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This will be a randomized, controlled, single center, single- blind, 3 period, 3 treatment, cross-over, in situ design which consists of placing pre-eroded bovine enamel specimens intra orally using a palatal appliance and testing the remineralizing performance of the experimental (dentifrice containing 0.254 Percent weight by weight [%, w/w] sodium fluoride (1150 parts per million [ppm] fluoride) and 5% KNO3 [potassium nitrate]), comparator (dentifrice containing 0.454% w/w stannous fluoride (1100 ppm fluoride) and placebo (Fluoride free placebo containing 5% KNO3 [0 ppm fluoride] ) dentifrices 2 and 4 hours (hrs) post treatment application, based on surface micro hardness measurements. This study will be carried out in healthy adults with a maxillary dental arch suitable for the retention of the palatal appliance.
The aim of this study is to investigate the performance of an experimental dentifrice formulation in promoting enamel remineralization and inhibiting post-treatment enamel demineralization in an in situ erosion model, in comparison with a fluoride-free placebo and with a marketed competitor dentifrice product. The study will have 4 visits, 1 screening visit to assess participants eligibility and 3 treatment visits to assess product efficacy, where the treatment product will be dispensed and used under the supervision of a suitably trained study site personnel. Prior to each treatment visit, there will be a washout period of a minimum of 3 days. During this period participants will use their own dentifrice for at least one day, and a fluoride free dentifrice (provided) for two days prior to the next scheduled visit (including in the morning of the scheduled visit) to minimize any carry-over effects of the fluoride toothpaste.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Test product | Experimental | Participants will apply a full ribbon of the test product (1.5 grams [g]) containing 0.254% w/w sodium fluoride and 5% KNO3. |
|
| Comparator Product | Active Comparator | Participants will apply a full ribbon of the comparator product (1.5 g orally) containing 0.454% w/w stannous fluoride. |
|
| Placebo Product | Placebo Comparator | Participants will apply a full ribbon of the placebo (1.5 g orally) containing 5% KNO3. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| 0.254% w/w sodium fluoride and 5% KNO3 | Drug | Dentifrice containing 0.254% w/w sodium fluoride (1150 ppm fluoride) and 5% KNO3; plus 0.25% PVM/MA copolymer and 2.5% sodium lactate. Participants will brush it on the buccal surfaces of their natural teeth for 25 timed seconds and then swish the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, the participants will gently rinse their mouths with 15 millilitres [mL] of tap water for 10 seconds before expectorating again. |
| Measure | Description | Time Frame |
|---|---|---|
| % Surface Micro Hardness Recovery (SMHR; Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to a Fluoride Free Placebo Dentifrice to Enhance Remineralization of Enamel) | The %SMHR was calculated to assess the changes in mineralization status of enamel specimens. The mean indent length (micrometer) from five Knoop microindentations within each specimen was measured at baseline (B), after the first erosive challenge (E1), and after 2 and 4 hours intraoral phase (R). An increase in the indentation length compared to the baseline indicates softening of the enamel surface while decrease in the indentation length represents re-hardening of enamel surface. The %SMHR was calculated as : %SMHR = [(E1-R)/(E1-B)]*100. Greater values of %SMHR indicate that greater remineralization has occurred, thus higher values are more favorable. | After 4 hrs following single exposure of treatment |
| Measure | Description | Time Frame |
|---|---|---|
| % Relative Erosion Resistance (RER; Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to a Fluoride Free Placebo Dentifrice to Inhibit Demineralization of Enamel) | The %RER was calculated to assess the ability of treated enamel specimens to provide a combined benefit in terms of enhanced remineralization and acid resistance of the enamel. The mean indent length (micrometer) from five Knoop microindentations within each specimen was measured at baseline (B), after the first erosive challenge (E1), and after the second erosive challenge (E2) (E2 is measured for after both 2 and 4 hours of remineralization). An increase in the indentation length compared to the baseline indicates softening of the enamel surface while decrease in the indentation length represents re-hardening of enamel surface. The %RER was calculated as : %RER = [(E1-E2)/ (E1-B)]*100. Higher values of %RER indicate greater resistance to erosion, thus higher values are more favorable. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| GSK Clinical Trials | GlaxoSmithKline | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| GSK Investigational Site | Indianapolis | Indiana | 46202 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 32303206 | Derived | Creeth JE, Burnett GR, Souverain A, Gomez-Pereira P, Zero DT, Lippert F, Hara AT. In situ efficacy of an experimental toothpaste on enamel rehardening and prevention of demineralisation: a randomised, controlled trial. BMC Oral Health. 2020 Apr 17;20(1):118. doi: 10.1186/s12903-020-01081-y. |
| Label | URL |
|---|---|
| Related Info | View source |
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IPD for this study will be made available via the Clinical Study Data Request site.
