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The effect of polymeric denture modified in low-temperature glow discharge on human oral mucosa: Clinical case
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01.03.2018 |
Vasilieva T.
Hein A.
Vargin A.
Kudasova E.
Kochurova E.
Nekludova M.
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Clinical Plasma Medicine |
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1 |
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© 2017 Elsevier GmbH The modification hot curing poly(methyl methacrylate) (PMMA) denture base “Villacryl H Plus” in RF-discharge plasma is described The plasma chemical modification of PMMA plates in the oxygen RF-discharge (13.56 MHz) decreased the water contact angles by 1.5–2.5 times with respect to unmodified samples while their surface free energy increased up to 1.5 times due to the formation of additional oxygen containing polar chemical groups at the plasma-modified PMMA surfaces. Although the ageing effect of modified PMMA was observed, its wettability was still higher than that of the original PMMA at least after 7-day storage. The technique has been successfully applied for the modification of removable PMMA denture, which was used in clinical practice for oral orthopedic rehabilitation of a patient after the treatment of buccal mucosa cancer. When using the non-modified denture the patient complained of discomfort and food chewing problems and the hypertrophic red flat oral lichen formed at the patient's cheek. The full regression of lichen nodules and associated inflammation was observed after the usage of the plasma modified denture for one week. Within six-month ware of the plasma modified denture no pathological elements or neoplasms were found on the patients’ oral mucosa.
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