There are three main methods to restore speech after total laryngectomy: esophageal speech; artificial laryngeal speech; tracheoesophageal speech. The ideal speech rehabilitation for laryngectomized patients is based on the criteria of easy and easy to learn vocalization; fluent and easy to understand speech; and no discomfort such as misaspiration when eating, and this criterion is also the goal that doctors need to achieve. Professor Blom, a world-renowned speech-language pathologist, said: Whether a pronunciation method is successful and effective is not only that the pronunciation effect should be good, but more importantly, there is no misaspiration when eating, that is, no choking and no choking and coughing when eating. This does not affect (ensure) the quality of life of the patient. Esophageal pronunciation is also called esophageal language, which has the advantages of not having to carry and can be pronounced without hand control. Moreover, the method of training has been more mature, in line with the physiology of patients, and has certain advantages in psychological and social aspects. However, after training, some patients are still unable to pronounce successfully or have low volume of pronunciation, incoherent spitting and unclear speech. Artificial larynx includes electronic artificial larynx; pneumatic artificial larynx. They have different principles of articulation and produce different tones, pitches and volumes. Electronic artificial larynx produces mechanical sound, which is more troublesome to use and needs to be handheld. And expensive, rarely as the first choice. Pneumatic artificial larynx is cheap; easy to use; simple and easy to learn; but it needs to be hand-held and regularly cleaned and disinfected. Tracheoesophageal articulation is a popular articulation method for patients and doctors in recent years, which has clear articulation, high articulation volume, simple and easy to learn. It can be done in one stage of surgery or in two stages, and it is not limited by the surgical procedure and repair material. However, misaspiration often occurs in those without prosthesis, and it is not suitable for old and weak patients with poor lung function. Those with prostheses need to be replaced regularly and require regular cleaning. Currently popular and commonly used in the world is the one with prosthesis, which is the method of installing articulation buttons. It has a simple and easy to learn to restore vocalization; fluent and easy to understand speech; and no discomfort such as accidental aspiration when eating. There are various kinds of articulation buttons, but the principle is the same, all have one-way valve function. It allows the gas in the lungs to enter the mouth through the articulation button when speaking, and prevents the food from flowing back into the trachea when swallowing, so as to protect the patient from lung infection. There are two kinds of articulation buttons in the world, namely low-pressure type and permanent type, the latter is made of softer and more comfortable material, and it is placed for a longer time, which makes the patient more comfortable and has better articulation effect. Another popular articulation knob in the world is the Swedish Provox
It is similar to the Blom-Singer pronation knob standing type and has similar quality and efficacy. Especially for the old and weak patients with poor lung function, it is more suitable to use the method of installing articulation buttons to restore speech function and return to social life and work.