Efficacy of Resveratrol Containing Mouthwash in Reducing Halitosis Related Porphyrymonas Gingivalis.

Inclusion Criteria: * Organoleptic tongue of scores \> 2 using (0-5scale) (Rosenberg and McCulloch, 1992) * Male and female undergraduate dental students without chemical plaque control measures for at least one weak * Male and female students with halitosis due to gingivitis * The age of students ranges from 20 to 23 years. * No periodontal treatment for at least one month * No systemic disease * No tobacco smoking * The patients must have at least 20 teeth Exclusion Criteria: * Smokers and alcoholics * Patient with periodontitis or pocket depth \> 6mm * Patient with orthodontics appliance * Open carious lesions, pericoronitis, dry socket, and fistula. * Patients with systemic disease and condition * taking medication in the last two weeks * Take garlic, onion, or licorice in the last 24 hours * using oral hygiene products in the last 24 hours * pregnant women * sinusitis, tonsilitis, and upper respiratory tract infection