Efficacy and clinical indications of adjunctive chlorhexidine mouthrinses in nonsurgical and surgical periodontal therapy: A systematic review and meta-analysis.

Chlorhexidine mouthrinses as an adjunct to periodontal treatment produced small reductions in pocket depth and bleeding on probing during nonsurgical therapy, but showed no meaningful benefit for attachment loss; in surgical therapy, benefits were limited to early postoperative inflammation control.

A plain-English summary of the study's own findings — we don't add our own claims or interpretation. Read the full paper for the complete methods and results, and apply your own clinical judgement.