IPD is available via the Clinical Study Data Request site (click on the link provided below)
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.
A total of 68 participates were screened, out of which 62 participants were randomized in the study and 6 participants were not randomized as all the 6 participants did not meet study criteria.
Participants were recruited from one center in United States of America.
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| ID | Title | Description |
|---|---|---|
| FG000 | Test Product/Comparator Product/Placebo Product | Participants in this arm received test product (0.254% weight by weight [w/w] sodium fluoride [NaF; 1150 parts per million {ppm} fluoride] and 5% potassium nitrate [KNO3]) followed by comparator (0.454% w/w stannous fluoride [SnF2; 1100 ppm fluoride]) and placebo product (5% KNO3 [0 ppm fluoride]) in Period 1, 2 and 3 respectively. Each treatment period was separated by a wash out period of minimum 3 days (including 2 day washout period using a non-fluoride toothpaste). Participants applied a full ribbon (1.5 grams [g]) of the allocated product and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth, without further brushing,for a timed period of 95 seconds. After expectorating the slurry, participants gently rinsed their mouths with 15 milliliters [mL] of tap water for 10 seconds before expectorating again. |
| FG001 | Test Product/Placebo Product/Comparator Product | Participants in this arm received test product (0.254% w/w NaF [1150 ppm fluoride] and 5% KNO3) followed by placebo (5% KNO3 [0 ppm fluoride])and comparator product (0.454% w/w SnF2[1100 ppm fluoride]) in Period 1, 2 and 3 respectively. Each treatment period was separated by a wash out period of minimum 3 days (including 2 day washout period using a non-fluoride toothpaste). Participants applied a full ribbon (1.5 g) of the allocated product and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, the participants gently rinsed their mouths with 15 mL of tap water for 10 seconds before expectorating again. |
| FG002 | Comparator Product/Test Product/Placebo Product | Participants in this arm received comparator product (0.454% w/w SnF2[1100 ppm fluoride]) followed by test (0.254% w/w NaF [1150 ppm fluoride] and 5% KNO3) and placebo product(5% KNO3 [0 ppm fluoride]) in Period 1, 2 and 3 respectively. Each treatment period was separated by a wash out period of minimum 3 days (including 2 day washout period using a non-fluoride toothpaste). Participants applied a full ribbon (1.5 g) of the allocated product and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, the participants gently rinsed their mouths with 15 mL of tap water for 10 seconds before expectorating again. |
| FG003 | Comparator Product/Placebo Product/ Test Product | Participants in this arm received comparator product (0.454% w/w SnF2[1100 ppm fluoride]) followed by placebo (5% KNO3 [0 ppm fluoride])and test product (0.254% w/w NaF [1150 ppm fluoride] and 5% KNO3) in Period 1, 2 and 3 respectively. Each treatment period was separated by a wash out period of minimum 3 days (including 2 day washout period using a non-fluoride toothpaste). Participants applied a full ribbon (1.5 g) of the allocated product and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, the participants gently rinsed their mouths with 15 mL of tap water for 10 seconds before expectorating again. |
| FG004 | Placebo Product/Test Product/Comparator Product | Participants in this arm received placebo product (5% KNO3 [0 ppm fluoride]) followed by test (0.254% w/w NaF [1150 ppm fluoride] and 5% KNO3) and comparator product (0.454% w/w SnF2 [1100 ppm fluoride]) in Period 1, 2 and 3 respectively. Each treatment period was separated by a wash out period of minimum 3 days (including 2 day washout period using a non-fluoride toothpaste). Participants applied a full ribbon (1.5 g) of the allocated product and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, the participants gently rinsed their mouths with 15 mL of tap water for 10 seconds before expectorating again. |
| FG005 | Placebo Product/Comparator Product/Test Product | Participants in this arm received placebo product (5% KNO3 [0 ppm fluoride]) followed by comparator (0.454% w/w SnF2[1100 ppm fluoride]) and test product (0.254% w/w NaF [1150 ppm fluoride] and 5% KNO3) in Period 1, 2 and 3 respectively. Each treatment period was separated by a wash out period of minimum 3 days (including 2 day washout period using a non-fluoride toothpaste). Participants applied a full ribbon (1.5 g) of the allocated product and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, the participants gently rinsed their mouths with 15 mL of tap water for 10 seconds before expectorating again. |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Treatment Period 1 |
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| Treament Period 1: Wash Out Period |
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| Treament Period 2 |
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| Treament Period 2: Wash Out Period |
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| Treament Period 3 |
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Safety Population included all randomized participants who received at least 1 dose of study treatment. This population was based on the treatment the participant actually received.
