Defense Date


Document Type


Degree Name

Master of Science



First Advisor

Dr. Eser Tüfecki


The bactericidal efficacy of Listerine®, the essential oil-containing mouthrinse, has long been recognized. The purpose of this study was to determine whether Listerine® mouthrinse, when added to the standard oral hygiene regimen, had an added benefit in reducing plaque and gingivitis development in orthodontic patients over a six-month period. 50 orthodontic patients from the Virginia Commonwealth University Department of Orthodontics were assigned either to the brushing + flossing (N= 25) or brushing + flossing + Listerine® (N = 25) group. At baseline (TI), measurements for the Ramfjord teeth were recorded for the gingival index, plaque index and bleeding index. Subsequent measurements were taken at 3 and 6 months (T2 and T3, respectively). The response profiles for the BI, MGI, and PI over time were significantly different (p<.001) between the two groups. Patients who had Listerine&174; mouthrinse added to their daily oral hygiene regimen exhibited significantly lower BI, MGI, and PI scores at 3 months and 6 months than the patients who only brushed and flossed.


© The Author

Is Part Of

VCU University Archives

Is Part Of

VCU Theses and Dissertations

Date of Submission

June 2008