Visit 2 Visit 2 will occur within 4 weeks of Visit 1. Subjects entered into the study will be randomly assigned to three groups: Group 1 (Smart Mouth ACF), Group 2 (0.12% chlorhexidine) or Group 3 (placebo). Each group will have at least 25 subjects. All subjects will be given a complete dental prophylaxis to remove plaque, calculus, and stain. Written and verbal oral hygiene instructions will be given that include a regular regimen of brushing twice daily and flossing daily. All subjects will be assigned a commercially available ADA accepted toothbrush and dental floss. They will be given a 3 week supply of the assigned mouthrinse with written and verbal instructions for use. Subjects will be instructed not to have their teeth professionally cleaned prior to study completion.