The extended counseling group will receive one to three, 45-minute individual motivational counseling sessions using a motivational interviewing approach to Express empathy, Develop discrepancy, Roll with resistance, and Support self-efficacy.

The tooth whitening group will receive all of the interventions previously described for the Motivational Counseling Group, and as an extra incentive against relapse, will also be offered complimentary tooth whitening procedures if biochemically verified as tobacco-free by Carbon Monoxide monitor (bleaching at 3-weeks, whitening strips at 3-months, and whitening touch-up at 1 year).

1. A dental check-up will ensure the absence of contraindications to tooth whitening (cavities, soft tissue pathology, severe periodontitis) 2. Removal of calculus, plaque, or stains with a dental polishing 3. Treatment time is approximately 1 hour total4. Lips are retracted, tongue protector is placed and protective eyewear used 5. Saliva is suctioned and teeth are air dried 6. A liquid rubber dam material is applied to protect gums and cured by visible light. 7. The bleaching material is placed on the enamel surface of the involved teeth and is replaced if drying occurs 8. After 15 minutes, the bleach is suctioned, mouth rinsed and process repeated 9. Three to four applications are typically used

1-year abstinence from tobacco use, biochemically verified by carbon monoxide breath test