What Is the Masseter Muscle?

Masseter masseter is one of the chewing muscles. It starts from the lower edge and inner surface of the zygomatic arch and ends at the masseter trochanter and the outside of the mandibular branch. The masseter muscle, the temporal muscle, and the inner pterygoid muscle contraction can lift the mandible (closed mouth). It is innervated by the masseter muscle of the mandibular nerve. It is of great significance in chewing function.

Masseter masseter is one of the chewing muscles. It starts from the lower edge and inner surface of the zygomatic arch and ends at the masseter trochanter and the outside of the mandibular branch. The masseter muscle, the temporal muscle, and the inner pterygoid muscle contraction can lift the mandible (closed mouth). It is innervated by the masseter muscle of the mandibular nerve. It is of great significance in chewing function.

Chinese name

Masseter

Foreign name

masseter

Function

chew

Leading edge

Facial artery

Pinyin

Yao Ji

Masseter muscle anatomy summary

Subcutaneous acupoints subcutaneous tissues orbicularis oris descending orbicularis. The buccal and suborbital branches of the trigeminal nerve, the branches or branches of the facial arteries and veins.

Masseter muscle masseter disease

Oral mucosa ulcers; facial muscle spasm, facial nerve paralysis.

Masseter acupuncture

Puncture subcutaneously towards the midpoint of the labial groove.

[Press] Contained in "Red Acupuncture Therapy". The stomach is 0.5 inches below the Dicang acupoint.

Masseter influencing factors

Masseter muscles are affected by various factors such as race, gender, age, face shape, etc. Generally speaking: men are more developed than women, older people are more developed than younger people, but the determinant is chewing. Because its contraction produces a forceful shut-up movement, people who often eat hard food will have correspondingly developed hypertrophy. For example: people who eat beef jerky often and love chewing gum have more developed masseter muscles than ordinary people. If you eat hard from a young age and chew much more during puberty, then the mandible tends to overgrow under the influence of its effect, forming a square face, a Chinese character face, and other appearances of hypertrophy of the jaw angle. At the same time, because of their interaction, patients with mandibular angle hypertrophy often have masseter muscle hypertrophy.

Masseter related diseases and treatment

Bone hypertrophy of the mandible angle and masseter muscles are the main reasons for the widening of the lower part. The wide lower surface can be corrected by different plastic surgery treatments to obtain a beautiful facial contour. More conventional treatments include: mandibular angle osteotomy (MAO), mandibular angle osteotomy + masseter resection (MAO + MR), and mandibular angle osteotomy + masseter Mandibular angle osteotomy + botulinumtoxin type A injection (MAO + BI) was injected. But what kind of treatment can reduce the masseter muscle thickness most effectively has not been reported in the literature at home and abroad.

The cause of hypertrophy of the lower collar is unknown. It is more common in young people. It is mainly manifested by hypertrophy of masseter muscles on one or both sides and often accompanied by abnormal hyperostosis of the lower collar horn. The treatment is generally performed by partial massectomy and hyperostosis Resection, whether it is inside the mouth or outside the mouth, may be accompanied by complications such as infection and hematoma. When removing the masseter muscles, pay special attention to protect the facial nerve from damage, but in actual operation, the facial nerve cheek should be clearly dissected and exposed. It is not easy to support and protect the lower collar edge, and sometimes it is inevitable to damage.

In order to avoid possible complications caused by surgical resection of masseter muscles, clinicians have tried a type A botulinum injection for hypertrophy of masseter muscles, and only performed osteotomies instead of masseter muscles for some patients with osteoplasty of the lower collar horn Resection has achieved good results. The injection of botulinum can reduce the masseter muscle by half. This has been proved by animal experiments. The muscle tissue cells, muscle cells, muscle fibers and neuromuscular binding have changed. Botoxin injection has few side effects, and the side effects are mild and transient. It is mainly mild pain and swelling at the injection site, local swelling and ecchymosis, transient numbness or weakness, headache and nausea, etc., naturally in 2-8 weeks disappear.