Document Detail

Biofilm formation in vivo on perfluoro-alkylsiloxane-modified voice prostheses.
MedLine Citation:
PMID:  10604410     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To study the influence of perfluoroalkylsiloxane (PA) surface modification of silicone rubber voice prostheses on biofouling. DESIGN: Placebo-controlled clinical trial. SETTING: Tertiary referral center, with specialization in head and neck cancer treatment. PATIENTS: Eighteen consecutive patients with laryngectomies and experienced in the use of a voice prosthesis who visited the outpatient clinic for prosthesis replacement. MATERIAL: Eighteen partially surface-modified voice prostheses (3 with short-chain PAs [1 fluorocarbon unit] and 15 with long-chain PAs [8 fluorocarbon units]) were inserted via the patients' tracheoesophageal shunts and remained in place for 2 to 8 weeks. INTERVENTION: Replacement of the prostheses. MAIN OUTCOME MEASURES: Evaluation of biofilm formation on short- and long-chain PA-modified and original silicone rubber surfaces on the esophageal side of the voice prosthesis. RESULTS: The planimetrical biofilm scores of the surfaces of all 3 short-chain PA-treated voice prostheses indicated more biofouling on the treated surfaces than on the untreated surfaces of the same prostheses. For the long-chain PA-treated prostheses, the planimetrical biofilm scores, as well as the numbers of colony-forming units per cm(-2) for bacteria and yeasts, indicated less biofouling on the treated side than on the control side for 9 of the 13 prostheses that could be analyzed (2 were lost to analysis). Identical fungal strains, mainly Candida sp, were isolated from biofilms on each side of the esophageal flange. CONCLUSIONS: Chemisorption of long-chain PAs by the silicone rubber used for voice prostheses reduces biofilm formation in vivo and therefore can be expected to prolong the life of these prostheses. Chemisorption of short-chain PAs by silicone rubber seems to have an adverse effect.
E P Everaert; H F Mahieu; B van de Belt-Gritter; A J Peeters; G J Verkerke; H C van der Mei; H J Busscher
Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of otolaryngology--head & neck surgery     Volume:  125     ISSN:  0886-4470     ISO Abbreviation:  Arch. Otolaryngol. Head Neck Surg.     Publication Date:  1999 Dec 
Date Detail:
Created Date:  2000-01-05     Completed Date:  2000-01-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8603209     Medline TA:  Arch Otolaryngol Head Neck Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1329-32     Citation Subset:  AIM; IM    
Department of Biomedical Engineering, University of Groningen, The Netherlands.
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MeSH Terms
Biofilms* / growth & development
Colony Count, Microbial
Larynx, Artificial*
Silicone Elastomers
Surface Properties
Yeasts / physiology*
Reg. No./Substance:
0/Fluorocarbons; 0/Silicone Elastomers; 0/Siloxanes

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