Local Anesthesia pt. 5 Flashcards
— nerve is the largest cranial nerve
Trigeminal
Small motor
Large sensory root
Motor
Originate:
motor nucleus in pons and medulla oblongata
where it exits cranium
Foramen Ovale
Trigeminal n
Innervate
(5)
Masticatory muscle( masseter, temporalis, med/lat pterygoid)
Mylohyoid
Anterior belly of digastric
Tensor tympani
Tensor veli palatini
Sensory Root
Originate:
Petrous portion of
Temporal bone
Sensory Root
3 divisions
Ophthalmic V1:
Superior Orbital Fissure
Maxillary 2:
Foramen Rotundum
Mandibular V3:
Foramen Ovale
Opthalmic Division
Exclusively
sensory
Opthalmic Division
Supply:
Eyeball, conjunctiva, lacrimal gland,
Mucous membrane of nose and
paranasal sinuses, and skin of
forehead, eyelid, and nose
Opthalmic Division
Major branches
(3)
Nasociliary nerve
Frontal Nerve
Lacrimal Nerve
Maxillary Division V2
Purely
Sensory
Maxillary Division V2
Origins
(4)
Foramen Rotundum
Pterygopalatine Fossa
Inferior orbital fissure/canal
Infraorbital foramen
Branches for V2 (Maxillary)
(4)
Middle Meningeal Nerve
Pterygopalatine fossa
Infraorbital canal
Face (after exiting infrabortibal foramen)
Pterygopalatine fossa
(3)
Zygomatic nerve
Pterygopalatine nerve
Posterior superior alveolar nerve (PSA)
Pterygopalatine nerve (4)
Orbital
Nasal (nasopalatine)
Palatine (greater palatine nerve)
Pharyngeal
Infraorbital canal
(2)
Middle superior alveolar (MSA)
Anterior superior alveolar (ASA)
Facts about V2
MSA nerve is to be present in – % of time
28
ASA provides pulpal innervation to
(3)
Central and lateral incisors
Canine
PDL, buccal bone, mucous membrane of these teeth
3 major types of local
anesthesia
(3)
Local Infiltration
Field Block
Nerve Block