Which treatment option is used to increase vocal fold mass?

Injections are a treatment option specifically used to increase vocal fold mass, particularly in cases where there is a need to enhance the bulk of the vocal folds to improve voice quality. This can be important for individuals who have vocal fold atrophy or a bowing of the vocal folds, which can lead to voice issues such as hoarseness or weakness.

The substance used for injections, often referred to as vocal fold augmentation or phonosurgery, can include various materials like hyaluronic acid or other fillers that add volume and help in improving the vibration of the vocal folds during phonation. By increasing the mass of the vocal folds, the treatment aims to provide a richer and more robust sound, facilitating better vocal function.

The other treatment options, while relevant to voice disorders or vocal health, do not specifically address increasing vocal fold mass. Surgery may involve more extensive procedures but doesn't necessarily enhance mass in the same way targeted injections do. Voice therapy primarily focuses on improving vocal function, technique, and rehabilitation of the voice but does not involve physical alteration to the mass of the vocal folds. Therefore, injections stand out as the appropriate choice for increasing vocal fold mass directly.