What are the 4 main muscles of mastication?

There are four muscles: Masseter. Temporalis. Medial pterygoid.

What are the 6 muscles of mastication?

The muscles of mastication are a group of muscles that consist of the temporalis, masseter, medial pterygoid and lateral pterygoid muscles. The temporalis muscle is situated in the temporal fossa, the masseter muscle in the cheek area, while the medial and lateral pterygoids lie in the infratemporal fossa.

Which muscle of mastication can you not palpate?

lateral pterygoid muscle
Furthermore, the lateral pterygoid muscle cannot be palpated (Johnstone and Tem- pleton 1980, Bertilsson and Strom 1995), nor can a large part of the medial pterygoid muscle.

Where do you palpate the masseter muscle?

Palpate the masseter at its attachments to the zygomatic arch and angle of the mandible, the temporalis both in the temporal fossa and intraorally along the ascending ramus of the mandible, and the medial pterygoid bimanually, placing one finger externally at the medial aspect of the angle of the mandible and the other …

Is mastication a chew?

Mastication is defined as the act of chewing food (Fig. 8-2). It represents the initial stage of digestion. During mastication, the food bolus is broken down into small particles for ease of swallowing.

How do you palpate a Pterygoid muscle?

To palpate from outside the mouth, the head is tilted slightly to access the muscle. Palpation with one finger locates trigger points on the inner surface of the mandible by pressing upward at its angle. Palpation of the mid-belly is performed inside the mouth with the pad of the palpating index finger.

How do you test for lateral pterygoid muscle?

stretching of the overlying buccal mucosa. compression of the buccinators muscle. palpation of the insertion of the deep tendon of the temporal muscle on the medial surface of the coronoid process. pressure on fibres of the superficial head of the medial pterygoid.

What should I know about muscles of mastication?

1. •CONTENTS •Introduction •Anatomy of the joint •Ligaments of the joint •Articular disc •Retro discal tissue •Examination of the joint •History taking •Inspection • palpation •Examination of the muscles •Conclusion •References 2.

How is masticatory myofascial pain similar to other skeletal disorders?

Masticatory Myofascial pain- Mastication muscle pain disorders are similar to other skeletal muscle disorders in other parts of the body. It is characterized by a dull regional ache with the presence of trigger points when palpated which produces referred pain, that increases during the function.

What are the signs and symptoms of masticatory myalgia?

Masticatory myalgia- It is characterized as a dull persistent ache overlying the jaw and temple muscles with occasional reference to other structures such as head, neck, ear, and teeth. Symptoms can also include a restricted opening, fatigue, and stiffness. Signs include tenderness of the muscles with limited ROM.

Which is the best muscle for muscle palpation?

Medial Pterygoid: To complete the circle of muscle palpation, you’ll most likely end your extra-oral exam by now moving to the joints, as the medial pterygoid is much easier to palpate intraorally. The medial pterygoid muscle refers pain in front of the ear and over the joint. Be first to post a comment