Clinical Investigation of Oral Malodor for Max Fresh Toothpaste Containing Zinc Citrate Versus a Commercially Available Regular Fluoride Toothpaste

• Max Fresh Toothpaste (Drug): 0.5% zinc citrate
• Colgate Cavity Protection Toothpaste (Drug): sodium fluoride

Primary outcomes

• Organoleptic Oral Malodor Evaluations [baseline, 3 weeks]: Baseline evaluations will be conducted in the morning. On the morning of the evaluation, subjects must refrain for at least six (6) hours from all oral hygiene (brushing, rinsing, and flossing) and from eating and drinking prior to the scheduled visit. At baseline, the mean of the scores from the four judges will constitute each subject's baseline oral malodor score. Subjects with a baseline mean score ≥ 6.0 and ≤ 8.4 will be enrolled

Sex: All, ages: 18 Years to 70 Years, accepts healthy volunteers

Inclusion Criteria:

* Adults aged 18-70 years, inclusive.
* Availability for the full three-week duration of the study.
* Good general health.
* Initial mean oral malodor (organoleptic) score ≥ 6.0 and ≤ 8.4.
* Signed informed consent form.

Exclusion Criteria:

* Presence of orthodontic bands.
* Tumors of the soft or hard tissues of the oral cavity.
* Advanced periodontal disease (e.g., purulent exudate, tooth mobility, and/or extensive loss of periodontal attachment or alveolar bone).
* Five (5) or more carious lesions requiring immediate restorative treatment.
* Use of antibiotics within one (1) month prior to study entry.
* Participation in any other clinical study or test panel within one (1) month prior to study entry.
* Dental prophylaxis within two (2) weeks prior to the initial examination.
* History of allergies to oral care/personal care products or their ingredients.
* Use of prescription medications that might interfere with study outcomes.
* Medical condition that prevents fasting (no food or drink) for up to four (4) hours.
* History of drug and/or alcohol abuse.
* Pregnant or lactating (self-reported).