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Not yet recruitingNCT07802886Updated Sep 3, 2026

A Clinical Study to Assess the Efficacy of a Calcium Sodium Phosphosilicate Toothpaste for the Relief of Dentine Hypersensitivity

An interventional study of Test Toothpaste and Regular Fluoride Toothpaste in Dentin Sensitivity, sponsored by HALEON. Not yet recruiting at 1 site in United Kingdom. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-03.

Sponsored by HALEON · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
192
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 21 studies in Dentin Sensitivity by HALEON — 3 open to participants now, 4 under way, none of them phase 3. Dentin Sensitivity · HALEON.

Planned enrollment
9th of 20
192 · median 185
Started
2026
with 3 others
No phase
18 of 21
2 open now
Registered
20th of 21
by date

Among the 21 studies in Dentin Sensitivity by HALEON, this one is the 9th largest by planned enrollment of the 20 interventional ones, is one of 4 that started in 2026, is one of 18 with no phase, and was the 20th registered.

By phase

21 studies; the count open now beside each. This study's row is marked.

No phasethis study18 · 2 open
Observational1 · 1 open
Phase 31 · 0 open
Phase 41 · 0 open

By the year they started

First in 2012; this study’s year is marked. 4 started in 2026.

Size and results

Median enrollment 185 across the 20 interventional studies, 375 across the 1 observational. Of the 17 that completed or were terminated, 12 (71%) have results posted.

Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 21 studies in Dentin Sensitivity by HALEON, or all of them as a file.
02

Study summary

The primary purpose of this study is to demonstrate the clinical efficacy of Test Toothpaste in reducing dentin hypersensitivity (DH) to an evaporative (air) stimulus, compared to a sodium fluoride reference toothpaste, after 8 weeks twice daily use.

Read the detailed description

This will be a single centre, 8-week, randomised, controlled, double-blind, 2-treatment arm, parallel group, stratified study in healthy participants with DH. Participants who meet the required study criteria at Screening and Baseline will be randomised to one of two treatments: a 5% CSPS toothpaste (Test Toothpaste) or a regular sodium fluoride toothpaste (Reference Toothpaste). Sufficient participants will be screened to ensure approximately 192 participants are randomised to investigational products (approximately 96 participants per treatment group) and approximately 172 participants complete the study (approximately 86 participants per treatment group).

03

Conditions studied

  • Dentin Sensitivity

Browse trials for

04

Who can participate

Ages eligible
18 Years and older
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

  • Participant provision of signed and dated before any study procedures are performed.
  • Participant is willing and able to comply with the study visit schedule, product usage instructions, lifestyle restrictions, and other study procedures.
  • Participant is in good general, oral and mental health with, in the opinion of the investigator or medically qualified designee, no or relevant abnormalities in self-reported medical history, or upon oral examination, that would impact their safety or wellbeing, or the outcomes of the study, if they were to participate in the study, or affect their ability to understand and follow study requirements.

Screening (Visit 1): Participant must have

  1. History of tooth sensitivity lasting more than six months but not more than 10 years (self-reported).
  2. Good general oral health, with a minimum of 20 natural teeth.
  3. Minimum of 2 accessible, non-adjacent teeth (incisors, canines, premolars), in different quadrants, which meet all the following criteria:

    1. Exposed dentine due to facial/cervical erosion, abrasion, or gingival recession (EAR).
    2. Modified Gingival Index (MGI)= 0 directly adjacent to the exposed dentine (i.e., the test area only).
    3. Clinical mobility= 0.
    4. Clinically confirmed DH to both tactile and evaporative (air) stimuli: Qualifying tactile threshold less than or equal to (\<=) 20g and Qualifying Schiff sensitivity score more than or equal to (>=) 2.

Baseline (Visit 2, Pre-Treatment)

  • Participant must have a minimum of two non-adjacent, accessible teeth (incisors, canines, premolars), in different quadrants, with clinically confirmed DH to both tactile and evaporative (air) stimuli at both Screening (Visit 1) and Baseline (Visit 2).

    1. Tactile threshold \<= 20g at Screening and Baseline.
    2. Schiff sensitivity score >= 2 at Screening and Baseline.
  • The clinical examiner will select two 'test teeth' from those which meet the tactile threshold and Schiff sensitivity score inclusion criteria at both Screening and Baseline.