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| ID | Title | Description |
|---|---|---|
| BG000 | Overall Participants | All randomized participants were included for baseline evaluation. Participants applied a full ribbon of the test (0.254% w/w NaF [1150 ppm fluoride] and 5% KNO3), comparator (0.454% w/w SnF2[1100 ppm fluoride]) and placebo product (5% KNO3 [0 ppm fluoride]) and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, participants gently rinsed with 15 mL of tap water for 10 seconds before expectorating again. |
| Units | Counts |
|---|---|
| Participants |
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| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Continuous | Mean |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | % Surface Micro Hardness Recovery (SMHR; Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to a Fluoride Free Placebo Dentifrice to Enhance Remineralization of Enamel) | The %SMHR was calculated to assess the changes in mineralization status of enamel specimens. The mean indent length (micrometer) from five Knoop microindentations within each specimen was measured at baseline (B), after the first erosive challenge (E1), and after 2 and 4 hours intraoral phase (R). An increase in the indentation length compared to the baseline indicates softening of the enamel surface while decrease in the indentation length represents re-hardening of enamel surface. The %SMHR was calculated as : %SMHR = [(E1-R)/(E1-B)]*100. Greater values of %SMHR indicate that greater remineralization has occurred, thus higher values are more favorable. | The Intent-to-Treat (ITT) population was comprised of all randomized participants who received at least 1 dose of study treatment and had at least 1 post-baseline (post-treatment) primary efficacy evaluation. This population was based on the treatment to which the participant was randomized. | Posted | Least Squares Mean | Standard Error | Percentage SMHR | After 4 hrs following single exposure of treatment |
4 hours
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Test Product | Participants applied a full ribbon of the test product (1.5 g) containing 0.254% w/w NaF (1150 ppm fluoride) and 5% KNO3 and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth for 95 timed seconds. After expectorating the slurry, participants gently rinsed their mouth with 15 mL of tap water for 10 seconds before expectorating again. |
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| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| Dental caries | Gastrointestinal disorders | Systematic Assessment |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| GSK Response Center | GlaxoSmithKline | 866-435-7343 Ext: | GSKClinicalSupportHD@gsk.com |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot | Yes | No | No | Study Protocol | Nov 7, 2017 | Jan 3, 2019 | Prot_000.pdf |
| SAP | No | Yes | No | Statistical Analysis Plan | Feb 27, 2018 | Jan 3, 2019 | SAP_001.pdf |
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| ID | Term |
|---|---|
| D014077 | Tooth Erosion |
| ID | Term |
|---|---|
| D017001 | Tooth Demineralization |
| D014076 | Tooth Diseases |
| D009057 | Stomatognathic Diseases |
| D057085 | Tooth Wear |
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Laboratory sample analyst will be blinded to treatment received. All study products will be overwrapped to conceal any labelling.
