A Six Month Clinical Study Based in the US to Evaluate the Efficacy and Tolerability of Sodium Bicarbonate Toothpaste

Inclusion Criteria:

- Good general health with (in the opinion of the investigator) no clinically
significant and relevant abnormalities of medical history or oral/dental examination.

- A minimum of 20 permanent gradable teeth

- Moderate gingivitis present at the screening visit in the opinion of the investigator

- A total of 20 bleeding sites or greater at baseline visit

- Positive response to bleeding on brushing present at the screening visit

Exclusion Criteria:

- Pregnant or breast feeding women

- Tobacco chewers

- Current or relevant history of any serious, severe or unstable physical or
psychiatric illness or any other medical condition (e.g. Diabetes Mellitus) that
would make the participant unlikely to fully complete the study or any that increases
the risk to the participants or undermines the data validity.

- Recent history (within the last year) of alcohol or other substance abuse

- Participants requiring prophylactic antibiotic treatment prior to dental therapy

- Known or suspected intolerance or hypersensitivity to the study materials (or closely
related compounds) or any of their stated ingredients

- Have current active caries or any medical conditions which may directly influence
gingival bleeding

- Use of concomitant or any systemic medication that, in the opinion of the
investigator, might interfere with the outcome of the study or have an effect on
gingival conditions within 14 days of gingival examinations

- Excessive calculus present that interferes with the probing examination for Gingival
Bleeding Index

- Participation in another clinical study or receipt of an investigational drug or oral
care product within 30 days of the screening visit

- An employee of the sponsor or the study site or members or their immediate family.