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Nitrate, Stannous Fluoride

Phase 2

Dentin Hypersensitivity | Unknown | ENT |GSK plc|Last Updated: Sep 11, 2020

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment123

FDA Designations

No designations recorded

Clinical trial landscape

Nitrate, Stannous Fluoride · 1 trial · 2 indications

Phase 2 1
NCT03943095Study to Characterize the Efficacy of a Dual Active Dentifrice for the Relief of Dentin HypersensitivityDentin Hypersensitivity
COMPLETED123 Analytics
PHASE2COMPLETED
Study to Characterize the Efficacy of a Dual Active Dentifrice for the Relief of Dentin Hypersensitivity
Dentin HypersensitivityUnlock trial analytics

Study Endpoints

Primary Endpoints

Mean Schiff Sensitivity Score (Average of the Two Selected Test Teeth) at Baseline (Day 0)
Baseline (Day 0)

Evaporative air sensitivity was assessed on facial surfaces of eligible incisor,canine and pre-molar teeth by directing a one second application of air from standard dental syringe held perpendicular to tooth surface, approximately 1-2 millimeter (mm) coronal to the gingival margin from a distance of approximately 1 centimeter (cm).Participant response to the stimulus was evaluated using the Schiff sensitivity scale, an examiner-based index scored immediately following administration of the evaporative air stimulus.0=Does not respond to air stimulation;1=Responds to air stimulus but does not request discontinuation of stimulus;2=Responds to air stimulus and requests discontinuation or moves from stimulus;3=Responds to stimulus,considers stimulus to be painful, requests discontinuation of the stimulus. Score range 0-3; a decrease in Schiff sensitivity score indicates an improvement.Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Schiff Sensitivity Score (Average of the Two Selected Test Teeth) at Day 3
Day 3

Evaporative air sensitivity was assessed on facial surfaces of eligible incisor,canine and pre-molar teeth by directing a one second application of air from a standard dental syringe held perpendicular to the tooth surface, approximately 1-2 mm coronal to the gingival margin, and from a distance of approximately 1 cm. Participant response to the stimulus was evaluated using the Schiff sensitivity scale, an examiner-based index scored immediately following administration of the evaporative air stimulus. 0=Does not respond to air stimulation;1=Responds to air stimulus but does not request discontinuation of stimulus;2=Responds to air stimulus and requests discontinuation or moves from stimulus;3=Responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus. Score range 0-3; a decrease in Schiff sensitivity score indicates an improvement. Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Schiff Sensitivity Score (Average of the Two Selected Test Teeth) at Day 7
Day 7

Evaporative air sensitivity was assessed on facial surfaces of eligible incisor,canine and pre-molar teeth by directing a one second application of air from a standard dental syringe held perpendicular to the tooth surface, approximately 1-2 mm coronal to the gingival margin, and from a distance of approximately 1 cm. Participant response to the stimulus was evaluated using the Schiff sensitivity scale, an examiner-based index scored immediately following administration of the evaporative air stimulus. 0=Does not respond to air stimulation;1=Responds to air stimulus but does not request discontinuation of stimulus;2=Responds to air stimulus and requests discontinuation or moves from stimulus;3=Responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus. Score range 0-3; a decrease in Schiff sensitivity score indicates an improvement. Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Schiff Sensitivity Score (Average of the Two Selected Test Teeth) at Day 14
Day 14

Evaporative air sensitivity was assessed on facial surfaces of eligible incisor,canine and pre-molar teeth by directing a one second application of air from a standard dental syringe held perpendicular to the tooth surface, approximately 1-2 mm coronal to the gingival margin, and from a distance of approximately 1 cm. Participant response to the stimulus was evaluated using the Schiff sensitivity scale, an examiner-based index scored immediately following administration of the evaporative air stimulus. 0=Does not respond to air stimulation;1=Responds to air stimulus but does not request discontinuation of stimulus;2=Responds to air stimulus and requests discontinuation or moves from stimulus;3=Responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus. Score range 0-3; a decrease in Schiff sensitivity score indicates an improvement. Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Schiff Sensitivity Score (Average of the Two Selected Test Teeth) at Day 28
Day 28

