chlorhexidine 2% final rinse vs Sodium hypochlorite 1% with normal saline final rinse

Proportion of participants with new or worsening signs/symptoms of inflammation requiring a revisit, up to 14 days after the procedure · Patients aged 14 to 78 years with mature permanent teeth (fully formed roots), single or multi-rooted, with pulpal or periapical…

The review found no eligible studies for this question.

1 finding from 1 review

Sodium hypochlorite 1% with chlorhexidine 2% final rinse vs Sodium hypochlorite 1% with normal saline final rinse

Change in periapical radiolucency (radiography or CBCT), up to 1 year after treatment · Patients aged 14 to 78 years with mature permanent teeth (fully formed roots), single or multi-rooted, with pulpal or periapical…

The review found no eligible studies for this question.

1 finding from 1 review

Sodium hypochlorite 1% with chlorhexidine 2% final rinse vs Sodium hypochlorite 1% with normal saline final rinse

Proportion of participants with moderate to severe pain 72 hours to 14 days after the procedure · Patients aged 14 to 78 years with mature permanent teeth (fully formed roots), single or multi-rooted, with pulpal or periapical…

The review found no eligible studies for this question.

1 finding from 1 review

Sodium hypochlorite 1% with chlorhexidine 2% final rinse vs Sodium hypochlorite 1% with normal saline final rinse

Proportion of participants with moderate to severe pain up to 6 hours after the procedure · Patients aged 14 to 78 years with mature permanent teeth (fully formed roots), single or multi-rooted, with pulpal or periapical…

The review found no eligible studies for this question.

1 finding from 1 review

Sodium hypochlorite 1% with chlorhexidine 2% final rinse vs Sodium hypochlorite 1% with normal saline final rinse

Proportion of participants or samples with positive bacterial growth culture, up to 72 hours after the procedure · Patients aged 14 to 78 years with mature permanent teeth (fully formed roots), single or multi-rooted, with pulpal or periapical…

Sodium hypochlorite 1% with chlorhexidine 2% final rinse led to lower proportion of participants or samples with positive bacterial growth… compared with sodium hypochlorite 1% with normal saline final rinse; GRADE not reported.

1 finding from 1 review

Sodium hypochlorite 1% with chlorhexidine 2% final rinse vs Sodium hypochlorite 1% with normal saline final rinse

Mean change in health-related quality of life or participant-expressed satisfaction with the procedure · Patients aged 14 to 78 years with mature permanent teeth (fully formed roots), single or multi-rooted, with pulpal or periapical…

The review found no eligible studies for this question.

1 finding from 1 review

Chlorhexidine mouthwash vs Placebo mouthwash

Probing pocket depth (PPD/PD) · Orthodontic patients (any age) undergoing orthodontic treatment (mostly fixed appliances)

Chlorhexidine mouthwash may reduce pocket probing depth versus placebo in the short term (low certainty).

1 finding from 1 review

Chlorhexidine mouthwash vs Blank control

Plaque · Orthodontic patients (any age) undergoing orthodontic treatment (mostly fixed appliances)

Chlorhexidine mouthwash may reduce the Plaque Index versus blank control in the short term (WMD -0.70, 95% CI -1.12 to -0.27), but the evidence is very uncertain (very low certainty).

1 finding from 1 review