Exclusion criteria

Exclusion Criteria:

  • Participant is an employee of the investigator site directly involved in the conduct of the study, or an employee of the investigator site otherwise supervised by the investigator, or a member of their immediate family.
  • Participant is an employee of the sponsor directly involved in the conduct of the study or a member of their immediate family.
  • Female participant who is pregnant or intending to become pregnant during the study (self-reported).
  • Female participant who is breastfeeding (self-reported).
  • Participant with known or suspected intolerance or to the study products, any of their stated ingredients or closely related compounds (self-reported).
  • Participant with a recent history (within the last year) of alcohol or other substance abuse (self-reported).
  • Participant is participating in or has participated in other studies (including non-medicinal studies) involving product(s) within 30 days of Screening (Visit 1) or plans to participate in other studies (including non-medicinal studies) during this study.
  • Participant has participated in a tooth sensitivity study within 8 weeks of Screening (Visit 1).
  • Participant is currently using an oral care product indicated for DH relief or care of sensitive teeth or has used such a product within 8 weeks of Screening (Visit 1).
  • Participant takes daily doses of medications/treatments which, in the opinion of the investigator or medically qualified designee, could interfere with their perception of tooth sensitivity (for example, analgesics, anticonvulsants, antihistamines that cause marked or moderate sedation, sedatives, tranquilizers, antidepressants, mood-altering and anti-inflammatory drugs).
  • Screening (Visit 1): Participant has taken antibiotics in the 2 weeks prior to Screening (Visit 1).
  • Baseline (Visit 2): Participant has taken antibiotics in the 2 weeks prior to Baseline (Visit 2), that is, during the acclimatization period.
  • Participant takes daily doses of a medication which, in the opinion of the investigator or medically qualified designee, is causing xerostomia.
  • Participant requires antibiotic prophylaxis for dental procedures.
  • Participant has had professional tooth de-sensitizing treatment within 8 weeks of Screening (Visit 1).
  • Participant has had a tooth bleaching procedure within 8 weeks of Screening (Visit 1).
  • Participant has had dental prophylaxis or supragingival professional mechanical plaque removal (PMPR) within 4 weeks of Screening (Visit 1).
  • Participant has had treatment for periodontal disease (including surgery) within 12 months of Screening (Visit 1).
  • Participant has had subgingival instrumentation within 3 months of Screening (Visit 1).
  • Participant with gross periodontal disease.
  • Participant with a tongue or lip piercing in the area of the test teeth.
  • Participant with evidence of gross intra-oral neglect or the need for extensive dental therapy.
  • Participant with a fixed or removable partial prosthesis which, in the opinion of the investigator or dentally qualified designee, could impact study outcomes.
  • Participant with multiple dental implants which, in the opinion of the investigator or dentally qualified designee, could impact study outcomes.
  • Participant has had orthodontic treatment (fixed or removable orthodontic braces/bands) within 6 months of Screening (Visit1).
  • Participant with a fixed or removable orthodontic retainer which, in the opinion of the investigator or dentally qualified designee, could impact study outcomes (e.g., Participant who is an intermittent user of a removable orthodontic retainer). Note: Teeth involved in a fixed orthodontic retainer may be used as 'test teeth' if, in the opinion of the investigator or dentally qualified designee, their selection would not impact study outcomes.
  • Specific Dentition Exclusions for 'Test teeth':

    1. Tooth with evidence of current/recent caries.
    2. Tooth with (self-reported) treatment for decay within 12 months of Screening (Visit 1).
    3. Tooth with exposed dentine and deep, defective, or facial restorations.
    4. Tooth with a full crown or veneer.
    5. Tooth adjacent to a bridge abutment or crown which, in the opinion of the investigator or dentally qualified designee, could impact study outcomes.
    6. Sensitive tooth with contributing etiologies other than EAR to exposed dentine.
    7. Sensitive tooth not expected to benefit from use of an anti-sensitivity toothpaste, in the opinion of the investigator or dentally qualified designee.
  • Participant has previously been enrolled in this study.
  • Participant who, in the opinion of the investigator or medically qualified designee, should not participate in the study.
Terms in these criteria, in plain language(4)

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.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

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.

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.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
192 participants (estimated)

Study arms

  • Experimental
    Test Toothpaste

    Participants will dose the toothbrush with a ribbon of Test Toothpaste, across the full brush head and will brush the entire dentition thoroughly for at least 1-timed minute, twice daily (morning \& evening), for approximately 56 days.

    Device: Test Toothpaste

  • Placebo comparator
    Reference Toothpaste (Negative Control)

    Participants will dose the toothbrush with a ribbon of Reference Toothpaste, across the full brush head and will brush the entire dentition thoroughly for at least 1-timed minute, twice daily (morning \& evening), for approximately 56 days.

    Other: Regular Fluoride Toothpaste

Interventions

  • DeviceTest Toothpaste

    Toothpaste containing 5.0 % weight/weight (w/w) CSPS.

