The trigeminal nerve is the largest cranial nerve. It has both sensory and motor components. It has three major divisions - the ophthalmic, maxillary, and mandibular nerves. The ophthalmic nerve innervates the eye and parts of the forehead. The maxillary nerve travels through the pterygopalatine fossa and orbits to supply parts of the face, nasal cavity and oral cavity. The mandibular nerve divides into anterior and posterior branches to innervate muscles of mastication and relay sensory information from the lower face and teeth.
This presentation contains the detailed description about the courses, branches and supply of the Trigeminal Nerve, contains variations of maxillary nerve & Mandibular Nerve, and the detail about trigeminal Neurolgia and its managements
This presentation contains the detailed description about the courses, branches and supply of the Trigeminal Nerve, contains variations of maxillary nerve & Mandibular Nerve, and the detail about trigeminal Neurolgia and its managements
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Hi. This is Dr. Amit T. Suryawanshi. Oral & Maxillofacial surgeon from Pune, India. I am here on slideshare.com to share some of my own presentations presented at various levels in the field of OMFS. Hope this would somehow be helpful to you making your presentations. All the best.
trigeminal nerve and pathology/rotary endodontic courses by indian dental aca...Indian dental academy
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
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Hi. This is Dr. Amit T. Suryawanshi. Oral & Maxillofacial surgeon from Pune, India. I am here on slideshare.com to share some of my own presentations presented at various levels in the field of OMFS. Hope this would somehow be helpful to you making your presentations. All the best.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
Indian Dental Academy: will be one of the most relevant and exciting training center with best faculty and flexible training programs for dental professionals who wish to advance in their dental practice,Offers certified courses in Dental implants,Orthodontics,Endodontics,Cosmetic Dentistry, Prosthetic Dentistry, Periodontics and General Dentistry.
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3. Trigeminal nerve
Motor supply
Muscles of
mastication
Anterior belly of
digastric
Mylohyoid
sensory supply :
To face
Greater part of
scalp
Teeth
Oral and nasal
4. Nuclear origin
Chief Sensory nucleus
Spinal nucleus of trigeminal
Mesencephalic nucleus
Motor nucleus
Nuclei present in pons and medulla
5.
6. Functional components
GSA_for tactile sensibilities,pain and
temperature
sensation,proprioseptive from
muscles of mastication
SVE_motor supply to muscles
developing from first pharyngeal
arch mesoderm
7. Roots
Small Motor root :arises from ventral aspect of
pons medial to sensory root
Large sensory root: emerges from pons ventrally
Runs forward
Laterally
Over the apex of piteous part of temporal bone
Sensory root shows an enlargement at
here:known as trigeminal ganglion
(gasserian ganglia)
14. Trigeminal ganglion
2 in number
On both sides
Located in Meckel’s
cave at apex of piteous
temporal
Ganglion divides into 3
1. Opthalmic
2. Maxillary
23. Divisions.....
1.Opthalmic Nerve(V1)
