- Oral condition: a.Has history of oral surgery (including extractions) within four weeks, operative dental work within seven days, or a presence of any clinically significant oral pathology (as determined by the Investigator) including lesions, sores or inflammation which would interfere with assessments. b.Has fixed retainers, orthodontic appliances, or either maxillary and/or mandibular dentures or other appliances which may interfere with the placement or wearing of the product. c.Has current or recurrent disease that could affect the site of application, the action, absorption or disposition of the study treatment, or clinical assessment. d.Has severe gingivitis, periodontitis or rampant caries, as diagnosed by the investigator. e.Has the presence of oral or peri-oral ulceration including herpetic lesions at the time of baseline (subjects with these lesions may be re-examined at a subsequent appointment and may be able to be admitted at a later date if the ulceration or herpetic lesion heals). f.Has elective dentistry scheduled during the study duration.