Publicidad
Surgical Anatomy in Relation  to Local Anesthesia
Surgical Anatomy in Relation  to Local Anesthesia
Surgical Anatomy in Relation  to Local Anesthesia
Surgical Anatomy in Relation  to Local Anesthesia
Publicidad
Surgical Anatomy in Relation  to Local Anesthesia
Surgical Anatomy in Relation  to Local Anesthesia
Surgical Anatomy in Relation  to Local Anesthesia
Surgical Anatomy in Relation  to Local Anesthesia
Próximo SlideShare
Innervation of teethInnervation of teeth
Cargando en ... 3
1 de 8
Publicidad

Más contenido relacionado

Publicidad

Surgical Anatomy in Relation to Local Anesthesia

  1. Surgical Anatomy in Relation to Local Anesthesia Knowledge of the anatomy of the skull, trigeminal nerve and related tissues. The fifth (V) cranial or Trigeminal nerve * Is the largest cranial nerve. * Composed of a large sensory root and a small motor root (mixed) * Divided into: 1- Ophthalmic nerve 2- Maxillary nerve 3- Mandibular nerve By Muhammed Munder Nasser
  2. * Smallest branch of the trigeminal nerve . * Leave the skull through the superior orbital fissure. * It transmit sensory innervations from eyeballs, conjunctiva, skin of the upper face and anterior scalp, the lining of the upper part of the nasal cavity and paranasal air sinuses, and the meninges of the anterior cranial fossa. * Have the following terminal branches: Nasociliary nerve, Lacrimal nerve, and Frontal nerve. Trigeminal nerve Ophthalmic N. Smallest branch of the trigeminal nerve. Leave the skull through the superior orbital fissure. Maxillary N. Intermediate in size between ophthalmic and mandibular branches. Leaves the skull through the foramen rotundum. Mandibular N. Largest branch of the trigeminal nerve. Leaves the skull through the foramen ovale. 1- Ophthalmic nerve
  3. * It is the second division of the trigeminal nerve. * It leaves the skull through the foramen rotundum. * Is purely sensory; It transmit sensory innervations from the skin of the face between the lower eyelid and the mouth, nasal cavity, sinuses, the maxillary teeth and maxilla. 2- Maxillary nerve Maxillary nerve 1) Within the cranium The middle meningeal nerve. 2) In the pterygop alatine ganglion I) Pterygopalatine nerves 1-Orbital branches. 2-Nasal branches. 3-Palatine branches. 4-Pharyngeal branches. II) Zygomatic nerves Zygomaticotemporal N. Zygomaticofacial N. III) Posterior superior alveolar nerves 3) in the infraorbital canal 1- Middle superior alveolar nerve 2- Anterior superior alveolar nerve 4) On the face: Inferior palpebral nerve, External or lateral nasal nerve, and Superior labial nerve
  4. Nasopalatine nerve Supplies the roof of the nasal cavity, nasal septum and the floor of the nasal cavity then it enters the incisive canal and passes into the oral cavity via the incisive foramen. The right and the left nasopalatine nerves emerge together through the foramen and provide sensory innervations to palatal mucosa in the region of a central incisor, lateral incisors, and canines. The Greater palatine nerve Provides sensory supply to the hard palate, it emerges on hard palate through the greater palatine foramen which is usually located about 1 cm towards the palatal midline, just distal to second molar. The nerve supplies sensory innervations to palatal soft tissue and bone up to the canine & also provide sensory innervations to some parts of soft palate. The Lesser palatine nerve Supplies sensory innervations to the soft palate tonsil and uvula. 2- Maxillary nerve
  5. Posterior superior alveolar nerves 2 -3 in number they emerge through the pterygomaxillary fissure and reach the posterior surface of the maxilla and remains external to bone, to provide sensory innervations to buccal gingiva in maxillary molar region and adjacent facial mucosal surfaces. The other branch enters maxilla and provide sensory innervations to the alveolar bone, buccal periodontal ligament and pulpal tissue of maxillary molars, with the exception of mesiobuccal root of the first molar. Middle superior alveolar nerve It originated in the infraorbital canal and run downward supplying adjacent lining of maxilla sinus, pulp of premolars and mesiobuccal root of the first molar, buccal periodontal tissues, buccal soft tissues and alveolar bone in the premolar region. Anterior superior alveolar nerve It a relatively larger branch and given off in the infraorbital canal, it provides innervations to the central and lateral incisors and canines, as well as sensory innervations to the adjacent lining of maxillary sinus, buccal periodontal tissues, buccal bone and buccal gingiva of these teeth. 2- Maxillary nerve
  6. * Largest branch of the trigeminal nerve . * It is a mixed nerve and consist of two roots, a large sensory root and a small motor root. 3- Mandibular nerve Mandibular nerve Auriculotemporal nerve Lingual nerve Long buccal nerve Inferior alveolar nerve 1- Mental nerve 2-Incisive nerve
  7. * Branches: a) Auriculotemporal nerve Supplies: - External acoustic meatus. - TMJ. - parotid facia. b) Lingual nerve which provides sensory innervations: - to the gingiva on the lingual side of the mandible from the last molar to the central incisor up to the midline. - to the mucous membrane the floor of the mouth. - to the sublingual and submandibular salivary glands. - to the mucous membrane of the anterior 2 thirds of the tongue. c) Long buccal nerve providing sensory innervations to: - The cheek. - Buccal gingiva of the mandibular molars & Buccal vestibule. 3- Mandibular nerve
  8. d) Inferior alveolar nerve: - It is the largest branch of the mandibular nerve where it enters the mandibular canal at the level of the mandibular foramen. throughout its path it is accompanied by inferior alveolar artery and inferior alveolar vein in the mandibular canal the three structures together are referred as inferior alveolar neurovascular bundle. - It supplies the inferior portion of the ramus of the mandible, entire body of the mandible, and pulps of the mandibular molars and premolars. - The nerve, artery and vein travel in the mandibular canal as far forward as mental foramen where the nerve divided into its terminal branches which are: 1- Mental nerve: which supplies the skin of the chin, skin and the mucous membrane of the lower lip, and the buccal mucosa from the incisor to the premolars. 2-Incisive nerve: which is the smaller terminal branch and the continuation of the inferior alveolar nerve within the substance of the body of the mandible anterior to the mental foramen it supplies the pulps of the anterior teeth, central and lateral incisors and canine and sometimes the first bicuspid supporting alveolar bone, periodontal ligament and the overlying soft tissue anterior to the mental foramen. 3- Mandibular nerve
Publicidad