title: The effect of different chemical intra-oral prostheses cleansers on the surface properties of Parylene-coated PMMA.
abstract: The purpose of this study was to investigate the effect of different chemical intra-oral prosthesis cleansers on the surface properties of Parylene-C coated and non-coated polymethyl methacrylate (PMMA). A total of 120 PMMA samples were prepared. Half of the samples were coated with 10 µm of Parylene-C. Samples were exposed to either air (control) or one of two types of denture cleansers, an alkaline peroxide cleanser (Steradent) or a neutral peroxide cleanser with enzyme (Poligrip). Surface roughness (Ra) and surface free energy (SFE) values were measured and compared between groups. Scanning electron microscopy was used for visual analysis. The samples coated with Parylene exhibited significantly lower mean Ra values compared to the non-coated samples (p<0.001). Immersion in Steradent increased the roughness of non-coated PMMA, but its effect was minimized on the coated surfaces. SFE increased for the samples exposed to air and Poligrip, but decreased for the samples exposed to Steradent.
authors.affiliation: Prosthodontic Unit, UCL Eastman Dental Institute.
authors.forename: Coretta
authors.initials: C
authors.lastname: Fergus
authors.forename: Mariana
authors.initials: M
authors.lastname: Santos
authors.forename: Steven
authors.initials: S
authors.lastname: Soo
authors.forename: Haralampos
authors.initials: H
authors.lastname: Petridis
mesh_terms: D015921:Dental Implants; D003820:Denture Cleansers; D008422:Materials Testing; D019904:Polymethyl Methacrylate; D013499:Surface Properties
chemical_list: D015921:Dental Implants; D003820:Denture Cleansers; D019904:Polymethyl Methacrylate