ClinicalTrials.gg
CompletedNCT07685782Updated Jul 6, 2026

A Randomized, Comparative Study to Evaluate the Effect of RL3014A-DP0421 Mouthwash on the Oral Microbial Composition

An interventional study of RL3014A - DP0421 and CO3014AZ in Healthy, sponsored by Pierre Fabre Dermo Cosmetique. Completed at 1 site in Poland. Open to female participants aged 18 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-07-06.

Sponsored by Pierre Fabre Dermo Cosmetique (part of Pierre Fabre) · Not applicable, Interventional, and Supportive care

From the registry’s dates

  • Registered 2 years 3 months after the study started (first participant enrolled Feb 2024, registered Jun 2026).
Phase
Not applicable
Study type
Interventional
Enrollment
109
Allocation
Randomized
Ages
18 Years to 35 Years
Sex
Female
01

Study summary

The Laboratoires Pierre Fabre has on the market a product range of daily use mouthwash, all containing 0.05% of O-Cymen -5-ol, a broad-spectrum bactericide. From other mouth rinses (reference mouthwash) it is known that they have a clear effect on the microbial composition of the tongue and saliva samples. RL3014A - DP0421, is the product of the range with the most representative formula.

The aim of the study is to evaluate if the product RL3014A - DP0421 respects the buccal flora and does not show an undesired effect on the microbial equilibrium of the mouth.

Read the detailed description

This study is conducted as a monocentric, randomized, controlled and blinded-label study, in parallel groups.

Study population: Adults with healthy gum status included and randomized in 4 parallel groups:

  • Group 1 (Tested group). Group with standardized hygiene and applying the tested mouthwash (RL3014A - DP0421).
  • Group 2 (Positive control group). Group with standardized hygiene and applying the positive control mouthwash.
  • Group 3 (Reference group). Group with standardized hygiene and applying the reference mouthwash.
  • Group 4 (Negative control group). Group with standardized hygiene only

    4 visits are planned:

  • Visit 1: Screening (Day -14 ± 1 day).
  • Visit 2: Inclusion (Day 0).
  • Visit 3: Intermediate (Day 14 ± 1 day).
  • Visit 4: End of study (Day 28 ± 1 day).

The maximal duration of subject's participation is 44 days from the selection visit (visit 1) to the end of the study.

02

Conditions studied

  • Healthy
03

In context

Lead sponsor

Pierre Fabre Dermo Cosmetique is the lead sponsor of 59 studies on the registry; 3 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 35 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Eligibility criteria

Selection

Criteria related to the population:

  • Subject female aged between 18 to 35 years included
  • Subject having signed his/her written for his/her participation in the study
  • Subject affiliated to a social security system or health insurance, or is a beneficiary (if required by national regula-tions)
  • For woman of :

    • Use of an effective method of , as assessed by the investigator for at least 1 month before the selection visit (3 months in case of hormonal contraception)
    • Accept to go on using it during the whole duration of the study
  • having signed their written Informed Consent form (ICF) for their participation in the study and a photograph authorization
  • certifying the truth of the personal information declared to the Investigator
  • able to understand the language used in the investigation center and the information given
  • able to comply with the protocol and follow protocol's constraints and specific requirements

Criteria related to subject's health:

- considered "healthy subject" by the Investigator

Criteria related to subject's oral health:

  • Subject with a healthy gum status according to the investigator
  • Subject with at least 20 natural teeth specially tooth 12, 16, 24, 36, 32 and 44 (If one of these teeth is missing, it will be replaced by a similar natural tooth (i.e. replacement of a molar by another molar) on the same jaw)
  • Subjects with no edentulous

Non-selection criteria

Criteria related to the population:

  • Subject unable to understand the information given including study procedures (for linguistic or psychiatric reasons) and to give his/her consent in writing and to report required information in writing in his/her diary
  • For woman of childbearing potential: pregnant or breastfeeding or planning to be pregnant during the study
  • Subject who has forfeited his/her freedom by administrative or legal award or is under guardianship
  • Subject who, in the judgement of the investigator, is not likely to be compliant with study-related constraints and requirements
  • Subject who is currently participating, who plans to participate or who has participated within the previous weeks or months in another clinical study liable to interfere with the study assessments according to the investigator's assessment
  • Subject is in a position likely to represent a conflict of interest and/or is a family member of any people involved in the conduct of the study (secretary, nurse, technician,…), of the site
  • Smoker subject (cigarettes and/or user of electronic cigarette)