The dispensing staff will not be involved in any clinical assessments or laboratory analysis during the study. Dental examiner will also be blinded to the treatment received.
|
| 0.454% w/w stannous fluoride | Drug | Dentifrice containing 0.454% w/w stannous fluoride (1100 ppm fluoride). Participants will brush it on the buccal surfaces of their natural teeth for 25 timed seconds and then swish the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, the participants will gently rinse their mouths with 15 mL of tap water for 10 seconds before expectorating again. |
|
| 5% KNO3 | Drug | Fluoride free placebo dentifrice containing 5% KNO3 (0 ppm fluoride), 0.25% PVM/MA copolymer and 2.5% lactate. Participants will brush it on the buccal surfaces of their natural teeth for 25 timed seconds and then swish the resulting toothpaste slurry around the mouth, without further brushing, for a timed period of 95 seconds. After expectorating the slurry, the participants will gently rinse their mouths with 15 mL of tap water for 10 seconds before expectorating again. |
|
| After 4 hrs following single exposure of treatment |
| Enamel Fluoride Uptake (EFU; Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to a Fluoride Free Placebo Dentifrice to Promote Fluoride Uptake in Enamel) | The EFU was measured to determine the amount of fluoride incorporation into the model erosive lesions. Each enamel specimen drilled to a depth of approximately 100 μm using a microdrill, through the entire lesion (four cores per specimen). The enamel powder pooled from four drilling samples was then, dissolved in a known volume of perchloric acid and immediately analyzed for fluoride content using a calibrated fluoride specific electrode. The amount of fluoride-uptake by enamel was calculated based on the amount of fluoride divided by the area of the enamel cores and expressed as microgram fluoride per square centimeter (μgF/cm^2). Higher values of EFU indicate greater incorporation of fluoride into the enamel and are thus more favorable. | After 4 hrs following single exposure of treatment |
| % SMHR (Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to Comparator Containing 1100 Ppm Fluoride) | The %SMHR was calculated to assess the changes in mineralization status of enamel specimens. The mean indent length (micrometer) from five Knoop microindentations within each specimen was measured at baseline (B), after the first erosive challenge (E1), and after 2 and 4 hours intraoral phase (R). An increase in the indentation length compared to the baseline indicates softening of the enamel surface while decrease in the indentation length represents re-hardening of enamel surface. The %SMHR was calculated as: %SMHR = [(E1-R)/(E1-B)]*100. Greater values of %SMHR indicate that greater remineralization has occurred, thus higher values are more favorable. | After 4 hrs following single exposure of treatment |
| % RER (Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to Comparator Containing 1100 Ppm Fluoride) | The %RER was calculated to assess the ability of treated enamel specimens to provide a combined benefit in terms of enhanced remineralization and acid resistance of the enamel. The mean indent length (micrometer) from five Knoop microindentations within each specimen was measured at baseline (B), after the first erosive challenge (E1), and after the second erosive challenge (E2) (E2 is measured for after both 2 and 4 hours of remineralization). An increase in the indentation length compared to the baseline indicates softening of the enamel surface while decrease in the indentation length represents re-hardening of enamel surface. The %RER was calculated as : %RER = [(E1-E2)/ (E1-B)]*100. Higher values of %RER indicate greater resistance to erosion, thus higher values are more favorable. | After 4 hrs following single exposure of treatment |
| EFU (Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to Comparator Containing 1100 Ppm Fluoride) | The EFU was measured to determine the amount of fluoride incorporation into the model erosive lesions. Each enamel specimen drilled to a depth of approximately 100 μm using a microdrill, through the entire lesion (four cores per specimen). The enamel powder pooled from four drilling samples was then, dissolved in a known volume of perchloric acid and immediately analyzed for fluoride content using a calibrated fluoride specific electrode. The amount of fluoride-uptake by enamel was calculated based on the amount of fluoride divided by the area of the enamel cores and expressed as microgram fluoride per square centimeter (μgF/cm^2). Higher values of EFU indicate greater incorporation of fluoride into the enamel and are thus more favorable. | After 4 hrs following single exposure of treatment |
| Related Info | View source |
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| Sex: Female, Male | Count of Participants | Participants |
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| ID | Title | Description |
|---|---|---|
| OG000 | Test Product | Participants applied a full ribbon of the test product (1.5 g) containing 0.254% w/w NaF (1150 ppm fluoride) and 5% KNO3 and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth for 95 timed seconds. After expectorating the slurry, participants gently rinsed their mouth with 15 mL of tap water for 10 seconds before expectorating again. |
