Study to Investigate the Effect of Changes in Dentinal Hypersensitivity on Oral Health Parameters
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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-
Cheshire
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Ellesmere Port, Cheshire, Det Forenede Kongerige, CH65 4BW
- Intertek CRS Ltd
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Demonstrates understanding of the study and willingness to participate as evidenced by voluntary written informed consent and has received a signed and dated copy of the informed consent form.
- Understands and is willing, able and likely to comply with all study procedures and restrictions.
Good general and mental health with, in the opinion of the investigator,
- No clinically significant or relevant abnormalities of medical history or oral examination which could impact study outcomes.
- The absence of any condition that would impact on the participant's safety or wellbeing or affect the individual's ability to understand and follow study procedures and requirements.
- At screening, self-reported history of DH lasting more than 6 months but not more than 10 years.
At screening, minimum of two accessible teeth (incisors, canines or pre-molars) that meet all of the following criteria:
- Tooth with signs of erosion, abrasion and/or facial/cervical gingival recession (EAR).
- Tooth with signs of sensitivity measured by qualifying evaporative (air) assessment.
At Baseline, minimum of two accessible teeth (incisors, canines or pre-molars), that meet the following criteria:
- Tooth with signs of sensitivity, measured by qualifying tactile stimulus (Yeaple less than or equal to [<=] 20 gram) and evaporative (air) assessment (Schiff Sensitivity Score greater than or equal to [>=] 2)
Exclusion Criteria:
- Women who are known to be pregnant or who are intending to become pregnant over the duration of the study.
- Women who are breast-feeding.
- Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients.
Clinical Study/Experimental Medication
- Participation in another clinical study or receipt of an investigational drug within 30 days prior to the screening visit.
- Participation in a tooth desensitizing treatment study within 8 weeks of the screening visit.
- Previous participation in this study.
- Recent history (within the last year) of alcohol or other substance abuse.
- An employee of the sponsor or the study site or members of their immediate family.
Disease
- Presence of chronic debilitating disease which, in the opinion of the investigator, could affect study outcomes.
- Any condition which, in the opinion of the investigator, is causing xerostomia.
General Dentition Exclusions
- Dental prophylaxis within 4 weeks of screening.
- Tongue or lip piercing
- Desensitizing treatment within 8 weeks of screening (professional sensitivity treatments and non-dentifrice sensitivity treatments).
- Treatment of periodontal disease (including surgery) within 12 months of screening, scaling or root planing within 3 months of screening.
- Teeth bleaching within 8 weeks of screening.
- Current active caries or periodontitis which, in the opinion of the investigator, could affect study outcomes, or the health of the subject if they participate in the study.
- Partial dentures, orthodontic appliances or dental implants which, in the opinion of the investigator, could affect study outcomes.
- Restorations in a poor state of repair which, in the opinion of the investigator, could affect study outcomes.
Specific Dentition Exclusions for Teeth Selected for Sensitivity Assessments
- Tooth with evidence of current or recent caries or reported treatment of decay in 12 months of screening.
- Tooth with exposed dentine but with deep, defective or facial restorations, teeth used as abutments for fixed or removable partial dentures, teeth with full crowns or veneers, orthodontic bands or cracked enamel. Sensitive teeth with contributing aetiologies other than erosion, abrasion or recession of exposed dentine.
- Sensitive tooth not expected, in the opinion of the investigator, to respond to treatment with an over-the-counter toothpaste.
- Use of a sensitivity oral care product within 8 weeks of screening.
- Any participants who, in the opinion of the investigator, should not participate in the study, use of medication which could interfere in the outcome of the study or require antibiotic prophylaxis for dental procedures.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Enkelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: Test Toothpaste
Participants will brush with the test toothpaste using a manual toothbrush for 1 timed minute twice daily (morning and evening) for 24 weeks.
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Marketed toothpaste containing 5 percent (%) weight by weight (w/w) NovaMin / 1426 parts per million (ppm) fluoride as sodium monofluorophosphate (SMFP)
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change From Baseline in Schiff Sensitivity Score
Tidsramme: Baseline and up to Week 24
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Evaporative (air) sensitivity will be assessed by the participant's response to an evaporative (air) stimulus administered by the clinical examiner.
Participant response will be evaluated immediately following application of the stimulus using the 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 stimulus).
A decrease in Schiff sensitivity score indicates improvement.
Change from Baseline will be calculated by subtracting Baseline score from the score at the indicated timepoints.
