title: A 6-month clinical study assessing the safety and efficacy of two cetylpyridinium chloride mouthrinses.
abstract: OBJECTIVE
  To evaluate the effects of two experimental cetylpyridinium chloride (CPC) mouthrinses containing 0.075% and 0.10% CPC on the development of gingivitis and plaque versus a placebo control over a period of 6 months.
  
  
  METHODS
  This was a randomized, single center, parallel group, double blind, positive and placebo controlled clinical trial. A 0.12% chlorhexidine rinse served as the positive control for validation of the methodology. At the beginning of the trial, 366 subjects were balanced and randomly assigned to treatment groups. Subjects received a dental prophylaxis and began rinsing twice a day with 15 ml of their assigned mouthwash for 30 seconds after brushing their teeth. Subjects were assessed for gingivitis and gingival bleeding by the Löe-Silness Gingival Index method and plaque by the Turesky modification of Quigley Hein Plaque Index at baseline and after 3 and 6 months of product use. Oral soft tissue health was also assessed.
  
  
  RESULTS
  After 3 and 6 months, subjects rinsing with either 0.075% or 0.10% CPC had significantly (P< 0.0001) less gingivitis, gingival bleeding, and plaque, on average, than those on placebo. The 6-month mean reductions in gingivitis, gingival bleeding, and plaque for the 0.075% and 0.10% CPC rinses versus placebo were 23%, 30% and 17%, and 20%, 27% and 19%, respectively. There was no statistically significant difference in efficacy between the two CPC mouthrinses. Reductions at 3 months were similar to those seen at 6 months. Significant benefits were observed with chlorhexidine, thereby validating the study.
  
  
  CONCLUSIONS
  This study clearly demonstrates that CPC mouthrinses formulated to deliver therapeutic benefits when used twice daily can significantly prevent the development of gingivitis, gingival bleeding, and plaque over a 6-month period.
authors.affiliation: Indiana University Emerging Technologies Center, Indianapolis, Indiana 46202, USA. gstookey@iupui.edu
authors.forename: George K
authors.initials: GK
authors.lastname: Stookey
authors.forename: Bradley
authors.initials: B
authors.lastname: Beiswanger
authors.forename: Melissa
authors.initials: M
authors.lastname: Mau
authors.forename: Roger L
authors.initials: RL
authors.lastname: Isaacs
authors.forename: Jon J
authors.initials: JJ
authors.lastname: Witt
authors.forename: Roger
authors.initials: R
authors.lastname: Gibb
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000891:Anti-Infective Agents, Local / Q000008:administration & dosage / Q000627:therapeutic use*; D002594:Cetylpyridinium / Q000008:administration & dosage / Q000627:therapeutic use*; D002710:Chlorhexidine / Q000031:analogs & derivatives / Q000627:therapeutic use; D003773:Dental Plaque / Q000517:prevention & control*; D003774:Dental Plaque Index; D004311:Double-Blind Method; D005260:Female; D005500:Follow-Up Studies; D005884:Gingival Hemorrhage / Q000517:prevention & control; D005891:Gingivitis / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009061:Mouth Mucosa / Q000187:drug effects; D009067:Mouthwashes / Q000627:therapeutic use*; D010512:Periodontal Index; D010919:Placebos; D012449:Safety; D014099:Toothbrushing
chemical_list: D000891:Anti-Infective Agents, Local; D009067:Mouthwashes; D010919:Placebos; D002594:Cetylpyridinium; C010882:chlorhexidine gluconate; D002710:Chlorhexidine