Soft tissue augmentation utilizing filler material has been usedsince 1893, with the German surgeon Gustov Neuber performingthe first documented autologous fat transfer for correction of afacial defect.1 Since that time, numerous filler materials havebeen used. Today, products used in vocal fold injection includerelatively long-lasting solutions including not only autologousfat but also calcium hydroxylapatite (Radiesse), polydimethylsiloxane(particulate silicone), and shorter acting temporary materialssuch as bovine gelatin, collagen-based products,carboxymethylcellulose, hyaluronic acid (Restylane), and others.1When injecting materials into vocal folds, it is importantthat convergence of the subglottic area be maintained.
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