Evaporative air sensitivity was assessed on facial surfaces of eligible incisor,canine and pre-molar teeth by directing a one second application of air from a standard dental syringe held perpendicular to the tooth surface, approximately 1-2 mm coronal to the gingival margin, and from a distance of approximately 1 cm. Participant response to the stimulus was evaluated using the Schiff sensitivity scale, an examiner-based index scored immediately following administration of the evaporative air stimulus. 0=Does not respond to air stimulation;1=Responds to air stimulus but does not request discontinuation of stimulus;2=Responds to air stimulus and requests discontinuation or moves from stimulus;3=Responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus. Score range 0-3; a decrease in Schiff sensitivity score indicates an improvement. Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Schiff Sensitivity Score (Average of the Two Selected Test Teeth) at Day 56
Day 56

Evaporative air sensitivity was assessed on facial surfaces of eligible incisor,canine and pre-molar teeth by directing a one second application of air from a standard dental syringe held perpendicular to the tooth surface, approximately 1-2 mm coronal to the gingival margin, and from a distance of approximately 1 cm. Participant response to the stimulus was evaluated using the Schiff sensitivity scale, an examiner-based index scored immediately following administration of the evaporative air stimulus. 0=Does not respond to air stimulation;1=Responds to air stimulus but does not request discontinuation of stimulus;2=Responds to air stimulus and requests discontinuation or moves from stimulus;3=Responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus. Score range 0-3; a decrease in Schiff sensitivity score indicates an improvement. Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Tactile Threshold (Average of the Two Selected Test Teeth) at Baseline (Day 0)
Baseline (Day 0)

Tactile sensitivity was assessed for eligible incisor,canine and pre-molar teeth using a constant pressure probe (Yeaple probe),starting at 10 gram (g) and rising in increments of 10 g until the tactile threshold or maximum force for that visit is reached.The probe tip was placed perpendicular to the facial surface of tooth and drawn slowly across the exposed dentine.After each application,the participant was asked to indicate whether they experienced any pain or discomfort (yes/no response).The pressure setting at which participant gave two consecutive 'yes' responses was recorded as the tactile threshold (g).At Baseline, the maximum force was 20 g;at all subsequent visits, 80 g.If no sensitivity was found at the upper limit,the tactile threshold is recorded as greater than (\>) 20 g (baseline) or \>80 g (all other visits).An increase in tactile threshold indicates an improvement.Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Tactile Threshold (Average of the Two Selected Test Teeth) at Day 3
Day 3

Tactile sensitivity was assessed for eligible incisor, canine and pre-molar teeth using a constant pressure probe (Yeaple probe),starting at 10 g and rising in increments of 10 g until the tactile threshold or maximum force for that visit is reached. The probe tip was placed perpendicular to the facial surface of tooth and drawn slowly across the exposed dentine.After each application, the participant was asked to indicate whether they experienced any pain or discomfort (yes/no response). The pressure setting at which the participant gave two consecutive 'yes' responses was recorded as the tactile threshold (g). At Baseline,the maximum force is 20 g; at all subsequent visits, 80 g. If no sensitivity was found at the upper limit,the tactile threshold is recorded as greater than (\>) 20 g (baseline) or \>80 g (all other visits). An increase in tactile threshold indicates an improvement.Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Tactile Threshold (Average of the Two Selected Test Teeth) at Day 7
Day 7

Tactile sensitivity was assessed for eligible incisor, canine and pre-molar teeth using a constant pressure probe (Yeaple probe),starting at 10 g and rising in increments of 10 g until the tactile threshold or maximum force for that visit is reached. The probe tip was placed perpendicular to the facial surface of tooth and drawn slowly across the exposed dentine.After each application, the participant was asked to indicate whether they experienced any pain or discomfort (yes/no response). The pressure setting at which the participant gave two consecutive 'yes' responses was recorded as the tactile threshold (g). At Baseline,the maximum force is 20 g; at all subsequent visits, 80 g. If no sensitivity was found at the upper limit,the tactile threshold is recorded as greater than (\>) 20 g (baseline) or \>80 g (all other visits). An increase in tactile threshold indicates an improvement.Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Tactile Threshold (Average of the Two Selected Test Teeth) at Day 14
Day 14

