Clinical evaluation of a new resilient denture liner. Part 1: Compliance and color evaluation
| Autor: | Anamaria, Villar, Igor J, Pesun, Mary E, Brosky, Casey, Fines, James S, Hodges, Ralph, DeLong, Juey H, Lai |
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| Rok vydání: | 2003 |
| Předmět: |
Dental Stress Analysis
Male Analysis of Variance Cross-Over Studies Time Factors Siloxanes Prosthesis Coloring Biocompatible Materials Denture Liners Middle Aged Composite Resins Hardness Materials Testing Silicone Elastomers Humans Female Organosilicon Compounds Dimethylpolysiloxanes Stress Mechanical Denture Cleansers Aged Compliance |
| Zdroj: | Journal of prosthodontics : official journal of the American College of Prosthodontists. 12(2) |
| ISSN: | 1059-941X |
| Popis: | A new experimental resilient denture liner (MPDS-SL; Lai Laboratories, Burnsville, MN) and Molloplast-B (Buffalo Dental Manufacturing, Syosset, NY) were clinically evaluated for compliance and color change over a 1-year period.In this crossover study, each of 20 patients had 2 dentures fabricated with long-term, silicone-based resilient liners, 1 denture with Molloplast-B and the other with MPDS-SL. Each denture was used for 6 months, during which time each patient kept a journal detailing his or her use and cleaning regimen. The 2 materials were assessed for compliance and color at the beginning of the study and again after 3 months and 6 months of use. Compliance was determined by applying a 3-lb force to the surface of the material following a square-wave pattern, using a closed-loop servohydraulic testing system. The force and position values were recorded using a storage oscilloscope. Compliance was measured at 3 locations on each denture and analyzed using data-acquisition software. Images of the dentures were captured using a zoom stereomicroscope with a charge-coupled video camera and image analysis software. The color was measured at 3 locations on each denture; RGB and L* a* b* were calculated.Compliance increased from baseline to 3 months and from 3 months to 6 months for almost all locations on both materials. Molloplast-B and MPDS-SL differed in average change in compliance at 6 months; the average change in compliance from baseline to 6 months was 453 (standard error, 46) for Molloplast-B and 284 (standard error, 46) for MPDS-SL (p = 0.019). For both materials, color changed significantly from baseline to 3 months and from baseline to 6 months (p0.01). MPDS-SL changed significantly less than Molloplast-B from baseline to 6 months for R (p = 0.039), G (p = 0.037), B (p = 0.005), and L* (p = 0.042).For both materials, compliance increased over 6 months of wear. The color change for MPDS-SL was considerably less significant than that for Molloplast-B. |
| Databáze: | OpenAIRE |
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