| OG001 | Placebo Product | Participants applied a full ribbon of the placebo (1.5 g) containing 5% KNO3 (0 ppm fluoride) and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth for 95 timed seconds. After expectorating the slurry, participants gently rinsed their mouth with 15 mL of tap water for 10 seconds before expectorating again. |
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| Secondary | % Relative Erosion Resistance (RER; Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to a Fluoride Free Placebo Dentifrice to Inhibit Demineralization of Enamel) | The %RER was calculated to assess the ability of treated enamel specimens to provide a combined benefit in terms of enhanced remineralization and acid resistance of the enamel. The mean indent length (micrometer) from five Knoop microindentations within each specimen was measured at baseline (B), after the first erosive challenge (E1), and after the second erosive challenge (E2) (E2 is measured for after both 2 and 4 hours of remineralization). An increase in the indentation length compared to the baseline indicates softening of the enamel surface while decrease in the indentation length represents re-hardening of enamel surface. The %RER was calculated as : %RER = [(E1-E2)/ (E1-B)]*100. Higher values of %RER indicate greater resistance to erosion, thus higher values are more favorable. | The ITT population was comprised of all randomized participants who received at least 1 dose of study treatment and had at least 1 post-baseline (post-treatment) primary efficacy evaluation. This population was based on the treatment to which the participant was randomized. | Posted | Least Squares Mean | Standard Error | Percentage RER | After 4 hrs following single exposure of treatment |
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| Secondary | Enamel Fluoride Uptake (EFU; Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to a Fluoride Free Placebo Dentifrice to Promote Fluoride Uptake in Enamel) | The EFU was measured to determine the amount of fluoride incorporation into the model erosive lesions. Each enamel specimen drilled to a depth of approximately 100 μm using a microdrill, through the entire lesion (four cores per specimen). The enamel powder pooled from four drilling samples was then, dissolved in a known volume of perchloric acid and immediately analyzed for fluoride content using a calibrated fluoride specific electrode. The amount of fluoride-uptake by enamel was calculated based on the amount of fluoride divided by the area of the enamel cores and expressed as microgram fluoride per square centimeter (μgF/cm^2). Higher values of EFU indicate greater incorporation of fluoride into the enamel and are thus more favorable. | The ITT population was comprised of all randomized participants who received at least 1 dose of study treatment and had at least 1 post-baseline (post-treatment) primary efficacy evaluation. This population was based on the treatment to which the participant was randomized. | Posted | Least Squares Mean | Standard Error | Microgram fluoride per square centimeter | After 4 hrs following single exposure of treatment |
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| Secondary | % SMHR (Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to Comparator Containing 1100 Ppm Fluoride) | The %SMHR was calculated to assess the changes in mineralization status of enamel specimens. The mean indent length (micrometer) from five Knoop microindentations within each specimen was measured at baseline (B), after the first erosive challenge (E1), and after 2 and 4 hours intraoral phase (R). An increase in the indentation length compared to the baseline indicates softening of the enamel surface while decrease in the indentation length represents re-hardening of enamel surface. The %SMHR was calculated as: %SMHR = [(E1-R)/(E1-B)]*100. Greater values of %SMHR indicate that greater remineralization has occurred, thus higher values are more favorable. | The ITT population was comprised of all randomized participants who received at least 1 dose of study treatment and had at least 1 post-baseline (post-treatment) primary efficacy evaluation. This population was based on the treatment to which the participant was randomized. | Posted | Least Squares Mean | Standard Error | Percentage SMHR | After 4 hrs following single exposure of treatment |
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| Secondary | % RER (Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to Comparator Containing 1100 Ppm Fluoride) | The %RER was calculated to assess the ability of treated enamel specimens to provide a combined benefit in terms of enhanced remineralization and acid resistance of the enamel. The mean indent length (micrometer) from five Knoop microindentations within each specimen was measured at baseline (B), after the first erosive challenge (E1), and after the second erosive challenge (E2) (E2 is measured for after both 2 and 4 hours of remineralization). An increase in the indentation length compared to the baseline indicates softening of the enamel surface while decrease in the indentation length represents re-hardening of enamel surface. The %RER was calculated as : %RER = [(E1-E2)/ (E1-B)]*100. Higher values of %RER indicate greater resistance to erosion, thus higher values are more favorable. | The ITT population was comprised of all randomized participants who received at least 1 dose of study treatment and had at least 1 post-baseline (post-treatment) primary efficacy evaluation. This population was based on the treatment to which the participant was randomized. | Posted | Least Squares Mean | Standard Error | Percentage RER | After 4 hrs following single exposure of treatment |
