The objective of the study is to evaluate the safety and efficacy of the home-use device Silk'n toothbrush (ToothWave) for the improvement in dental health through the reduction of plaque, gingivitis, and calculus.



Eligible Ages
Between 18 Years and 70 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

  1. Adult subjects aged 18-70, that are in good health.
  2. Subject must have:
  3. 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).
  4. 4. Total Calculus deposits greater than 9 according to the Volpe-Manhold Index.
  5. Have a minimum of 20 'scorable' teeth (excluding 3rd molars).
  6. 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.
  7. 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.

Study Design

Study Type
Intervention Model
Parallel Assignment
Intervention Model Description
Single blind prospective study
Primary Purpose
Single (Outcomes Assessor)
Masking Description
The Outcomes Assessors will not be exposed to the type of brush the subject is using or to the group they are assigned to (treatment or control).

Arm Groups

ArmDescriptionAssigned Intervention
Treatment group
The treatment is conducted with the ToothWave toothbrush Intervention: brushing with Radio frequency (RF)-utilizing powered toothbrush
  • Device: RF-utilizing powered toothbrush
    RF-utilizing Powered toothbrush
    Other names:
    • RF toothbrush
Sham Comparator
Control group
Regular powered toothbrush Intervention: brushing with a regular powered toothbrush with no RF
  • Device: Control placebo with no RF
    Placebo control, toothbrush with no RF

Recruiting Locations

University of Texas Health Science Center at San Antonio
San Antonio, Texas 78229-3900
Bennett T Amaechi, BDS, MS, PhD

More Details

Home Skinovations Ltd.

Study Contact

Liora Levi, PhD

Detailed Description

This is a single blind, prospective study aimed to evaluate the safety and efficacy of the Silk'n toothbrush in reduction of gingivitis, dental plaque and calculus.

The study includes a total of 168 treatment sessions, twice a day, and 5 clinic visits over a period of 12 weeks.

One treatment group (Silk'n toothbrush - ToothWave) and 1 control group (an ADA approved power toothbrush (PTB)) will participate in the study.

For each patient, assessment data will be collected at baseline, 4 weeks, and at 6 weeks. Calculus condition will be measured after 12 weeks in addition to the other timepoints. The average data sets will be calculated for each group.

Treatment is defined as a timed 2 minutes of teeth brushing in a regular manner, twice a day (morning and evening). Brushing will be undertaken using the Silk'n toothbrush and standard fluoride toothpaste. The control group will use a regular PTB and standard fluoride toothpaste.


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.