کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1101864 953579 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation of Silicone Rubber Causes Provox 2 Voice Prosthesis Malfunctioning
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی بیماری های گوش و جراحی پلاستیک صورت
پیش نمایش صفحه اول مقاله
Degradation of Silicone Rubber Causes Provox 2 Voice Prosthesis Malfunctioning
چکیده انگلیسی

SummaryObjective/HypothesisProvox 2 voice prosthesis requires periodic replacement due to biofilm proliferation which causes malfunctioning of the valve. The aim of this study was to show that Provox 2 voice prosthesis malfunctioning is due not only to valve obstruction caused by biofilm but also to the silicone variations.Design MethodsProspective study on the malfunction of Provox2 voice prostheses.MethodsThrough photographic and electron microscopic assessment, the authors studied nine Provox 2 voice prostheses, which were removed due to malfunctioning.ResultsFindings revealed that the silicone undergoes a degenerative process, thus causing the surface to become rough, deformed, swollen, and translucent. Furthermore, electron microscopy confirmed the presence of immune system cells and biofilm on the prosthesis surface and their role in creating a structural nonhomogenous structure in the silicone, which is deformed due to the presence of “crests” caused by material degeneration.ConclusionThe degenerative process of the silicone seems to be related to the oxygen present in the trachea and esophagus and to the production of oxygen-free radicals on the biofilm's part and the immune system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Voice - Volume 28, Issue 2, March 2014, Pages 250–254
نویسندگان
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