Oral Tissue Tolerance of a Mouthrinse

You may not qualify if:

• Physical limitations or restrictions that might preclude use of normal oral hygiene procedures (i.e., toothbrushing, etc.).
• History of significant adverse effects following use of oral hygiene products such as toothpastes and mouthrinses.
• History or current evidence of significant oral soft tissue pathology, excluding gingivitis, based on the dentist's visual examination and at the discretion of the investigator.
• Prior participation in any oral hygiene or product clinical study within the previous 30 days.
• Therapy with any medications, currently or within the last 30 days, which might interfere with the outcome of the study by affecting tooth color or stain formation (i.e., certain antimicrobial mouthrinses and antibiotics, such as chlorhexidine).
• Restorations on 10% or more of the facial surfaces of the maxillary anterior incisor teeth.
• Dental fluorosis, hypoplasia, restorations, tetracycline stains, or other enamel surface irregularities that may interfere with evaluation of the selected teeth.
• Visual evidence of Moderate/advanced periodontitis (ADA Type III, IV). Orthodontic bands, appliances, bridges, numerous crowns, removable orthodontic appliances or partial dentures.
• Self-reported pregnancy or lactation (this criterion is due to oral tissue changes related to pregnancy and nursing which can affect interpretation of study results).
• Regular use of whitening products within 1 week prior to Screening/Baseline. Other severe, acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with trial participation or investigational product administration or may interfere with the interpretation of trial result and, in the judgment of the investigator, would make the subject inappropriate for the entry into this trial.