TEMPORAL REGION

By: Dr. Zainab Majid

Pterion

Temporal

Parietal Frontal

Greater wing of

sphenoid

Pterygopalatine fossa Pterygopalatine fossa

Maxilla

Sphenoid

Alveolar foramen

Rotundum f.

Palatine

A. Temporal Fossa and

B. Infratemporal Fossa

Temporal Fossa

Infratemporal

Fossa

Temporal Fossa and Infratemporal Fossa

(above zygomatic arch)

(below zygomatic arch)

Floor (Medial Wall)

parietal frontal

greater wing of

sphenoid

temporal

(squamous

portion)

Anterior Wall

zygomatic bone

frontal bone

INFRATEMPORAL FOSSA

A. Temporal Fossa: Inferior Boundary of Medial Wall

infratemporal crest

lateral surface of

greater wing of sphenoid

Anterior View

of Sphenoid

temporalis fascia

temporalis muscle

Roof (Lateral Wall)

Contents

A. Temporal Fossa: Lateral Wall and Content

zygomatic arch

(inferior boundary

of lateral wall)

B. Infratemporal Fossa

roof

lateral wall

posterior

wall

postero-lateral view

lateral view

anterior wall

(not seen)

medial

wall

(not

seen)

(like a wedge of cheese, with

sharp edge pointing inferiorly)

lateral wall

ramus of mandible

Infratemporal Fossa: Lateral Wall

B. Infratemporal Fossa: Roof

Roof

roof

infratemporal crest

inferior surface of greater wing

Anterior View

of Sphenoid

inferior surface of

greater wing of

sphenoid

infratemporal

crest

Infratemporal Fossa: Roof – Inferior View

inferior view

roof

Anterior View

of Sphenoid

B. Infratemporal Fossa: Posterior Wall

posterior

wall

styloid process

(medially) posterior edge

of ramus of

mandible

(laterally)

B. Infratemporal Fossa: Anterior and Medial Walls

Anterior Wall

posterior surface of maxilla

infraorbital fissure

lateral

pterygoid

plate

spine of

sphenoid

anterior wall

medial

wall

Medial Wall

Infratemporal Fossa – Medial Wall (Posterior View)

medial

pterygoid

muscle lateral pterygoid

plate

inferior alveolar

(motor and sensory)

nerve to mylohyoid

(and anterior belly

of digastric)

Mandibular Nerve (V3)

mylohyoid

anterior belly of digastric

inferior

alveolar n.

(motor and

sensory

portion)

Mandibular Nerve (V3) – Sensory Branches

Auriculotemporal

buccal

lingual

inferior alveolar n.

(sensory portion) mental

Chorda Tympani Nerve (Br. of VII)

lingual

chorda tympani

br. of facial (VII)

chorda tympani

Chorda Tympani Branch of Facial Nerve (VII)

lingual n.

mandibular n. (V3) foramen ovale

submandibular and sublingual salivary glands

ant 2/3

tongue

maxillary

inferior alveolar

buccal

middle

meningeal

deep temporal

external

carotid

Arterial Supply of Infratemporal Fossa

maxillary

pterygoid venous

plexus

maxillary

veins

retromandibular

vein

foramen ovale

Venous Drainage of Infratemporal Fossa

superficial

temporal

vein

facial vein

TM Joint

condylar

process

head

neck

coronoid

process

mandibular

notch

articular

tubercle

mandibular

fossa

Temporomandibular Joint

Lateral

View

superior compartment

articular disk

inferior compartment capsule

Temporomandibular Joint – Lateral View of Sagittal Section)

Temporomandibular Joint – Posterior View of Coronal Section)

superior compartment

articular disk

inferior compartment

capsule

capsule

lateral (temporomandibular) ligament

sphenomandibular ligament

stylomandibular ligament

Medial View Lateral View

Temporomandiular Joint - Ligaments

(resists post. displacement)

(resists ant. displacement)

(resists ant. displacement)

lingula

spine of sphenoid

axis of rotation

(swinging hinge)

Protrusion Retrusion

Temporomandiular Joint - Movements – 1) Protrusion and Retrusion

Temporomandiular Joint – Anterior Dislocation

head and disk are inferior

to articular tubercle

head is anterior

to articular tubercle

and is elevated

articular

tubercle

protruded position

further protrusion leads to

anterior dislocation

Muscles of Mastication

Muscles of Mastication

Muscles of Mastication

Posterior View

THANKS