Oral and Dermal Tolerability Clinical Study of an Experimental Denture Wipe

This was a two phase single-center study. Phase 1 (Food removal testing), was monadic and only the wipe treatment was administered to complete upper dentures. Phase 1 participants then progressed to phase 2 (oral soft tissue [OST] and dermal assessment) which was an examiner blind parallel group, randomized and stratified (by denture type) design where both treatments (a single wipe and water control) were administered. Phase 2 participants included both fully and partially edentulous adult participants. Participants were not permitted to use any denture cleansers other than those provided and were not permitted to use denture fixatives for the duration of the study. The study comprised a Screening/Baseline visit and a 2 week Treatment Period with visits after 1 and 2 weeks use. Following screening participants who were eligible for Phase 1 were assessed for food migration adequacy. Participants consumed 30-32g (gram) of non-salted peanut halves in a controlled manner, then briefly rinsed their mouth with water and removed their upper denture. The investigator visually assessed the peanut particle migration underneath the denture on a 0-3 scale and those participants with a score greater than 0 were wiped by the participant with the experimental denture wipe. The mass of peanuts removed by the wipe and those remaining on the denture was subsequently measured. For a subset of participants (2 participants per peanut particle migration scale score), their dentures were photographed after peanut consumption both before and after use of the experimental denture wipe. Phase 1 participants then continued into Phase 2. All Phase 2 participants undertook an OST examination and a dermatological assessment of both sides of their lead hand, then randomized. The dental examiner and dermatologist were blinded to the treatment allocation. The results of these assessments served as the baseline reading. Participants were then instructed on the use of their assigned treatment with the first application undertaken and supervised at the study site. Participants were provided with a diary card to record their treatment applications and a consumer acceptability questionnaire to be completed at the time of their first at home treatment use. Participants were also provided with denture cleansing tablets for use overnight for the duration of the study in order to maintain denture hygiene. Participants returned to the study site after 7±3 and 14±3 days use of product for repeat OST and dermatological assessments.

Inclusion criteria

• Demonstrated understanding of the study procedures, restrictions and was willing to participate as evidenced by voluntary written informed consent and had received a signed and dated copy of the informed consent form.
• Understood and was willing, able and comply with all study procedures and restrictions.
• Participant was in good general and mental health with, in the opinion of the investigator or medically qualified designee - (a) no clinically significant and relevant abnormalities of medical or physical history; (b) absence of any condition that impacted on the participant's safety or well-being or affected the individual's ability to understand and follow study procedures.
• Denture Requirements, fully or partially edentulous: (a) Phase 1 eligible participants had a full upper denture and may Have a full or partial lower denture or no lower Denture; (b) Phase 2 eligible subjects will have at least one full or partial denture; (c) Dentures considered in good condition according to the investigator or dental examiner, with no damage according to assessment criteria; (d) Participants with a peanut particle migration rating greater than zero on the upper denture only for participants screened for food removal testing.
• Skin Phototype (Fitzpatrick), I to IV, according to the scale only skin phototypes I to IV are acceptable for inclusion in this study: Type I - White; very fair; freckles; typical albino skin. Always burns, never tans, Type II -White; fair. Usually burns, tans with difficulty, Type III - Beige; very common. Sometimes mild burn, gradually tans to a light brown, Type IV - Beige with a brown tint; typical Mediterranean Caucasian skin. Rarely burns, tans with ease to a moderate brown, Type V - Dark brown. Very rarely burns, tans very easily, Type VI Black - Never burns, tans very easily, deeply pigmented.

Exclusion criteria

• Women who were known to be pregnant or who were intending to become pregnant over the duration of the study.
• Women who were breast-feeding.
• Known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients. Known allergy to any nuts or peanuts. History of allergic reactions or intense feelings of discomfort to topically used products: cosmetics or drugs.
• Participation in another clinical study (including cosmetic studies) or receipt of an investigational drug within 30 days of the screening visit, except for participants who were enrolled on GSKCH study 205915 who might enrolled onto this study 7 days after their completion of 205915. Previous participation in this study.
• Recent history (within the last one year) of alcohol or other substance abuse.
• An employee of the sponsor or the study site or members of their immediate family.
• Denture adhesive users were excluded from this study.
• Participants with OST findings such as, stomatitis, open sores, lesions, redness or swelling were excluded.
• Other Conditions because of participants were excluded are as follows: History of swallowing or choking difficulties; participants unwilling to refrain from using their existing denture cleansing routine for the duration of the study; taking or have taken a bisphosphonate drug for treatment of osteoporosis; skin marks in the experimental area which may interfere with the evaluation of potential skin reactions; active skin diseases (local and/or disseminated) that may interfere with the study results; participants with immunodeficiencies, intense sunlight exposure or tanning session within 15 days before the baseline evaluation or during the study that has resulted in sunburn; body cosmetic and/or dermatological treatment until three weeks before screening or during the study; continual use of therapeutic, topical or systemic use of the following drugs: immunosuppressants, antihistamines, non-steroidal anti-inflammatory drugs and corticosteroids within two weeks before the screening for chronic conditions; oral or topical treatment with vitamin A acid and/or its derivatives within one month before start of study; vaccination within three weeks before or during the study; participants with dermographism; any condition not previously mentioned that in the investigator's opinion may impair the study evaluation.