Philips AirFlosser Study

4.1 Inclusion Criteria

Subjects accepted into the study must meet the following requirements:

- are 18-70 years;

- are in generally good health;

- have a minimum of 20 natural teeth (excluding 3rd molars);

- have 1 qualifying test site in each posterior quadrant;

- are a regular manual toothbrush user (prior periodic use of powered toothbrushes in
other studies permitted);

- Irregular Flossers defined as using dental floss ≤ 2 days a week;

- be willing and able to comply with study procedures and be available at all times
required for participation;

- have a Gingival Bleeding Index > 1 on at least 20 sites;

- be a non-smoker.

4.2 Exclusion Criteria Subjects will be excluded from the study if they;

- have systemic diseases such as Down's syndrome, or known AIDS/HIV;

- have insulin dependent Diabetes;

- are pregnant or nursing by subject report;

- have a cardiac pacemaker or AICD;

- are undergoing or require extensive dental or orthodontic treatment;

- require antibiotic treatment for dental appointments;

- have used antibiotics within 4 weeks of enrollment;

- are currently using prescription-dose anti-inflammatory medications or anticoagulants
(including aspirin);

- have heavy deposits of calculus, either supragingival and/or subgingival;

- have severe gingivitis or periodontitis;

- have extensive crown or bridge work and/or rampant decay;

- are currently use bleaching trays;

- have any oral or extraoral piercing on lips or in mouth with ornament or accessory;

- have a professional prophylaxis within 4 weeks of study;

- have participated in a prior study ≤ 20 days;

- are employed by an oral healthcare products company or dental research institution.