Safety and Efficacy of the ToothWave -12 Weeks Calculus Study

Inclusion Criteria 1. Adult subjects aged 18-70, that are in good health. 2. Subject must have: 2.1. Baseline gingivitis (MGI) score of at least 1.80. 2.2. Baseline gingival bleeding (GBI) of ≥1 on at least 20 sites. 2.3. Dental Plaque mean score greater than 0.6 according to the RMNPI (Rustogi Modified Navy Plaque Index). 2.4. Total Calculus deposits greater than 9 according to the Volpe-Manhold Index. 3. Have a minimum of 20 'scorable' teeth (excluding 3rd molars). 4. The subjects should understand the information provided about the investigative nature of the treatment, possible benefits and side effects. Subjects will sign the Informed Consent Form. 5. The subjects should be willing to comply with the study procedure and schedule, including the follow up visits. Exclusion Criteria 1. Current or history of oral cavity cancer or oropharyngeal cancer. 2. Pacemaker or internal defibrillator, or any other active electrical implant anywhere in the body. 3. Pregnant or nursing by subject report. 4. Any active condition in the oral cavity at the discretion of the investigator. 5. Any surgery in the oral cavity within 3 months prior to treatment, or before complete healing. 6. Subjects that do not brush regularly. 7. Any condition that might make it unsafe for the subject to participate in this study, at the discretion of the investigator.