Arises from anteromedial
part of trigeminal ganglion
Pierces dura of trigeminal
cave
Comes to lie in lateral wall of
Cavernous sinus
Below the TROCHLEAR
NERVE
Passing forward
Divides Into 3 branch
24. Ophthalmic branches
Lacrimal: runs along lateral wall of orbit
Ends in lacrimal gland
Some branches supply conjunctiva and skin of upper
eyelid
Frontal: runs between periosteum lining of orbit and
levator palpebrae superioris
Ends by dividing into Supra trochlear and supra orbital
branches
1. Supra orbital:reaches the supraorbital notch and curves
upward to supply the scalp upto lambdoid suture
25. Ophthalmic branches
Nasociliary:lies between
optic nerve and lateral
rectums , reaches the
medial wall of orbit
Ends by dividing into
anterior ethmoidal and
infratrochlear nerves
26. Opthalmic cond...
Leave the cranial cavity
through superior orbital
fissure to orbital cavity
Supplies: Eyeball,conjuctiva,
upper part of nasal cavity
Lacrimal gland,skin of
forehead,the external nose
and eyelid
Also forms afferent limb to
corneal reflex
27. 2.Maxillary Nerve (V2)
Maxillary nerve leave the skull through foramen
rotendum
To enter pterygopalatine fossa
Enters the orbit through inferior orbital fissure
Continue as Infraorbital nerve
It leaves the skull through Infraorbital foramen to
emerge on Face
So maxillary courses middle cranial fossa,
pterygopalatine fossa, orbit,and face
28. Maxillary Nerve Branches
1. Meningeal in middle cranial fossa
2. Ganglion branches in pterygopalatine fossa
3. Zygomatic nerve
4. Posterior superior alveolar nerve in pterygopalatine fossa
5. Middle superior alveolar in orbit
6. Palpebral
7. Lateral nasal
8. labial
Branches in
the face
33. Have no functional relationship with
ganglion
Leave through different branches
34.
35.
36.
37.
38.
39.
40. 3.Mandibular Nerve (V3)
Formed by the union of two roots
Formation
Sensory And motor root leave the 💀 through foramen ovale
And unites just below the foramen to form main trunk
Then enters into infratemporal fossa
Passes a short downward course Anterior _smaller
Then divides into posterior_larger
41.
42. Mandibular nerve
Branches from the main trunk:
1.Meningeal branch:
Emerging after the union of root’s
Enters the foramen spinosum
Accompanies middle meningeal arteries
Supplies the Dura of middle cranial fossa
43.
44. Nerve to medial pterygoid
Supplies muscle
Gives a branch to otic
ganglion
Fibres pass through
ganglion with out relay
And supplies tensor
tympani and tensor palatini
muscles
45.
46. Mandibular nerve Branches
Branches from the anterior
division
1.Buccal nerve
2.Nerve to masseter
3.Nerve to lateral pterigoid
4.Deep temporal nerves
47. Mandibular nerve branches
Buccal Nerve
Sensory
Passes downward and forward
Through the muscles of infra temporal
fossa
Reaches the buccinator
And supplies skin over muscle and
mucosa deep to it
48.
49. Mandibular nerve Branches
Muscular Branches
Masseteric nerve
Passess in front of neck of mandible
To reach masseter
Lateral pterygoid nerve
May be arises from anterior division or from
buccal nerve
Temporalis_ anterior, middle and posterior
Passess upward to reach undersurface of
temporalis
50.
51. Branches the position division
1.Auriculotemporal Nerve
2.Lingual Nerve
3.Inferior alveolar nerve
52. Auriculotemporal
Nerve
Arises by two roots
Which form a ring through
which middle meningeal
arteries passes upward
Runs to Infra temporal fossa
Deep to neck of mandible
Laterally behind TMJ in
relation to parotid
Runs upward into the
scalp
Supplies skin over
temple and
secretomotor to
53.
54. Lingual Nerve
Upper part runs downwards
deep to lateral pterygoid
muscle
Joined with chorda tympani
Nerve
Enters the mouth
Lies deep to mucous
membrane over medial
surface of mandible just
below the 3rd molar teeth.
Then enters side of tongue
Crosses styloglossus runs across the
lateral surface of hyoglossusThen
passes on genioglossus and divides
into number of branches
55.
56.
57. Inferior alveolar
nerve
Upper part runs deep
to lateral pterygoid
Emerges at lower
border of muscle to run
downward and
forward
Deep to ramus of
Separated from medial
pterygoid muscle by
spheno mandibular
ligament
Reaches mandibular
foramen
Into the mandibular
canal
Ends at mental foramen
58. In mandibular
canal it gives
branches to
teeth
Mylohyoid nerves
emerges just
before entry to
canal
59.
60.
61.
62.
63.
64.
65.
66.
67. Questions
1. Trigeminal nerve with its course and
divisions
2. Maxillary nerve essay
3. Mandibular nerve essay
