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Anatomy- Sem 2 > Trigeminal Nerve + LA > Flashcards

Trigeminal Nerve + LA Flashcards

1
Q

What does the maxillary division of the trigeminal nerve innervate?

A
  1. Maxillary teeth
  2. Gingiva
  3. Mucosa
  4. Paranasal sinuses
  5. Nasal cavity
  6. Skin of middle 1/3 of face
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2
Q

What does the palatine branches of the maxillary divsion innervate?

A
  1. Greater + lesser palatine nerves innervate the posterior hard and soft palate
  2. Nasopalatine nerve innervates the anterior hard palate
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3
Q

Where does the posterior superior alveolar nerve arise from and what does it innervate?

A

Arise from maxillary nerve in infratemporal fossa

Innervates maxillary molars, buccal gingiva, and mucosa

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4
Q

Where does the middle superior alveolar nerve arise from and what does it innervate?

A

Arise from infraorbital nerve in the infraorbital groove

Travels through maxillary sinus to innervate the premolars, buccal gingiva, and mucosa

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5
Q

Where does the anterior superior alveolar nerve arise from and what does it innervate?

A

Arises from the infraorbital nerve in the infraorbital canal

Travels through maxillary sinus to innervate the anterior teeth, labial ginigva, and mucosa

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6
Q

What nerves are used to numb the maxillary palatal gingiva/tissue?

A

Anterior = Nasopalatine nerve

Posterior = Greater palatine nerve

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7
Q

What is the definition of an infiltration?

A

Deposition of the anaesthetic solution adjacent to the apex of a tooth which diffuses through the tituse and bone to produce anaesthesia of the tooth (1-2) and associated nerves

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8
Q

What are the two types of maxillary anterior teeth LA and when would they be used?

A
  1. Labial infiltration to anaesthetise ASA (pulp + labial tissue) = sufficient for most restorative procedures
  2. Nasopalatine nerve block to anaesthetise the nasopalatine nerve (palatal tissue) = required for extraction
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9
Q

What are the two types of maxillary premolar teeth injection and when would theye be used?

A
  1. Labial infiltration to anaesthetise MSA (pulp + buccal) = sufficient for most restorative
  2. Greater palatine nerve block (palatal) = required for exo
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10
Q

What are the two types of maxillary molar injection and when are they used?

A
  1. Labial infil to numb PSA (pulp + buccal) = sufficient for most procedures
  2. Greater palatine nerve block (palatal) = required for exo
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11
Q

Where does the mandibular division of the trigeminal nerve provide sensory?

A
  1. Mandibular teeth
  2. Gingiva
  3. Mucosa
  4. Lower lip
  5. Floor of mouth
  6. Lower 1/3 of face
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12
Q

What does the mandibular division of the trigeminal nerve provide motor?

A
  1. Muscles of mastication
  2. Anterior belly of digastric
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13
Q

Where does the anterior division of the mandibular division provide motor function?

A
  1. Lateral pterygoid
  2. Temporalis
  3. Masseter
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14
Q

The anterior division of the mandibular division has a long sensory buccal nerve. What does this provide sensory to?

A
  1. Buccal ginigva
  2. Mucosa adajcent to mandibular molars
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15
Q

The posterior division of the mandibular division is mostly sensory via two main nerves. What are they and where do they provide sensory?

A

Lingual = mucosa, gingiva of oral cavity, floor of mouth + anterior 2/3 of tongue

Inferior alveolar = mandibular premolars + molars

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16
Q

What are the other two minor nerves of the posterior division of the mandibular division?

A
  1. Mental nerve = skin of lower lip + chin
  2. Incisive nerve = mandibular canine + incisors
17
Q

How would you innervate the anterior 2/3 of the tongue?

A

General sensation from mucosa = lingual nerve

Special sensation (taste buds) = chorda tympani

18
Q

How would you innervate the posterior 1/3 of the tongue?

A

General sensation = glossopharyngeal + vagus nerve

Taste = glossopharyngeal

19
Q

What is used to innervate the mandibular teeth?

A

Posterior = IAN block

Anterior = Incisive nerve

20
Q

What is used to innervate the mandibular buccal gingiva?

A

Molars = long sensory buccal nerve

Premolars + ants = mental nerve

21
Q

What is used to innervate the mandibular lingual gingiva?

A

Lingual nerve

22
Q

What is the definition of a regional block?

A

Deposition of the anaesthetic solution around a nerve trunk to anaesthetise the tissues within the distribution of the nerve, peripheral to the site of the block

Infils only used from 5s to ants due to density of posterior mandibular bone

23
Q

What is the anatomical landmark for the Inferior Alveolar Nerve (IAN) block?

A

The pterygomandibular space

24
Q

Where is the pterygomandibular space found?

A

Lateral to the pterygomandibular raphe, and in the pterygotemporal depression formed by the deep tendon of temporalis and the medial pterygoid

Anatomy- Sem 2 (4 decks)

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