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Forest plots according to the analyses. No aging: (A) 2% chlorhexidine (CHX) vs. control; (B) 0.2% CHX vs. control. Aging subgroup analysis: (C) 2% CHX vs. control, 6 mo aging; (D) 0.2% CHX vs. control, 6 mo aging; (E) 2% CHX vs. control, 12 mo aging; (F) 2% CHX vs. control, 12 mo of aging or more. Adhesive system subgroup analysis: (G) 2% CHX vs. control after 6 mo, 12 mo, or more of aging.
