What is the term for lockjaw?

The term for lockjaw is trismus, which refers specifically to a condition characterized by a restricted ability to open the mouth fully due to muscle spasms or stiffness in the jaw. Trismus can result from various causes, including trauma, dental procedures, or infections, and is often experienced as pain when attempting to open the jaw.

Understanding trismus is particularly relevant in dental practice as it can complicate procedures and patient care. Recognizing the symptoms and causes helps dental professionals manage patients effectively, ensuring that they address any complications arising from restricted jaw movement.

The other terms listed are not related to lockjaw. Myoclonus refers to sudden, involuntary muscle spasms, spasmodic dysphonia is a voice disorder resulting from involuntary movements of the vocal cords, and aphasia is a language disorder affecting the ability to communicate. Each of these medical conditions pertains to different bodily functions or symptoms, which clearly distinguishes them from trismus.