Criteria related to the medical history / teeth condition:

  • Subject with history of or allergy or intolerance to any of the study products ingredients
  • Subject with history of hypersensitivity or allergy or intolerance to any material used for the research
  • Subject with active teeth decay
  • Subject with teeth showing evidence of facets of attrition, premature contact, cracked enamel in the mouth liable to interfere with study data according to the investigator
  • Subject with teeth showing evidence of irreversible pulpitis and active periodontal disease
  • Subject having occlusal overload or occlusal adjustment recently made on teeth
  • Subject having a cutaneous-mucosal disease liable to interfere with study data according to the investigator, especially herpes or medical history herpes, aphtous and medical history of aphtous, lichen planus, chronic lupus erythematosis, sores or mouth ulcer
  • Subject with an odontological condition (like xerostomia,..), an acute chronic or progressive disease or history of disease considered by the investigator hazardous for the subject or incompatible with the study (like immune system disorder, asthma crisis…)

Criteria related to treatments and/or products:

  • Surgery, chemical or physical treatment in the mouth liable to interfere with study data or with the quantity and quality of saliva according to the investigator assessment within 2 months before the selection visit or planned during the study
  • Systemic or topical antibiotics in the mouth liable to interfere with study data according to the investigator assessment within 2 months before the selection visit or planned during the study
  • Subject having modified his/her hygiene or care habits in the mouth (including modification of the use of toothpaste and/ or toothbrush and/or mouthwash) within 7 days before the selection visit
  • Systemic treatment/product or topical treatment/product in the mouth liable to interfere with study data according to the investigator assessment, especially: acetylsalicylic acid or derivatives, anti-inflammatories and other analgesic, antihistaminics, , , calcic inhibitors and anticonvulsants ( within 48 hours before the selection visit or planned during the study
  • Subject planning to have any dental care during the study
  • Any other previous/concomitant treatment or product considered by the investigator liable to interfere with the study data or incompatible with the study requirements or hazardous for the subject

Inclusion criteria

Criteria related to the population:

  • For woman of childbearing potential:

    • Use of an effective method of contraception, as assessed by the investigator for at least 1 month before the selection visit (3 months in case of hormonal con-traception)
    • Accept to go on using it during the whole duration of the study
  • Subject having been compliant to the toothpaste and toothbrush use according to the investigator and still willing to follow it

Criteria related to the teeth condition:

  • Subject still having a healthy gum status according to the investigator
  • Subject still having at least 20 natural teeth specially tooth 12, 16, 24, 36, 32 and 44
  • Subject still not edentulous

Criteria related to the products:

- Subject whose performed his/her last teeth brushing either the evening before the inclusion visit (if the inclusion visit is performed in the morning) or in the morning of the inclusion visit (if the inclusion visit is performed in the afternoon).

Non-inclusion criteria

Criteria related to the population:

  • For woman of childbearing potential: pregnant or breastfeeding or planning to be pregnant during the study
  • Subject who has forfeited his/her freedom by administrative or legal award or is under guardianship since the selection visit
  • Subject who, in the judgement of the investigator, is not likely to be compliant with study-related constraints and requirements
  • Subject who is currently participating, who plans to participate or who has participated since the selection visit in another clinical study liable to interfere with the study assessments according to the investigator's assessment
  • Introduction of smoking habits (cigarettes and/or user of electronic cigarette) since the selection visit
  • Subject having eaten or drunk alcohol, tea or coffee within 4 hours prior to the inclusion visit

Criteria related to the medical history / teeth condition:

  • Subject with hypersensitivity or allergy or intolerance to any of the study products ingredients since the selection visit
  • Subject with hypersensitivity or allergy or intolerance to any material used for the research since the selection visit
  • Subject with active teeth decay since the selection visit
  • Subject with missing teeth since the selection visit
  • Subject with teeth showing evidence of facets of attrition, premature contact, cracked enamel in the mouth liable to interfere with study data according to the investigator since the selection visit
  • Subject with teeth showing evidence of irreversible pulpitis and active periodontal disease since the selection visit
  • Subject having occlusal overload or occlusal adjustment recently made on teeth since the selection visit
  • Subject having a cutaneous-mucosal disease liable to interfere with study data according to the investigator, especially herpes or medical history herpes, aphtous and medical history of aphtous, lichen planus, chronic lupus erythematosis, sores or mouth ulcer since the selection visit
  • Subject with an odontological condition (like xerostomia,..), an acute chronic or progressive disease or history of disease since the selection visit considered by the investigator hazardous for the subject or incompatible with the study (like immune system disorder, asthma crisis…),

