Recent developments in temporary vocal fold (VF) augmentation materials and office-based laryngeal procedures have expanded the role of vocal fold injection (VFI). Although already performed in the laryngology community, trial VFI is yet to be defined in the literature. We sought to define trial VFI and to emphasize its concept and clinical utility through a review of our institution's experience. The study design was a retrospective review of our surgical database. All patients who received a temporary, deep VFI were identified.