ClinicalTrials.gg
CompletedNCT04092062Updated Dec 11, 2020

Safety and Efficacy of the ToothWave Powered Toothbrush for Extrinsic Stain Reduction (Texas)

An interventional study of ToothWave and powered toothbrush in Tooth Discoloration, sponsored by Home Skinovations Ltd.. Completed at 1 site in United States. Open to participants aged 18 Years to 70 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-12-11.

Sponsored by Home Skinovations Ltd. · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jan 2020, 6 years 9 months ago, and no results have been posted to the registry.
Phase
Not applicable
Study type
Interventional
Enrollment
91
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

This study is a single blind, prospective study aimed to evaluate the safety and efficacy of the Silk'n ToothWave Powered Toothbrush for stains reduction and improvement of teeth shade.

Read the detailed description

The study includes a total of 84 treatment sessions, twice a day, and 4 clinic visits over a period of 6 weeks.

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

For each patient, efficacy assessment data will be collected at baseline, 4 weeks, and at 6 weeks. The average stain data will be calculated for each group.

Treatment is defined as a timed, 2 minute brushing of the teeth according to the manufacturer's instructions, twice daily (morning and evening). Brushing will be undertaken using the Silk'n toothbrush and standard fluoride toothpaste. The control group will use an ADA accepted PTB and standard fluoride toothpaste.

02

Conditions studied

  • Tooth Discoloration

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03

In context

Tooth Discoloration

105 studies on the registry are indexed under Tooth Discoloration; 19 are open to participants now.

This study's enrollment of 91 is above the median of 48 across 97 interventional studies indexed under Tooth Discoloration.

Browse Tooth Discoloration studies →

Lead sponsor

Home Skinovations Ltd. is the lead sponsor of 11 studies on the registry; none are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Adult subjects aged 18-70, that are in good health.
  2. Subjects should have notable extrinsic dental stains on the 6 maxillary labial front teeth, or on the 6 mandibular front teeth (lingual or labial), with a total extrinsic tooth stain score ≥14 according to the LSI.
  3. Subject must have at least 2 natural anterior teeth, each having a mean Lobene composite score of ≥ 1.5 as assessed by the Investigator.
  4. Subject front teeth shade should be 9 or darker (meaning shade score should be between 9 and 29), as assessed by the Vita bleachedguide 3D-Master or the Vita EasyShade device.
  5. The subjects should understand the information provided about the investigative nature of the treatment, possible benefits and side effects. Subjects will sign the Form.
  6. The subjects should be willing to comply with the study procedure and schedule, including the follow up visits, and will refrain from using any other teeth whitening technologies during this period.
  7. The subject did not perform any procedure for teeth whitening (either at home or in clinic) at least 3 years prior to participating in the study.

Exclusion criteria

Exclusion Criteria

  1. Pacemaker or internal defibrillator, or any other active electrical implant anywhere in the body.
  2. Pregnant or nursing by subject report.
  3. Any active condition in the oral cavity at the discretion of the investigator.
  4. Any surgery in the treated area within 3 months prior to treatment, or before complete healing.
  5. Subjects that do not brush regularly.
  6. Any condition that might make it unsafe for the subject to participate in the study, at the discretion of the investigator.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
91 participants (actual)

Study arms

  • Experimental
    Treatment - ToothWave brush

    Subjects using the Silk'n ToothWave, Radio frequency (RF)-utilizing toothbrush.

    Device: ToothWave

  • Sham comparator
    Control - powered toothbrush

    Subjects using a regular ADA-Accepted Powered Toothbrush, no RF

    Device: powered toothbrush

Interventions

  • DeviceToothWave

    RF-utilizing powered toothbrush for teeth whitening

    Also known as: RF toothbrush

  • Devicepowered toothbrush

    regular powered toothbrush with no RF

06

What researchers measure

Primary outcomes

  1. Extrinsic Stains

    Extrinsic Stains will be evaluated using the validated Lobene Stain Index (LSI) Stain Intensity score range is between 0 and 3, where: 0 = no stain 1. = light stain 2. = moderate stain 3. = heavy stain The mean stain intensity will be calculated for both the gingival and body regions of the incisor teeth for each subject. Stain Area score rage is between 0 and 3, where: 0 = no stain 1. = stain covering up to one third of region 2. = stain covering up to two thirds of region 3. = stain covering more than two thirds of region The mean stain area will be calculated for both the gingival and body regions of the incisor teeth for each subject.

    Time frame: 6 weeks

Secondary outcomes

  1. Tooth color assessment

    VITA Bleachedguide 3D-Master shade guide, includes 29 shade levels defined by the American Dental Association (ADA). These shade levels represents the brightness of the tooth where 1 is the whitest and 29 is the darkest shade.

    Time frame: 6 weeks

07

Study locations

1 site
  • University of Texas Health Science Center at San Antonio
    San Antonio, Texas 78229-3900, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 11, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04092062
Lead sponsor
Home Skinovations Ltd.
Responsible party
Sponsor
First posted
Sep 17, 2019
Start date
Aug 7, 2019
Primary completion
Jan 28, 2020
Completion
Jan 28, 2020
Last update
Dec 11, 2020

Study contacts

Bennett T Amaechi, BDS, MS, PhD
principal investigator · The University of Texas Health Science Center at San Antonio

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2019. You cannot join it, but the record below documents what was studied.

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