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Singer and Blom's endoscopic technique, using a single valved silicone prosthesis, constituted a dramatic advance in speech rehabilitation following total laryngectomy. Since 1980, we have developed a silicone biflanged prosthesis that overcomes some of the inconveniences of previous prostheses. Insertion via the mouth and the oesophagus, or as a primary procedure during total laryngectomy is easily done with the use of specially developed instruments. The success rate in 36 patients in which the voice button was inserted at the time of total laryngectomy was 86.2%.
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Annyas et al. (1984) studied this question.
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