1. Dr Wajiha Qamar

3.  Joint of Jaw
 2 TMJ’s working in union
 Formed by
Mandibular fossa and articular Tubercle
of temporal bone
Condyl of mandible

4.  GinglymoArthroidal joint
 Condyl articulates with temporal bone in
the mandibular fossa
 Synovial joint enclosing synovial fluid
 Develops in 12th week of intra uterine life

5.  Mandibular condyls
 Articular surfaces of Temporal bone
 Capsule
 Articular disc
 Ligaments

8.  Fibrous membrane that surrounds the
joint
 Covers the joint from all around
 Thin above the disc and thick below it

9.  Fibro cartilaginous tissues
 Disc divides the compartment into 2
 Upper formed by Temporal bone and
articular disc (Menisco temporal)
 Lower formed by mandible and articular
disc(Menisco mandibular)

11.  Major Ligament
 Temporomandibular ligament
 Capsular ligament
 Minor Ligaments
 Stylo mandibular ligament
 Spheno mandibular ligament

12.  Other Ligaments
Oto mandibular ligament
Disco malleolar ligament
Mallelo mandibular ligament

14.  Messeter
 Temporalis
 Medial pterygoid
 Lateral pterygoid

17.  SENSORY
Auriculo temporal nerve
Messeteric nerve
 MOTOR
Mandibular division of trigeminal nerve

18.  Branches of External Carotid Artery
Superficial temporal artery
Deep auricular artery
Anterior tympanic artery
Ascending pharyngeal artery
Maxillary artery

19.  The Blood supply to TMJ is only
Superficial, i.e there is no blood supply
inside the capsule
 TMJ takes its nourishment from Synovial
fluid

20.  4 RECEPTORS
 Ruffini receptors
Pacinion receptors
Golgi tendon organs
Free nerve endings

21.  Ruffini Endings
Position the mandible
 Pacinion Receptors
Accelerate movement during Reflexes
 Golgi tendon Organs
Protection of ligaments Around TMJ
 Free Nerve Endings
Pain receptors

22.  Anteriorly
 Mandibular notch
 Messeteric nerve and artery
 Posteriorly
 Tympanic plate
 Glenoid process of parotid gland
 Laterally
 Parotidgland
 Skin and fascia
 Medially
 Maxillary artery and vein

23.  Rotational movement in first 20-25mm of
mouth opening
 Translational movement after that when the
mouth is excessively opened

24. 1. Depression Of Mandible
Lateral pterygoid
Digrastric
Geniohyoid
2. Elevation of Mandible
 Temporalis
 Masseter
 Medial Pterygoids

25. 3. Protrusion of Mandible
 LateralPterygoids
 Medial Pterygoids
4. Retraction of Mandible
 Posterior fibres of Temporalis