A double-blind , randomized , 6-month clinical trial with parallel group design in 162 patients with gingivitis divided into three rinsing groups was conducted in order to study the efficacy and safety of a flavoured solution of delmopinol hydrochloride 2 mg ml-1 ( 0.2 % w/v , Decapinol Mouthwash ) used for supervised mouthrinsing in one rinsing group , in comparison with chlorhexidine digluconate 2 mg ml-1 ( 0.2 % w/v , Hibitane Dental ) in a second rinsing group , and placebo in the third group .
