MASSETER

• Origin

 

Zygomatic Arch and Maxilla

 

• Insertion

 

Ramus of Mandible

 

• Agonist(s)

 

- Temporalis

- Medial Pterygoid

 

• Antagonist(s)

 

- Lateral Pterygoid

 

• Function

 

Elevation and Protrusion of Mandible

 

TRIGGER POINT(S)

 

 

• Location

 

Trigger points in the masseter muscle are typically located in the muscle belly, situated on the side of the face, near the angle of the jaw.

 

These points can also be found along the muscle's fibers and insertion points on the zygomatic arch and mandible.

 

 

• Pain Referral Pattern

 

Pain from masseter trigger points often refers to the jaw, face, temple region, and occasionally to the ear.

 

It can cause headaches, facial pain, jaw stiffness, and tooth sensitivity, mimicking symptoms of temporomandibular joint (TMJ) dysfunction.

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• Potential Causes

 

• Bruxism (teeth grinding) or clenching of the jaw.

 

• Stress and tension, especially in the jaw and facial muscles.

 

• Poor dental alignment or dental issues.

 

• Trauma or injury to the head or jaw.

 

• Prolonged chewing or talking.

 

 

• Prevention Tips

 

• Practice stress-reduction techniques and manage tension in the jaw and facial muscles.

 

• Maintain good dental health and address any issues with teeth alignment or grinding.

 

• Avoid excessive chewing or jaw clenching, especially during stressful periods.

 

• Use proper posture and ergonomics to reduce strain on the head and neck muscles.

 

• Consider a nightguard or mouthguard to prevent teeth grinding during sleep.

 

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