  • OtherRegular Fluoride Toothpaste

    Regular fluoride toothpaste.

06

What researchers measure

Primary outcomes

  1. Change from Baseline in Schiff Sensitivity Score at Week 8

    Evaporative (air) sensitivity will be assessed on facial surfaces of teeth by directing a 1 second application of air from standard dental syringe held perpendicular to tooth surface. Participant's response to the stimulus will be evaluated using the Schiff sensitivity scale, an examiner-based index, scored immediately following administration of the evaporative (air) stimulus. Score ranged from 0 to 3, where 0 equal to (=) Did not respond to air stimulation; 1= Responded to air stimulus but did not request discontinuation of stimulus; 2= Responded to air stimulus and requested discontinuation or moved from stimulus; 3= Responded to stimulus, considered stimulus to be painful, requested discontinuation of the stimulus. Schiff sensitivity score will be derived as mean score for the two 'Test Teeth' selected at Baseline by the examiner. Change from Baseline will be calculated by subtracting Baseline score from Week 8 score. Lower score indicates improvement.

    Time frame: Baseline and Week 8

Secondary outcomes

  1. Change from Baseline in Tactile Threshold gram (g) at Week 8

    The tactile sensitivity will be assessed by administrating a constant pressure using a Yeaple probe. The tactile threshold is the maximum pressure applied without the participant reporting pain or discomfort. The tactile threshold for 2 selected test teeth will be determined by asking the participant whether the sensation caused discomfort. The pressure setting at which the participant gives two consecutives 'yes' responses will be recorded as the tactile threshold. The greater the tactile threshold, the less sensitive the tooth. Tactile threshold= average value for the two 'test teeth' identified at baseline. Change from baseline is calculated by subtracting Baseline value from Week 8 value.

    Time frame: Baseline and Week 8

  2. Change from Baseline in Schiff Sensitivity Score at Weeks 2 and 4

    Evaporative (air) sensitivity will be assessed on facial surfaces of teeth by directing a 1 second application of air from standard dental syringe held perpendicular to tooth surface. Participant's response to the stimulus will be evaluated using the Schiff sensitivity scale, an examiner-based index, scored immediately following administration of the evaporative (air) stimulus. Score ranged from 0 to 3, where 0= Did not respond to air stimulation; 1= Responded to air stimulus but did not request discontinuation of stimulus; 2= Responded to air stimulus and requested discontinuation or moved from stimulus; 3= Responded to stimulus, considered stimulus to be painful, requested discontinuation of the stimulus. Schiff sensitivity score will be derived as mean score for the two 'Test Teeth' selected at Baseline by the examiner. Change from Baseline will be calculated by subtracting Baseline score from Weeks 2 and 4 scores. Lower score indicates improvement.

    Time frame: Baseline, Week 2 and Week 4

  3. Change from Baseline in Tactile Threshold (g) at Weeks 2 and 4

    The tactile sensitivity will be assessed by administrating a constant pressure using a Yeaple probe. The tactile threshold is the maximum pressure applied without the participant reporting pain or discomfort. The tactile threshold for 2 selected test teeth will be determined by asking the participant whether the sensation caused discomfort. The pressure setting at which the participant gives two consecutives 'yes' responses will be recorded as the tactile threshold. The greater the tactile threshold, the less sensitive the tooth. Tactile threshold= average value for the two 'test teeth' identified at baseline. Change from baseline is calculated by subtracting Baseline value from Week 2 and Week 4 values.

    Time frame: Baseline, Week 2 and Week 4

07

Study locations

1 site
  • University of Bristol Dental School
    Bristol, BS1 2LY, United Kingdom
    • Nicola West · Contact
08

References and documents

Individual participant data

Plan to share: Yes — Anonymized individual participant data and study documents can be requested for further research from ww.clinical-trial-register@haleon.com

Supporting information: Study protocol, Statistical analysis plan, Informed consent form

Time frame: IPD will be made available within 6 months of publishing the results of the primary endpoints, key secondary endpoints and safety data of the study.

Access criteria: Access is provided after a research proposal is submitted and has received approval from the Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months, but an extension can be granted, when justified, for up to another 12 months.

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 Sep 3, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07802886
Lead sponsor
HALEON
Responsible party
Sponsor
First posted
Sep 3, 2026
Start date
Sep 2026 (estimated)
Primary completion
Mar 2027 (estimated)
Completion
Mar 2027 (estimated)
Last update
Sep 3, 2026

Study contacts

Haleon Response Center
Contact
ww.clinical-trial-register@haleon.com
+441932 95 95 00

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 not yet recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

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