Nerve supply of head and neck /certified fixed orthodontic courses by Indian dental academy

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The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.

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0091-9248678078

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  • 1. Nerve Supply Of Head And Neck INDIAN DENTAL ACADEMY Leader in continuing dental education www.indiandentalacademy.com www.indiandentalacademy.com
  • 2. Contents • Introduction • Basics of nervous system • Cutaneous supply of head and neck • Trigeminal nerve • Cervical plexus • Motor supply to head and neck • Facial nerve • Ansa cervicalis • Spinal accessory nerve • Nerve supply of : • • • • • • • Extra ocular muscles Nasal cavity Palate Tongue Pharynx Larynx Teeth www.indiandentalacademy.com
  • 3. Introduction www.indiandentalacademy.com
  • 4. www.indiandentalacademy.com
  • 5. Neuron •Perikaryon •Dendrites •Axon •Myelin sheath •Synapse www.indiandentalacademy.com
  • 6. Neuron •Perikaryon •Dendrites •Axon •Myelin sheath •Synapse www.indiandentalacademy.com
  • 7. Nerve structures •Multipolar •Bipolar •Unipolar Classes of nerve fibres •Type A, B,C •Myelinated & Unmyelinated •Sensory & Motor www.indiandentalacademy.com
  • 8. Sensory receptors •Free nerve endings •epidermal •dermal •Meissner’s corpuscle •Merkel disc endings •Pacinian corpuscle •Ruffini terminal •Golgi tendon organ www.indiandentalacademy.com
  • 9. www.indiandentalacademy.com
  • 10. Nerve supply of head and neck www.indiandentalacademy.com
  • 11. www.indiandentalacademy.com
  • 12. www.indiandentalacademy.com
  • 13. CUTANEOUS SUPPLY OF HEAD AND NECK www.indiandentalacademy.com
  • 14. Cutaneous supply of : Head – Trigeminal nerve Neck – Cervical plexus www.indiandentalacademy.com
  • 15. Trigeminal nerve www.indiandentalacademy.com
  • 16. Branches www.indiandentalacademy.com
  • 17. Trigeminal nuclei •Mesencephalic nucleus •Principal sensory nucleus •Nucleus of spinal tract •Motor nucleus www.indiandentalacademy.com
  • 18. Functional components www.indiandentalacademy.com
  • 19. Distribution •Branches •Relation with ganglions www.indiandentalacademy.com
  • 20. Ophthalmic nerve •Branches •Lacrimal •Frontal •Nasociliary •Ciliary ganglion www.indiandentalacademy.com
  • 21. Ophthalmic Nerve www.indiandentalacademy.com
  • 22. M a x i l l a r y www.indiandentalacademy.com N e r v e
  • 23. Branches of maxillary nerve In the cranium Meningeal In pterygopalatine fossa Ganglionic, zygomatic, post. Sup. Alveolar In the infraorbital canal Middle sup.Alv, ant. Sup. Alv On the face palpebral, nasal, sup labial www.indiandentalacademy.com
  • 24. Pterygopalatine ganglion - Orbital - Palatine - Nasal - Pharyngeal www.indiandentalacademy.com
  • 25. www.indiandentalacademy.com Mandibul ar Nerv e
  • 26. Branches of mandibualr nerve Main trunk Nervus spinosus n. To M. pterygoid Ant. trunk Buccal n. n. to masseter n. To L. pterygoid Deep temporal N. Post trunk Auriculotemporal Lingual Inf. Alveolar www.indiandentalacademy.com
  • 27. Inf dental nerve does not occupy a single canal, but is plexiform in arrangement. It is also joined, directly, or thru its plexiform branches, by rami entering the bone as parts of neurovascular bundles, derived from attached muscles such as masseter. Such ‘accessory’ dental nerves ramify particularly in a plane lateral to the molar teeth, and their common occurrence accounts for the incomplete abolition of pain by inf. dental nerve block - Carter and Keen 1971 www.indiandentalacademy.com
  • 28. The nerves which supply the incisor teeth form an elaborate plexus on the external aspect of the mandible after emerging from the mental foramen and before they re-enter the bone. - Starkie and Stewart 1931 www.indiandentalacademy.com
  • 29. Otic Ganglio n www.indiandentalacademy.com
  • 30. Submandibu lar Ganglion www.indiandentalacademy.com
  • 31. Cervical Plexus •Lesser occipital •Greater auricular •Transverse cervical •Supra clavicular www.indiandentalacademy.com
  • 32. MOTOR SUPPLY OF HEAD AND NECK www.indiandentalacademy.com
  • 33. Head: Muscle of facial expression – VII nerve Neck: Ant triangle -- supra hyoid -- infra hyoid – Ansa cervicalis SCM & trapezius – Spinal accessory Vertebral muscles – Dorsal rami of spinal n. Suboccipital -- Dorsal rami of C1 www.indiandentalacademy.com
  • 34. Facial nerve nuclei www.indiandentalacademy.com
  • 35. Functional components www.indiandentalacademy.com
  • 36. Within petrous temporal www.indiandentalacademy.com
  • 37. Branches of facial nerve Gr petrosal In facial canal At stylomastoid N. To stapedius Chorda tympani Post auricular Post belly of digastric Stylohyoid Temporal Zygomatic On the face Buccal Marginal mandibualar cervical www.indiandentalacademy.com
  • 38. Geniculate ganglion www.indiandentalacademy.com
  • 39. Facial Nerve www.indiandentalacademy.com
  • 40. Branches on the face www.indiandentalacademy.com
  • 41. Various types of branching www.indiandentalacademy.com
  • 42. Relati on with paroti d www.indiandentalacademy.com
  • 43. Branches of communicati on www.indiandentalacademy.com
  • 44. Ansa cervicalis www.indiandentalacademy.com
  • 45. The origin of the inferior root varies. Porirear and Chernikov (1965) Based on 160 dissections Cervical ventral rami 2, 3 2, 3, 4 3 alone 1, 2, 3 74% 14% 4% 2% www.indiandentalacademy.com
  • 46. Accessory nerve www.indiandentalacademy.com
  • 47. References • Gray’s anatomy; 36th edition; Williams and Warwick • Anatomy and Physiology: The unity of form and function; Kenneth S. Saladin • Clinical neuroanatomy for medical students; 4th edition; Richard S. Snell • Chaurasia’s human anatomy; 4th edition • Anatomy for surgeons volume 1: The head and neck; 3rd edition; Hollinshead • Human anatomy; Prives, Lysenkov, Bushkovich • Grants atlas of anatomy • Text book of human neuroanatomy; 6th edition; Inderbir Singh www.indiandentalacademy.com
  • 48. THANK YOU…. www.indiandentalacademy.com