Tmj Bites Flashcards
Which tissue supply the desk with blood and innervation ?
Rettodiskal
Why patient feels pain in dislocation ?
Retrodiscal tissue stretched forward
By the time the reduction solved how ?
By process called , natural adaptation of retrodiscal tissue ( pseudodisk )
What’s happen in desk displaced with or without reduction ?
With = clicking sound
Without = limited opening
How much take to TMJ to developer?
6y.o - 20 y.o
What’s synovium tissue and fluid ?
Tissue : vascular CT line the fibrous joint capsule , continuation of periosteum extend into boundaries of articular surfaces .
Fluid : main constituent hyaluronic acid , protein mucin
Why the fibrolining of tmj is unique ?
Cause unlike hyaline cartilage due to its large collagen number it’s less distensible
Greater repairing ability
Few matrix and chondrocytes due to high collagen number
Over articular surfaces
From what the avascular disk formed ?
Collagen fibers
Cartilage like proteoglupycans
Elastic fibers
Cartilage cells ( fibrocartilage )
How desk attach to lateral an median poles of condyle ?
By ligaments of collagen and elastic fibers
Which is the thick and thin parts of disk ?
Center thin
Anterior and posterior bands thick.
Help to stabilize the condyle
Whts happen to the disk in the margin ?
Blends with fibrous capsule
In which aspects of disk the muscles attach ?
Anterior
Anterior lateral = fibers of posterior 1/3 of temporal is
Anterior medial 2/3 = fibers of superior lateral pterygoid
What’s retrodiscal tissue composition?
Loose Collagen fibers , elastic fibers branches , fat and blood , lymph vessels and nerves
Covered with synovium , superior and inferior surfaces .
Why it’s called also bilaminar ?
Due to superior and inferior lamina