Tactile sensitivity was assessed for eligible incisor, canine and pre-molar teeth using a constant pressure probe (Yeaple probe),starting at 10 g and rising in increments of 10 g until the tactile threshold or maximum force for that visit is reached. The probe tip was placed perpendicular to the facial surface of tooth and drawn slowly across the exposed dentine.After each application, the participant was asked to indicate whether they experienced any pain or discomfort (yes/no response). The pressure setting at which the participant gave two consecutive 'yes' responses was recorded as the tactile threshold (g). At Baseline,the maximum force is 20 g; at all subsequent visits, 80 g. If no sensitivity was found at the upper limit,the tactile threshold is recorded as greater than (\>) 20 g (baseline) or \>80 g (all other visits). An increase in tactile threshold indicates an improvement.Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Tactile Threshold (Average of the Two Selected Test Teeth) at Day 28
Day 28

Tactile sensitivity was assessed for eligible incisor, canine and pre-molar teeth using a constant pressure probe (Yeaple probe),starting at 10 g and rising in increments of 10 g until the tactile threshold or maximum force for that visit is reached. The probe tip was placed perpendicular to the facial surface of tooth and drawn slowly across the exposed dentine.After each application, the participant was asked to indicate whether they experienced any pain or discomfort (yes/no response). The pressure setting at which the participant gave two consecutive 'yes' responses was recorded as the tactile threshold (g). At Baseline,the maximum force is 20 g; at all subsequent visits, 80 g. If no sensitivity was found at the upper limit,the tactile threshold is recorded as greater than (\>) 20 g (baseline) or \>80 g (all other visits). An increase in tactile threshold indicates an improvement.Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Mean Tactile Threshold (Average of the Two Selected Test Teeth) at Day 56
Day 56

Tactile sensitivity was assessed for eligible incisor, canine and pre-molar teeth using a constant pressure probe (Yeaple probe),starting at 10 g and rising in increments of 10 g until the tactile threshold or maximum force for that visit is reached. The probe tip was placed perpendicular to the facial surface of tooth and drawn slowly across the exposed dentine.After each application, the participant was asked to indicate whether they experienced any pain or discomfort (yes/no response). The pressure setting at which the participant gave two consecutive 'yes' responses was recorded as the tactile threshold (g). At Baseline,the maximum force is 20 g; at all subsequent visits, 80 g. If no sensitivity was found at the upper limit,the tactile threshold is recorded as greater than (\>) 20 g (baseline) or \>80 g (all other visits). An increase in tactile threshold indicates an improvement.Mean was calculated once by selecting two test teeth which were located in different quadrants of mouth.

Number of Sensitive Teeth (Schiff Sensitivity Score Greater Than or Equal to [>=] 1) on Day 0 (Baseline)
Baseline (Day 0)

Number of eligible teeth were identified at screening with Schiff sensitivity score of \>=1 (Schiff sensitivity scale: 0=Participant does not respond to air stimulation; 1=Participant responds to air stimulus but does not request discontinuation of stimulus; 2=Participant responds to air stimulus and requests discontinuation or moves from stimulus; 3=Participant responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus). A decrease in the number of sensitive teeth indicates an improvement.

Number of Sensitive Teeth (Schiff Sensitivity Score >= 1) on Day 3
Day 3

Number of eligible teeth were identified at screening with Schiff sensitivity score of \>=1 (Schiff sensitivity scale: 0=Participant does not respond to air stimulation; 1=Participant responds to air stimulus but does not request discontinuation of stimulus; 2=Participant responds to air stimulus and requests discontinuation or moves from stimulus; 3=Participant responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus). A decrease in the number of sensitive teeth indicates an improvement.

Number of Sensitive Teeth (Schiff Sensitivity Score >= 1) on Day 7
Day 7

Number of eligible teeth were identified at screening with Schiff sensitivity score of \>=1 (Schiff sensitivity scale: 0=Participant does not respond to air stimulation; 1=Participant responds to air stimulus but does not request discontinuation of stimulus; 2=Participant responds to air stimulus and requests discontinuation or moves from stimulus; 3=Participant responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus). A decrease in the number of sensitive teeth indicates an improvement.