Criteria related to treatments and/or products:

  • Surgery, chemical or physical treatment in the mouth liable to interfere with study data according to the investigator assessment since the selection visit or planned during the study
  • Systemic or topical antibiotics in the mouth liable to interfere with study data according to the investigator assessment within since the selection visit or planned during the study
  • Systemic treatment/product or topical treatment/product in the mouth liable to interfere with study data according to the investigator assessment, especially: acetylsalicylic acid or derivatives, anti-inflammatories and other analgesic, antihistaminics, corticosteroids, immunosuppressants, calcic inhibitors and anticonvulsants since the selection visit or planned during the study
  • Subject having had a dental care since the selection visit or planned during the study
  • Any other concomitant treatment or product considered by the investigator liable to in-terfere with the study data or incompatible with the study requirements or hazardous for the subject taken or applied since the selection visit
  • Subject having use another toothpaste and/or toothbrush than study products since the selection visit
  • Subject having use a mouthwash since the selection visit
Terms in these criteria, in plain language(7)

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.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
109 participants (actual)

Study arms

  • Experimental
    Tested group

    Other: RL3014A - DP0421 · Other: Standardized hygiene

  • Active comparator
    Positive control group

    Other: CO3014AZ · Other: Standardized hygiene

  • Active comparator
    Reference group

    Other: CO3014AY · Other: Standardized hygiene

  • Other
    Negative control group

    Other: Standardized hygiene

Interventions

  • OtherRL3014A - DP0421

    Tested product. 2 applications per day for 28 days of the tested mouthwash

  • OtherCO3014AZ

    Positive control product. 2 applications per day for 28 days of the positive control mouthwash

  • OtherCO3014AY

    Reference product. 2 applications per day for 28 days of the reference mouthwash

  • OtherStandardized hygiene

    standardized hygiene with a toothpaste and a soft toothbrush provided by the sponsor and used for 44 days 2 times a day

06

What researchers measure

Primary outcomes

  1. Microbiome evaluation of the back of the tongue

    Tongue swab sampling (cotton-swab samples)

    Time frame: Visit 2 (Day 0) and Visit 4 (Day 28)

  2. Microbiome evaluation of the saliva

    Liquid saliva sampling

    Time frame: Visit 2 (Day 0) and Visit 4 (Day 28)

  3. Proteomic analysis of saliva

    Liquid saliva sampling

    Time frame: Visit 2 (Day 0) and Visit 4 (Day28)

Secondary outcomes

  1. Plaque index (TQHIP) score

    Clinical assessment of the plaque using the Turesky modification of the Quigley-Hein Index performed by the dentist (scale from 0 to 5)

    Time frame: Visit 2 (Day 0), Visit 3 (Day 14) and Visit 4 (Day 28)

  2. Modified Gingival index of Lobene

    Clinical assessment of the gums state using the Modified Gingival Index of Lobene (GI) (scale from 0 to 4)

    Time frame: Visit 2 (Day 0), Visit 3 (Day 14) and Visit 4 (Day 28)

  3. Recording of adverse events

    Adverse events occurrence will be determined by the subject spontaneous reporting, the investigator's non-leading questioning and his/her clinical evaluation

    Time frame: From Visit 1 (Day 1) to Visit 4 (Day 28 or early termination)

07

Study locations

1 site
  • EUROFINS Dermscan Poland Sp. z o.o.
    Gdansk, Poland 80288, Poland
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 6, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT07685782
Responsible party
Sponsor
First posted
Jul 6, 2026
Start date
Feb 29, 2024
Primary completion
Aug 28, 2024
Completion
Aug 28, 2024
Last update
Jul 6, 2026

Study contacts

Agata WAGNER
principal investigator · EUROFINS Dermscan Poland

Oversight

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

Not currently enrolling

This study is completed, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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