Infratemporal Fossa

Question 1

two cranial foramen in the ITF?

what passes through?

Answer 1

Foramen ovale, foramen spinosum

foramen ovale: mandibular nerve (V3 of trigeminal nerve)

Question 2

Which nerves are also affected in mandibular nerve block?

Answer 2

Inferior alveolar Lingual Buccal Auriculotemporal

Question 3

what is the major structure in the temporal fossa?

Answer 3

temporalis muscle

Question 4

What is the other clinical relevance of the infratemporal fossa?

Answer 4

Tumours Often grow without detection for a long time Advanced when diagnosed

Question 5

How does the infratemporal fossa communicate with the temporal fossa?

Answer 5

Interval between the zygomatic arch and the cranial bones

Question 6

what is a formen

Answer 6

a hole

Question 7

what forms the superior border of the ITF?

Answer 7

sphenoid bone

Question 8

where is the infratemple fossa in comparison to the temporal foss?

Answer 8

deeper/ inferier to it

Question 9

Infratemporal foss is…. to the temporal fossa

Answer 9

inferior

Question 10

What is a Fossa

Answer 10

depression

Question 11

Where is the mandibular nerve injected?

Answer 11

As it enters the infratemporal fossa

Question 12

what is the medial border of the ITF?

Answer 12

lateral pterygoid plate (part of the spheniod bone)

Question 13

Aterior border of the ITF?

Answer 13

maxilla

Question 14

posterior border of the ITF?

Answer 14

temporal bone however in front of that is the tube of fassa forming the carotid sheath (connective tissue)

Question 15

Temprol fossa is..

the anterior border is…

Bones involve…

Answer 15

superior to the zygomatic arch

the anterior of the zygomatoc bone

Temporal bone, sphenoid bone, frontal bone, zygomatic bone

Question 16

Openings of the infratemporal fossa and what goes through some of them?

Answer 16

Foramen ovale (mandibular division of fifth nerve) Foramen spinosum (middle meningeal artery) Alveolar canal Inferior orbital fissure Pterygomaxillary fissure

Question 17

floor of the ITF?

Answer 17

medial pterygoid muscles (sloping floor)

Question 18

What and where is the infratemporal fossa?

Answer 18

Irregularly shaped space Deep and inferior to zygomatic arch Deep to ramus of mandible Posterior to maxilla

Question 19

the lateral border of the ITF?

Answer 19

ramus of the mandible

Question 20

Boundaries of the infratemporal fossa?

laterally-

medially-

inferiorly-

superiorly-

Answer 20

Laterally - ramus of mandible

Medially - lateral pterygoid plate Anteriorly - posterior apsect of maxilla Posteriorly - tympanic plate, mastoid and styloid process of temporal bone

Inferiorly - where medial pterygoid muscle attaches to mandible near its angle

Superiorly - infratemporal/inferior surface of greater wing of sphenoid

Question 21

PICTURE Contents of the infratemporal fossa?

Answer 21

Inferior part of the temporalis muscle Lateral and medial pterygoid muscles Maxillary artery Pterygoid venous plexus Mandibular plus branches, inferior alveolar, lingual, buddy, and chorda tympani nerves Otic ganglion

Question 22

Which nerves can be blocked in the infratemporal fossa? Which one used in dentistry?

Answer 22

Mandibular nerve Inferior alveolar nerve - dentist

Question 23

What is anaesthetised when the inferior alveolar nerve is injected?

Answer 23

All mandibular teeth to medial side Skin and mucous membrane of lower lip