1. Mandible, temperomandibular joint & muscle of mastication (M.C.Qs.)By
Prof. Samir Malik
Dental students

3. M.C.Qs. The muscles attache to the both surface of the mandible are one of the following? A-5 muscles. B-6 muscles. C-7 muscles. D-9 muscles.

4. Answer: The muscles attache to the both surface of the mandible are one of the following? A-5 muscles. B-6 muscles. C-7 muscles. D-9 muscles.

5. Short account: Mention four muscles attached to the mandible &their nerve supply?

6. Answer platysma n. supply: facial nerve
Answer platysma n.supply: facial nerve. Mentalis ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Buccinator ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Temporalis Trigeminal nerve.

8. M.C.Qs. The condylar process of the mandible showing all the following are true except one sentence is wrong? A-neck. B-pterygoid fovea. C-Head D-shaft.

9. Answer The condylar process of the mandible showing all the following are true except one sentence is wrong? A-neck. B-pterygoid fovea. C-Head D-shaft.

10. Mention the nerve related to the mandible?

11. Answer : Lingual nerve Inferior alveolar nerve Nerve to mylohyoid Mental nerve. Mandibular branches of facial nerve.. Auriculotemperal nerve.

12. Two glands: submandibular& Sublingual
Two glands: submandibular& Sublingual Two muscles: platysma & anterior belly of the digastric.

13. Mention two structure above or superior to diaphragma oris & two below?

14. Answer: Above genohyoid muscle sublingual gland below; anterior belly of the digastric muscle& submandibular gland

16. The temporal fossa above zygomatic arch. A-true B-false
The temporal fossa above zygomatic arch? A-true B-false. The infratemporal fossa above the zygomatic arch? A-true B-false

17. Answer The temporal fossa above zygomatic arch. A-true B-false
Answer The temporal fossa above zygomatic arch? A-true B-false. The infratemporal fossa above the zygomatic arch? A-true B-false

19. What are the ligaments of the temperomandibular joint?

20. Answer: 1-stylomandibular ligament
Answer: 1-stylomandibular ligament. 2-Sphenomandibular ligament 3-temperomandibular ligament

22. M.C.Qs Which structure dividing the temperomandibular joint into two cavities; upper &lower? A-intrarticular disc. B-tendon. C-ligaments D-menisci.

23. Answer: Which structure dividing the temperomandibular joint into two cavities; upper &lower? A-intrarticular disc. B-tendon. C-ligaments D-menisci.

25. M.C.Qs. The mental foramen of the mandible in the extremity of the age lying near? A-alveolar process B-lower border c-near the ramus d-near the symphysis menti

26. Answer The mental foramen of the mandible in the extremity of the age lying near? A-alveolar process B-lower border c-near the ramus d-near the symphysis menti

28. M. C. Qs. The elevation of the temperomandibular joint (T. M. J
M.C.Qs. The elevation of the temperomandibular joint (T.M.J.) is done by the following muscle except one muscle doesnot charing in elevation? A-Temporalis Muscle . B-Masseter muscle . C-Medial pterygoid muscle D-Auricularis superior muscle

29. Answer: The elevation of the temperomandibular joint (T. M. J
Answer: The elevation of the temperomandibular joint (T.M.J.) is done by the following muscle except one muscle doesnot charing in elevation? A-Temporalis Muscle . B-Masseter muscle . C-Medial pterygoid muscle D-Auricularis superior muscle

30. M.C.Qs. The protrusion of the mandible is caused by one of the following ? A-lateral pterygoid muscle assisted by medial pterygoid . B- posterior belly of digastric muscle & stlyohyoid muscle. C-orbicularis oris & mentalis muscle D-mylohyoid & genohyoid

31. Answer. The protrusion of the mandible is caused by one of the following ? A-lateral pterygoid muscle assisted by medial pterygoid . B- posterior belly of digastric muscle & stlyohyoid muscle. C-orbicularis oris & mentalis muscle D-mylohyoid & genohyoid

32. M.C.Qs. The depression of the mandible is done by the following factor except one is wrong? A-Gravity. B-mylohyoid & genohyoid muscles. C-masseter muscle. D-Digastric muscle

33. Answer: The depression of the mandible is done by the following factor except one is wrong? A-Gravity. B-mylohyoid & genohyoid muscles. C-masseter muscle. D-Digastric muscle

34. retromoandibular
fossa
pterygopalatine
fossa

35. 2- Masseter :
origin inner surface &lower border of zygomatic arch.
Insertion outer surface of ramus .
Nerve supply:massetric n.(first branchial arch)

36. 1-TEMPRALIS MUSCLE
Origin temporal fossa ,fascia & inbetween 2 temporal lines
Insertion: cronoid process
Nerve supply from deep temporal nerves; 1st branchial arch.

