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GingivitisPhase 4NCT03219840

Cetylpyridium Chloride (CPC) Based Chewing Gum and Gingivitis

A Phase 4 study testing Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum and Xylitol only chewing gum in people with Gingivitis and Plaque, Dental, run by The University of Texas Health Science Center, Houston at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This placebo-controlled, double-blinded, randomized crossover study evaluates the plaque and gingivitis reducing capacity of Cetylpyridium Chloride (CPC) chewing gum, with mechanical oral hygiene. The study will enroll 73 students, faculty, and staff from the UTHealth School of Dentistry. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Gingivitis, Plaque, Dental, Periodontal Diseases
What is being tested?
Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum and Xylitol only chewing gum
Could I receive a placebo?
No, everyone receives an active treatment
How many people
70 participants
Where
1 siteUnited States
Study dates
18 Oct 2017to 8 Sep 2018
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Be aged 18 and older
  • Be capable of giving informed consent themselves and are able and willing to participate in the study
  • Patients willing to forgo any optional dental procedures during the study period, such as dental prophylaxis or teeth whitening
  • Patients that regularly brush their teeth twice a day

Who cannot join

  • Pregnant or breastfeeding women
  • Patients taking long-term anti-microbial or anti-inflammatory drugs
  • Patients unable or unwilling to provide informed consent
  • Self-reported use of tobacco products
  • Gross oral pathology, including widespread caries or chronic neglect, extensive restoration, pre-existing gross plaque or calculus, or soft or hard tissue tumor of the oral cavity
  • Less than 26 teeth in the mouth
Show all 9Show fewer
  • Orthodontic appliances or removable partial dentures that will compromise the ability of the potential subject to participate in the study
  • Periodontitis as indicated periodontal pockets greater than 5 millimeters on more than one site
  • Inability to comply with assigned treatment regimen

Trial locations and contacts

1 site in 1 country.

United States1 site
  • The University of Texas Health Science Center at Houston

    Houston, Texas, 77054

Other trials in United States

About this study

Official title: Effects of Cetylpyridium Chloride (CPC) Based Chewing Gum Plus Tooth Brushing on Plaque Formation and Gingivitis: a Randomized, Double-Blind, Crossover, Placebo-controlled Clinical Trial

This placebo-controlled, double-blinded, randomized crossover study evaluates the plaque and gingivitis reducing capacity of Cetylpyridium Chloride (CPC) chewing gum, with mechanical oral hygiene. The study will enroll 73 students, faculty, and staff from the UTHealth School of Dentistry. Half of the eligible participants will be randomly assigned to get the CPC gum in the first treatment period (21 days), a wash-out period of 21 days, and then a placebo gum in the second treatment period (21 days). The other half will be assigned to follow the same schedule but with the treatment reversed. A statistician will perform the randomization. Primary outcomes are assessed by validated tools, such as the Plaque Index (PI), Gingival Index (GI), and percent of bleeding sites on probe (BOP).

Being tested
Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum, Xylitol only chewing gum
Keywords
Cetylpyridium Chloride (CPC), Chewing Gum
Medical subject headings
Gingivitis, Dental Plaque, Periodontal Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gumDrug

    All subjects will be instructed to chew four times a day, for at least 60 seconds, after which they expectorated.

  • Xylitol only chewing gumDrug

    All subjects will be instructed to chew four times a day, for at least 60 seconds, after which they expectorated.

Study groups in NCT03219840
Study groupRoleWhat they receive
CPC + Xylitol chewing gum, then Xylitol only chewing gumExperimentalCetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum and then Xylitol only chewing gum All subjects will be instructed to chew four times a day, for at least 60 seconds, after which they expectorated. Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum will be used for the first 21 days, then there will be a washout period of 21 days, and finally Xylitol only chewing gum will be used for the last 21 days.
Receives: Drug: Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum; Drug: Xylitol only chewing gum
Xylitol only chewing gum, then CPC + Xylitol chewing gumExperimentalXylitol only chewing gum and then Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum All subjects will be instructed to chew four times a day, for at least 60 seconds, after which they expectorated. Xylitol only chewing gum will be used for the first 21 days, then there will be a washout period of 21 days, and finally Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum will be used for the last 21 days.
Receives: Drug: Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum; Drug: Xylitol only chewing gum

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Degree of Plaque as Assessed by the Turesky Modification of the Quigley-Hein Plaque Index

    Plaque will be assessed using the Turesky Modification of the Quigley-Hein Plaque Index, where a score of 0 to 5 will be assigned to each facial and lingual non-restored surface of all teeth that are present with the exception of third molars at baseline and week 3 of the study, as follows. For each participant, an average of the scores for all teeth is calculated.

    0 No plaque

    1. Separate flecks of plaque at the cervical margin of the tooth
    2. A thin continuous band of plaque (up to one mm) at the cervical margin of the tooth
    3. A band of plaque wider than one mm but covering less than one-third of the crown of the tooth
    4. Plaque covering at least one-third but less than two-thirds of the crown of the tooth
    5. Plaque covering two-thirds or more of the crown of the tooth

    Measured: day 1

  2. Degree of Plaque as Assessed by the Turesky Modification of the Quigley-Hein Plaque Index

    Plaque will be assessed using the Turesky Modification of the Quigley-Hein Plaque Index, where a score of 0 to 5 will be assigned to each facial and lingual non-restored surface of all teeth that are present with the exception of third molars at baseline and week 3 of the study, as follows. For each participant, an average of the scores for all teeth is calculated.

