title: Effect of denture adhesive on retention of the mandibular and maxillary dentures during function.
abstract: The purpose of this study was to determine the effect of denture adhesive on retention of mandibular and maxillary dentures over a four-hour period. Denture movements were measured using an alternating magnetic field tracking device that determines the position of magnetic receiver coils relative to a transmitter coil positioned over the head. Ten adults with complete maxillary dentures and complete mandibular implant overdentures were enrolled in the study. Specially fabricated mandibular dentures contained a relief area that exposed the implant post which no longer anchored the denture, but now served as an attachment point for a receiver coil that measured mandibular movement. The denture coil was attached lateral to the post coil on a shelf cut into the denture. Mandibular denture movements were recorded as the difference between the mandible movement signal and the mandible + mandibular denture signals. Measurements of denture movements were made at baseline (no adhesive) and at 0, 2, 4 hours post-adhesive application with Fixodent cream for standardized chewing and biting. The MoveTrack signals were recorded on a digital data cassette recorder for subsequent computer analysis. The results of the measurements were analyzed using paired sample t-tests. Specifically, the following comparisons of movement means were made: mandibular vs. maxillary, baseline vs. post-baseline and successive changes (e.g., baseline vs. hour 0, hour 0 vs. hour 2, etc.). Results of these analyses showed that: 1) mandibular denture movements under both adhesive and non-adhesive conditions were significantly greater than maxillary denture movements; 2) the adhesive significantly reduced movement of the maxillary and mandibular dentures during both chewing and biting; and 3) the improvement occurred immediately post-application of the adhesive and was maintained for the four hours of follow-up.
authors.affiliation: School of Dental Medicine, University of Connecticut Health Center, Farmington, CT, USA.
authors.forename: J
authors.initials: J
authors.lastname: Grasso
authors.forename: T
authors.initials: T
authors.lastname: Gay
authors.forename: J
authors.initials: J
authors.lastname: Rendell
authors.forename: R
authors.initials: R
authors.lastname: Baker
authors.forename: S
authors.initials: S
authors.lastname: Knippenberg
authors.forename: J
authors.initials: J
authors.lastname: Finkeldey
authors.forename: X
authors.initials: X
authors.lastname: Zhou
authors.forename: J L
authors.initials: JL
authors.lastname: Winston
mesh_terms: D000269:Adhesives; D000368:Aged; D000369:Aged, 80 and over; D003764:Dental Materials; D019094:Dental Prosthesis, Implant-Supported; D003781:Denture Retention / Q000379:methods*; D003827:Denture, Complete, Upper; D003828:Denture, Overlay; D005260:Female; D006801:Humans; D008297:Male; D008334:Mandible; D008409:Mastication; D008875:Middle Aged; D011108:Polymers; D012815:Signal Processing, Computer-Assisted; D018709:Statistics, Nonparametric
chemical_list: D000269:Adhesives; D003764:Dental Materials; D011108:Polymers; C073207:maleic acid, methyl vinyl ether polymer, calcium sodium salt