Number of Sensitive Teeth (Schiff Sensitivity Score >= 1) on Day 14
Day 14

Number of eligible teeth were identified at screening with Schiff sensitivity score of \>=1 (Schiff sensitivity scale: 0=Participant does not respond to air stimulation; 1=Participant responds to air stimulus but does not request discontinuation of stimulus; 2=Participant responds to air stimulus and requests discontinuation or moves from stimulus; 3=Participant responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus). A decrease in the number of sensitive teeth indicates an improvement.

Number of Sensitive Teeth (Schiff Sensitivity Score >= 1) on Day 28
Day 28

Number of eligible teeth were identified at screening with Schiff sensitivity score of \>=1 (Schiff sensitivity scale: 0=Participant does not respond to air stimulation; 1=Participant responds to air stimulus but does not request discontinuation of stimulus; 2=Participant responds to air stimulus and requests discontinuation or moves from stimulus; 3=Participant responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus). A decrease in the number of sensitive teeth indicates an improvement.

Number of Sensitive Teeth (Schiff Sensitivity Score >= 1) on Day 56
Day 56

Number of eligible teeth were identified at screening with Schiff sensitivity score of \>=1 (Schiff sensitivity scale: 0=Participant does not respond to air stimulation; 1=Participant responds to air stimulus but does not request discontinuation of stimulus; 2=Participant responds to air stimulus and requests discontinuation or moves from stimulus; 3=Participant responds to stimulus, considers stimulus to be painful, and requests discontinuation of the stimulus). A decrease in the number of sensitive teeth indicates an improvement.

Secondary Endpoints

Change From Baseline in Schiff Sensitivity Score at Day 56
Baseline (Day 0), Day 56
Change From Baseline (Day 0) in Tactile Threshold on Day 56
Baseline (Day 0), Day 56
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Test DentifriceEXPERIMENTALParticipants will be instructed to apply a strip of dentifrice (a full brush head) containing 5 % weight by weight (w/w) potassium nitrate and 0.454% w/w stannous fluoride (1100 parts per million \[ppm\] fluoride). Participants will brush their two selected 'test teeth' first, followed by the whole mouth for at least one timed minute, twice daily (morning and evening), and will be permitted to rinse with water post-brushing.
Control DentifriceACTIVE_COMPARATORParticipants will be instructed to apply a strip of dentifrice (a full brush head) containing 0.454% w/w stannous fluoride (1100 ppm fluoride). Participants will brush their two selected 'test teeth' first, followed by the whole mouth for at least one timed minute, twice daily (morning and evening), and will be permitted to rinse with water post-brushing.

Interventions

NameTypeDescription
Potassium NitrateOTHERThe test dentifrice contains 5% w/w potassium nitrate.
Stannous FluorideOTHERThe test and control dentifrices contain 0.454% w/w stannous fluoride (1100 ppm fluoride).
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Participant provision of a signed and dated informed consent document indicating that the participant has been informed of all pertinent aspects of the study before any assessment is performed * Participant who is willing and able to comply with scheduled visits, treatment pla...

Countries:Canada
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Frequently asked questions about Nitrate, Stannous Fluoride

What is Nitrate used for?

Nitrate is an investigational small molecule being developed by GSK plc for the treatment of dentin sensitivity, also known as dentinal hypersensitivity or dentin hypersensitivity. It is being studied for its ability to reduce dental pain associated with these conditions.

Who makes Nitrate?

Nitrate is being developed by GSK plc, a pharmaceutical company traded on the London Stock Exchange under the ticker GSK. The drug is currently in clinical development for dentin sensitivity and related hypersensitivity conditions.

What phase is Nitrate in?

Nitrate is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. Clinical trials have been completed, but the drug remains in early-stage development for dentin hypersensitivity.

What clinical trials is Nitrate in?

Nitrate has been studied in three completed clinical trials. NCT01587950 was a Phase 1 study with 12 participants, NCT02226562 was a Phase 2 study with 191 participants, and NCT03943095 was a Phase 2 study with 123 participants, all evaluating its effects on dentin hypersensitivity.

Is Nitrate the same as potassium nitrate?

Nitrate is being studied in formulations that include potassium nitrate, as indicated by the clinical trial NCT01587950, which evaluated the effects of potassium nitrate in reducing dentinal hypersensitivity. However, Nitrate as a drug asset may refer to the active ingredient or the product.