    0 No plaque

    1. Separate flecks of plaque at the cervical margin of the tooth
    2. A thin continuous band of plaque (up to one mm) at the cervical margin of the tooth
    3. A band of plaque wider than one mm but covering less than one-third of the crown of the tooth
    4. Plaque covering at least one-third but less than two-thirds of the crown of the tooth
    5. Plaque covering two-thirds or more of the crown of the tooth

    Measured: day 22

  3. Degree of Gingivitis as Assessed by the Gingival Index (GI)

    Gingivitis will be assessed using the Gingival Index (GI), where a score of 0 to 3 will be assigned to six teeth, representing six segments of jaws, at baseline and week 3 of the study according to the following criteria. For each participant, an average of the scores for all 6 teeth is calculated.

    0 Absence of inflammation.

    1. Mild inflammation - slight change in color and little change in texture.
    2. Moderate inflammation - moderate glazing, redness, edema, and hypertrophy. Bleeding on pressure.
    3. Severe inflammation - marked redness and hypertrophy. Tendency to spontaneous bleeding. Ulceration.

    Measured: day 1

  4. Degree of Gingivitis as Assessed by the Gingival Index (GI)

    Gingivitis will be assessed using the Gingival Index (GI), where a score of 0 to 3 will be assigned to six teeth, representing six segments of jaws, at baseline and week 3 of the study according to the following criteria. For each participant, an average of the scores for all 6 teeth is calculated.

    0 Absence of inflammation.

    1. Mild inflammation - slight change in color and little change in texture.
    2. Moderate inflammation - moderate glazing, redness, edema, and hypertrophy. Bleeding on pressure.
    3. Severe inflammation - marked redness and hypertrophy. Tendency to spontaneous bleeding. Ulceration.

    Measured: day 22

  5. Degree of Gingival Bleeding as Assessed by the Bleeding on Probing (BOP) Index

    Bleeding on probing (BOP) as described in Ainamo \& Bay 1975 will be assessed, where each of 4 gingival areas (disto-buccal, midbuccal, mid-lingual, and mesio-lingual) around each tooth will be light probed and scored from 0 to 2 as follows. For each participant, an average of the scores for the 4 gingival areas is calculated.

    0 Absence of bleeding after 30 seconds

    1. Bleeding after 30 seconds
    2. Immediate bleeding

    Measured: day 1

  6. Degree of Gingival Bleeding as Assessed by the Bleeding on Probing (BOP) Index

    Bleeding on probing (BOP) as described in Ainamo \& Bay 1975 will be assessed, where each of 4 gingival areas (disto-buccal, midbuccal, mid-lingual, and mesio-lingual) around each tooth will be light probed and scored from 0 to 2 as follows. For each participant, an average of the scores for all teeth is calculated, an average of the scores for the 4 gingival areas is calculated.

    0 Absence of bleeding after 30 seconds

    1. Bleeding after 30 seconds
    2. Immediate bleeding

    Measured: day 22

Secondary outcomes (2)
  1. Discoloration of Teeth as Assessed by the Vita Scale

    Objective observation of Discoloration of teeth will be recorded using a Vita scale. The color of the participant's teeth is matched to the colors on the scale. The colors in the scale are A1, A2, A3, A3.5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, and D4--the letter portion of the scale indicates a tooth color of reddish-brownish (A), reddish-yellowish (B), greyish (C), or reddish-grey (D), and the number portion of the scale indicates degree of discoloration, with 1 indicating least discoloration and 4 indicating the most discoloration.

    Measured: day 1

  2. Discoloration of Teeth as Assessed by the Vita Scale

    Objective observation of Discoloration of teeth will be recorded using a Vita scale. The color of the participant's teeth is matched to the colors on the scale. The colors in the scale are A1, A2, A3, A3.5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, and D4--the letter portion of the scale indicates a tooth color of reddish-brownish (A), reddish-yellowish (B), greyish (C), or reddish-grey (D), and the number portion of the scale indicates degree of discoloration, with 1 indicating least discoloration and 4 indicating the most discoloration.

    Measured: day 22

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted18 Jul 2017
  2. Study start18 Oct 2017
  3. Primary completion8 Sep 2018
  4. Study completion8 Sep 2018

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Crossover
Model description
A Randomized, Double-blind, Crossover, Placebo-controlled Clinical Trial
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
70 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03219840
Sponsor's protocol ID
HSC-DB-17-0313
Status last verified
Jan 2021
First submitted
13 Jul 2017
Last updated
8 Feb 2021
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Cetylpyridinium Chloride (CPC) 0.09% + Xylitol chewing gum and Xylitol only chewing gum in people with Gingivitis and Plaque, Dental, run by The University of Texas Health Science Center, Houston at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 8 Feb 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 8 Feb 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Degree of Plaque as Assessed by the Turesky Modification of the Quigley-Hein Plaque Index (time frame: day 1). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Feb 2021; AzTrials last refreshed its copy on 1 Nov 2026.

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