38. 4-MEDIAL PTRYGOID
Origin:deep head inner surface of lateral (medial) ptrygopid plate
Superficial head: tuberosity of maxilla
Insertion :inner surface of angle of mandible; 1st pharyngeal arch.

40. 3-LATERAL PTRYGOID
Origin:upper head infratemporal surface of greater wing of the sphenoid bone.
lower head outer surface of lateral ptrygoid plate.
Insertion: neck of the condyle ,ptrygoid fovea & capsule of TMJ.
Nerve supply from mandibular nerve.

45. The infratemporal fossa- The mandibular nerve

46. The infratemporal fossa- The mandibular nerve

47. Mandibular Nerve Branches: From the trunk:
The largest division of the trigeminal nerve
A mixed nerve, sensory and motor root
leave through the Foramen Ovale
Below the foramen ovale, the 2 roots unite to form the trunk of the nerve
Divides into anterior & posterior divisions
The ant. is mainly motor
The post. is mainly sensory
Lesser
petrosal n.
Tensor tympani
Nervus
spinosus
Motor & sensory roots
of mandibular n
Otic ganglion
Tensor palati
Auriculotemporal n.
Lingual n.
Chorda tympani
Inferior alveolar n.
Branches:
Mylohoid nerve
From the trunk:
Nerve to medial pterygoid (motor):
supply the tensor palati and tensor tympani ms & medial pterygoid
Nervus spinosus (sensory) for meninges
Passes through Foramen spinosum into the cranial cavity
Medial pterygoid

48. Ant. Division: 3 motor branches for muscles of mastications
Deep temporal nerves (temporalis ms)
Nerve to masseter
Nerve to lateral pterygoid
one sensory branch
Buccal nerve (sensory): supplies skin over the buccinator, and mucosal lining of buccinator ms.
Deep temporal
nerves
Auriculotemporal
nerve
Inferior alveolar
nerve
Lingual
nerve
Buccal nerve

49. Posterior division: sensory branches Auriculotemporal nerve
arises by 2 roots (which embrace the middle meningeal artery) and passes backwards deep to the neck of the mandible
supplies the scalp
sensory the parotid gland and carries postganglionic parasympathetic to the parotid gland
Deep temporal
nerves
Auriculotemporal
nerve
2. Lingual nerve
Joined by the chorda tympani
Carries general sensations from the anterior 2/3 of the tongue
The chorda tympani carries taste sensations from the anterior 2/3 of the tongue and preganglionic parasympathetic fibres to the submandibular and sublingual glands
Inferior alveolar
nerve
Lingual
nerve
Buccal nerve

50. 3. Inferior alveolar nerve
Runs behind the lingual nerve to reach mandibular foramen
The inferior alveolar nerve continues through mandibular canal and divides into mental and incisive branches
The mental branch comes out of the mental foramen to supply skin of the chin
Before it passes through the mandibular foramen it gives the mylohyoid nerve (motor)
The mylohyoid nerve supplies the mylohyoid muscle and anterior belly of digastric
Inferior alveolar
nerve
Lingual nerve
Mylohoid nerve
& vessels
Mylohoid m.

51. Mandibular Nerve deep temporal (dt) auriculotemporal (at)
inferior alveolar (ia)
nerve to the mylohyoid (nmh)
lingual (l)
buccal (b)

53. The infratemporal fossa- The chorda tympani

54. Recall of relevant structures
Muscles of the masticatory apparatus
pterygoid muscles, medial and lateral
temporalis muscle
masseter muscle

55. Muscle of mastication temporalis masseter medial pterygoid &lateral pterygoid

56. Highlight
Temporalis superficial temporal vessels auricular temporal nerve N B P
Masseter parotid parotid duct
Medial ptrygoid lingual&inferior alveolar nerves
Lateral ptrygoid parts of maxillary artery

58. Highlight
The disc is avascular in the centre so ,the regenerative power is low.
The disc is composed of dense collagen fibers only in its centre but in posterior & anterior ends it contains elastic fibers
Synovial membrane has 3 types of cells :type A(fibroblast like cell) ,type B(macrophage like ) and intermediate cell.
The disc having two nodules