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Baseline and up to Week 24
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Change From Baseline in Tactile Threshold
Tidsramme: Baseline and up to Week 24
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Tactile sensitivity will be assessed by the participant's response to a tactile stimulus administered by the clinical examiner using a constant pressure probe (Yeaple probe).
After each application of the stimulus, the participant will be asked to indicate whether they experienced any pain or discomfort (yes/no response).
The pressure setting with two consecutive 'yes' responses will be recorded as the tactile threshold in gram.
An increase in tactile threshold (gram) indicates improvement.
Change from Baseline will be calculated by subtracting Baseline value from the value at the indicated timepoints.
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Baseline and up to Week 24
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Change From Baseline in Labelled Magnitude Scales (LMS) Score
Tidsramme: Baseline and up to Week 24
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The tooth sensitivity questionnaire will be used to describe the overall tooth sensitivity experienced by the participant.
Participants will indicate whether they have felt tooth sensitivity during the previous 24 hours.
Participants who indicate they did feel tooth sensitivity will complete the remainder of the questionnaire and rate the intensity, duration, tolerability and descriptive quality of their tooth sensitivity using the four individual 100 millimeter (mm) LMS.
Participants will mark each scale to indicate the best description of their sensitivity and the marked-off line segment will be measured in 'mm'.
Lower scores indicate an improvement in sensitivity.
Change from Baseline will be calculated by subtracting Baseline score from the score at the indicated timepoints.
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Baseline and up to Week 24
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change From Baseline in Turesky Plaque Index (TPI)
Tidsramme: Baseline and up to Week 24
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TPI will be used to assess plaque on all gradable teeth.
The plaque will first be disclosed using a plaque disclosing dye solution.
The TPI will be assessed on the facial and lingual surfaces of each scorable tooth.
Three scores will be recorded buccally/labially and three scores lingually/palatally.
Disclosed plaque will be scored on a scale ranging from 0-6, where 0= No plaque, 1= Slight flecks of plaque at the cervical margin of the tooth, 2= Thin continuous band of plaque (up to 1 mm) at the cervical margin of the tooth, 3= Band of plaque wider than 1 mm but covering less than (<)1/3 of the area, 4= Plaque covering at least 1/3 but less than 2/3 of the area, 5= Plaque covering 2/3 or more of the crown of the tooth.
Lower score indicates improvement in the symptoms.
Change from Baseline will be calculated by subtracting the Baseline score from the score at the indicated timepoints.
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Baseline and up to Week 24
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Change From Baseline in Modified Gingival Index [MGI]
Tidsramme: Baseline and up to Week 24
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The MGI assessment is a non-invasive evaluation which focuses on the visual symptoms of gingivitis.
It will be assessed on the facial and lingual surfaces of each scorable tooth using a 5-point scale ranging from 0 to 4, where 0= absence of inflammation 1= mild inflammation; slight change in color, little change in color; little change in texture of any portion of the marginal or papillary gingival unit.
2= mild inflammation; criteria as above but involving the entire marginal or papillary gingival unit.
3= moderate inflammation; glazing, redness, oedema, and/or hypertrophy of the marginal or papillary gingival unit.
4= severe inflammation; marked redness, oedema and/or hypertrophy of the marginal or papillary gingival unit, spontaneous bleeding, congestion, or ulceration.
Lower score indicates improvement in the symptoms.
Change from Baseline will be calculated by subtracting the Baseline score from the score at the indicated timepoints.
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Baseline and up to Week 24
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Change From Baseline in Dentine Hypersensitivity Experience Questionnaire (DHEQ) Total Score
Tidsramme: Baseline and up to Week 24
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The DHEQ is used to measure how DH affects participants quality of life.
Section 2 has 34 questions in grouped into 5 domains (Restrictions, Adaptation, Social Impact, Emotional Impact, and Identity).
Participants will score each question using a 7-point scale ranging from 1 to 7, where 1= strongly disagree, 2= disagree, 3= disagree a little, 4= neither agree nor disagree, 5= agree a little, 6= agree, and 7= strongly agree.
The total score will be derived from the sum of scores across all domains and it ranges from 34 to 238.
A lower score indicates a better quality of life regarding DH.
Change from Baseline will be calculated by subtracting the Baseline score from the score at the indicated timepoints.
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Baseline and up to Week 24
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- RH01897
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
IPD-planbeskrivelse
IPD-delingstidsramme
IPD-delingsadgangskriterier
IPD-deling Understøttende informationstype
- STUDY_PROTOCOL
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