Tmj And Muscles Of Mastication Flashcards
Which two bones make up the TMJ joint
Condyle and temporal
When the TMJ joint is closed explain the articulation
The condyle rests in the hollow which is calledThe glenoid fossa. The front edge is called the articular eminence
What is the fibrous tissue that prevents grating in the TMJ called
Meniscus
Subluxation
This is where the meniscus slips behind its normal position in the TMJ joint producing clicking of the jaw
Three movements of the TMJ Joint
1 Gliding movement
Meniscus and condyle slide up and down the articular eminence forward and backwards
Three movements of the TMJ joint
- Rotational movement up and down where the condyle rotate anteriorly and posteriorly over the meniscus
Three movements of the TMJ joint
Lateral movement
One joint glides alone and the other condyle rotate sideways over the meniscus giving a side to side movement
Opening of the TMJ joint
The condyle is in the joint
The condyle slides until it reaches the glenoid fossa
It moves down and forward from the clean out for her
The condyle reachThe crest of the articular eminence
When the TMJ closes what action for the incises is created
Shearing
How is chewing created
By the rotational movement of the mandible crashing food between the teeth cusps
What happens when the condyle becomes dislocated
It gets stuck in front of the articular eminent
How can a dislocated TMJ joint be treated
By pushing down on the lower molars
Which muscles open the mandibular and where did they lie
Suprahyoid muscles which lie on the floor of the mouth
Which muscles are used for closing the mouth
The muscles of mastication which one between the mandibular and cranium of the facial bones
Name some disorders of the TMJ
Muscle spasms
Degenerative changes
Pain clicking tenderness restricted movement
Bruxism – teeth grinding
