The masseter muscle is one of the most powerful muscles in your body, specifically located in your jaw. It plays a crucial role in the mechanics of chewing and biting. Shaped somewhat like a rectangle, this muscle is located at the side of your face, stretching from the cheekbone down to the lower jawbone (mandible).
There are two main parts of the masseter muscle: the superficial part and the deep part. The superficial part is the larger and more visible section, which starts at the zygomatic arch (your cheekbone) and extends down to the angle of the mandible, the lower part of your jaw. This part of the muscle is primarily responsible for the clenching of your jaw. The deep part is smaller and lies underneath the superficial part, attaching more towards the rear of the mandible. It helps elevate the jaw, which is essential for powerful biting.
The masseter muscle is not only vital for chewing and talking but also has aesthetic and functional importance. For example, a well-defined masseter can contribute to a more pronounced jawline, which is often seen as a desirable physical trait. However, excessive development can lead to a bulky jaw appearance or medical issues like temporomandibular joint disorder (TMJ), which affects jaw movement.
Activating and exercising the masseter muscle can be done through various jaw exercises, and like any muscle, its strength and definition are influenced by genetics, diet, and overall health. For individuals involved in activities requiring strong jaw muscles, such as singing or playing wind instruments, maintaining the health and functionality of the masseter is particularly important. Regular check-ups with a dental or medical professional can ensure that this muscle performs optimally without leading to discomfort or other issues.