a study to investigate a method to measure food occlusion by denture adhesives in denture wearers

Conditions: Denture Retention

Summary: the purpose of this study is to evaluate a methodology to determine the ability of a denture adhesive to restrict food ingress underneath dentures during eating.

this will be a single centre, controlled, open label, randomized, three-treatment, three-period, cross-over design in participants with full upper and full lower dentures. each treatment period will consist of one day of testing with at least two days between adjacent treatment visits. this study will consist of four visits: visit 1 - screening visit; visit 2 - treatment 1 visit; visit 3 - treatment 2 visit and visit 4 - treatment 3 visit. (participants will use test product (denture adhesive) applied to the dentures either in a pattern consistent with standard application or applied to the dentures in a pattern of continuous strips. participants will also use no adhesive as a control. participants will cross-over between treatments so that all participants will participate in all 3 treatment arms. an hour after the participant has worn their denture, they will chew a portion of peanuts in a controlled manner. the peanuts that migrate under the denture during this chewing procedure will be collected, washed, dried and weighed. participant will also answer a short questionnaire on the procedure and record the number of times their denture dislodged during the chewing procedure. the study hypothesis is that this methodology will enable comparisons between denture adhesives and no adhesive to demonstrate the effectiveness of denture adhesives at restricting food ingress under dentures during eating.

Eligibility criteria:
inclusion criteria: * evidence of a personally 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. * male or female who, at the time of screening, are between the ages of 18 and 85 years, inclusive. * willing and able to comply with scheduled visits, treatment plan, and other study procedures. * healthy, defined as in general good physical health, as judged by the investigator. * self-reports experience of getting food trapped under their denture. * is an habitual wearer of both of their dentures defined as participants who wear both of their dentures for the majority of their time whilst awake. * females of childbearing potential and at risk for pregnancy must agree to use a highly effective method of contraception throughout the study and for 1 day after the last dose of assigned treatment. * female participants who are not of childbearing potential must meet following requirements: a) achieved postmenopausal status, defined as follows: cessation of regular menses for at least 12 consecutive months with no alternative pathological or physiological cause; status may be confirmed by having a serum follicle stimulating hormone (fsh) level confirming the post-menopausal state, b) have undergone a documented hysterectomy and/or bilateral oophorectomy, and have medically confirmed ovarian failure. * have denture prostheses that fulfil all of the following: a) a qualifying conventional acrylic full denture in both the upper and lower arch, b) dentures are well fitting (kapur (olshan modification) retention and stability index sum score ≥6) (olshan, 1992) with no individual stability or retention scores \ 0 for each denture. exclusion criteria: * an investigational site staff member directly involved in the conduct of the study or their family member, site staff members otherwise supervised by the investigator, or an employee of the sponsor directly involved in the conduct of the study. * participation in any other clinical study involving investigational drugs, cosmetics or medical devices within 30 days prior to study entry and/or during study participation. * acute or chronic medical or psychiatric condition or laboratory abnormality that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the investigator, would make the participant inappropriate for entry into this study. * pregnant female participants. * breastfeeding female participants. * known or suspected intolerance or hypersensitivity to the study materials (or closely related compounds) or any of their stated ingredients. * unwilling or unable to comply with the lifestyle guidelines described in this protocol. * history of swallowing difficulties or choking. * currently taking or have taken a bisphosphonate drug (i.e., fosamax®, actonel®, boniva®) for treatment of osteoporosis. * any clinically significant or relevant oral abnormality (e.g. temporomandibular joint \[tmj\] problems) that, in the opinion of the investigator, could affect the participants participation in the study. * known allergy to peanuts or any other nut. * any condition or medication which, in the opinion of the investigator, is currently causing xerostomia. * recent history (within the last year) of alcohol or other substance abuse. * ost examination findings such as stomatitis, open sores, lesions, redness or swelling which in the opinion of the investigator, would interfere with the conduct of the study. * use of any medication that, in the opinion of the investigator, would interfere with the conduct of the study. * a serious chronic disease requiring intermittent hospital visits. * having been previously enrolled in this study. * any participant who, in the opinion of the investigator, should not participate in the study.