Evaluation of Efficacy of Experimental Gel to Foam Dentifrices in Dental Erosion

Inclusion Criteria: * General and Oral Health: Good general health with (in the opinion of the investigator) no clinically OST and OHT examinations. * Oral Requirements: * An intact maxillary dental arch suitable for the retention of the palatal appliance and an intact mandibular dental arch. Subjects may have fixed bridges replacing missing teeth. * A gum base stimulated whole saliva flow rate ≥ 0.8 g/min and an unstimulated whole saliva flow rate ≥ 0.2 g/min. * Contraception: Women of childbearing potential who are, in the opinion of the investigator, practicing a reliable method of contraception. Exclusion Criteria: * Oral Health: * Current active caries or periodontal disease that may compromise the study or the health of the subjects. * Lesions of the oral cavity that could interfere with the study evaluations, including severe gingivitis, grossly carious lesions, periodontitis and other severe periodontal disease. * Allergy/Intolerance: Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients. * Clinical Study/Experimental Medication: * Participation in another clinical study or receipt of an investigational drug within 30 days of the screening visit * Previous participation in this study * Substance abuse: Recent history (within the last year) of alcohol or other substance abuse. * Pregnancy: Women who are pregnant or who are intending to become pregnant over the duration of the study * Breast-feeding: Women who are breast-feeding