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| Secondary | EFU (Comparison of 1150 Ppm Fluoride and 5% KNO3 Dentifrice Relative to Comparator Containing 1100 Ppm Fluoride) | The EFU was measured to determine the amount of fluoride incorporation into the model erosive lesions. Each enamel specimen drilled to a depth of approximately 100 μm using a microdrill, through the entire lesion (four cores per specimen). The enamel powder pooled from four drilling samples was then, dissolved in a known volume of perchloric acid and immediately analyzed for fluoride content using a calibrated fluoride specific electrode. The amount of fluoride-uptake by enamel was calculated based on the amount of fluoride divided by the area of the enamel cores and expressed as microgram fluoride per square centimeter (μgF/cm^2). Higher values of EFU indicate greater incorporation of fluoride into the enamel and are thus more favorable. | The ITT population was comprised of all randomized participants who received at least 1 dose of study treatment and had at least 1 post-baseline (post-treatment) primary efficacy evaluation. This population was based on the treatment to which the participant was randomized. | Posted | Least Squares Mean | Standard Error | Microgram fluoride per square centimeter | After 4 hrs following single exposure of treatment |
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| 0 |
| 62 |
| 0 |
| 62 |
| 8 |
| 62 |
| EG001 | Comparator Product | Participants applied a full ribbon of the placebo (1.5 g) containing 0.454% w/w SnF2 (1100 ppm fluoride) and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth for 95 timed seconds. After expectorating the slurry, participants gently rinsed their mouth with 15 mL of tap water for 10 seconds before expectorating again. | 0 | 62 | 0 | 62 | 6 | 62 |
| EG002 | Placebo Product | Participants applied a full ribbon of the placebo (1.5 g) containing 5% KNO3 (0 ppm fluoride) and brushed the buccal surfaces of their natural teeth for 25 timed seconds and then swished the resulting toothpaste slurry around the mouth for 95 timed seconds. After expectorating the slurry, participants gently rinsed their mouth with 15 mL of tap water for 10 seconds before expectorating again. | 0 | 62 | 0 | 62 | 10 | 62 |
| Lip haematoma | Gastrointestinal disorders | Systematic Assessment |
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| Mouth ulceration | Gastrointestinal disorders | Systematic Assessment |
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| Oral Discomfort | Gastrointestinal disorders | Systematic Assessment |
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| Oral Mucosal Erthyema | Gastrointestinal disorders | Systematic Assessment |
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| Oral Pain | Gastrointestinal disorders | Systematic Assessment |
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| Toothache | Gastrointestinal disorders | Systematic Assessment |
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| Bronchitis | Infections and infestations | Systematic Assessment |
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| Gastrointestinal Bactetial Overgrowth | Infections and infestations | Systematic Assessment |
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| Herpes Zoster | Infections and infestations | Systematic Assessment |
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| Nasopharyngitis | Infections and infestations | Systematic Assessment |
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| Sinusistis | Infections and infestations | Systematic Assessment |
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| Urinary Tract Infection | Infections and infestations | Systematic Assessment |
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| Arthopod Bite | Injury, poisoning and procedural complications | Systematic Assessment |
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| Burn Oral Cavity | Injury, poisoning and procedural complications | Systematic Assessment |
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| Contusion | Injury, poisoning and procedural complications | Systematic Assessment |
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| Joint Dislocation | Injury, poisoning and procedural complications | Systematic Assessment |
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| Palate Injury | Injury, poisoning and procedural complications | Systematic Assessment |
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| Tooth Fracture | Injury, poisoning and procedural complications | Systematic Assessment |
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| Traumatic Ulcer | Injury, poisoning and procedural complications | Systematic Assessment |
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| Periodic limb movement disorder | Nervous system disorders | Systematic Assessment |
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| Mouth Injury | Injury, poisoning and procedural complications | Systematic Assessment |
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Not provided