Trigeminal nerve
Trigeminal nerve
►Trigeminal
►3
division :
► V1. Opthalmic
► V2. Maxillary
► V3. Mandibular
nerve
Trigeminal nerve
Trigeminal nerve
Ophthalmic Nerve V1
Ophthalmic Nerve (CN V1)
a. Lacrimal nerve
 passes to the lacrimal gland providing
secretomotor fibers
b. Frontal nerve
Divides into supratrochlear and
supraorbital nerves
C. Nasociliary nerve:
Anterior and posterior ethmoidal nerve
Ophthalmic
Blink reflex(Corneal reflex)
Maxillary Nerve V2
Maxillary nerve
►
A. Zygoticaticotemporal
B. Zygomaticofacial
C. Post. Sup. Alveolar Brs
D. Nasopalatine
E. Greater Palatine
F. Lesser Palatine
G. Mid. & Ant. Alveolar Brs
H. Infraorbital
Infraorbital Nerve Block
► For
treating wounds of
the upper lip and cheek
or, more commonly, for
repairing the maxillary
incisor teeth and the
side of the nose .
► The injection is made in
the region of the
infraorbital foramen.
Mandibular Nerve
►The
mandibular nerve [V3] is the largest of
the three divisions of the trigeminal nerve
[V].
►Unlike the ophthalmic [V1] and maxillary
[V2] nerves, which are purely sensory, the
mandibular nerve [V3] is both motor and
sensory.
►All branches of the mandibular nerve [V3]
originate in the infratemporal fossa.
►Soon
after the sensory and motor roots join,
the mandibular nerve [V3] gives rise to a
small meningeal branch and to the nerve to
medial pterygoid, and then divides into
anterior and posterior trunks
►branches from the anterior trunk are the
buccal, masseteric, and deep temporal
nerves, and the nerve to lateral pterygoid,
all of which, except the buccal nerve (which
is predominantly sensory) are motor nerves
►auriculotemporal,
lingual, and inferior
alveolar nerves, all of which, except a small
nerve (nerve to mylohyoid) that branches
from the inferior alveolar nerve, are sensory
nerves.
Inferior Alveolar nerve
Inferior alveolar nerve
►Anesthesia
of the inferior
alveolar nerve is widely
practiced by most dentists.
►The inferior alveolar nerve
passes into the mandibular
canal and runs within the
medullary cavity of the
mandible, piercing the
anterior aspect of the
mandible through the mental
foramen.
Inferior alveolar nerve block