oral function: sensory and motor systems

Question 1

what nerve supplies the mandibular teeth and where does this nerve branch from

Answer 1

inferior alveolar (dental) nerve 
branch of the mandibular nerve which is a branch of the trigeminal nerve

Question 2

what does the inferior alveolar nerve give rise to anteriorly

Answer 2

the mental nerve which exits the mandible via the mental foramen and supplies sensory branches to the chin and lip

Question 3

ID block

Answer 3

inferior alveolar nerve block

method of LA technique

Question 4

anaesthesia

Answer 4

loss of sensation

Question 5

paraesthesia

Answer 5

abnormal sensation e.g pins and needles caused by disruption to nerve function
often occurs as effects of LA wear off

Question 6

dysaethesia

Answer 6

abnormal/ unpleasant sensation when touched caused by damage to peripheral nerves

Question 7

5 branches of facial nerve

Answer 7

think 5 fingers on side of the face 
temporal 
zygomatic 
buccal 
mandibular
cervical

Question 8

possible causes of bells palsy

Answer 8

middle ear infection, viral infection, temporary infiltration of LA to facial nerve (facial palsy as can attribute a definitive cause)

Question 9

benefits of retaining roots for dentures

Answer 9

roots and PDLs remain therefore PDL mechanoreceptors allow finer discrimination of food texture, tooth contact and levels of function loading
more precise control of mandibular movements
psychological benefit - prevents feeling of total loss of natural teeth

Question 10

periodontal mechanoreceptors function

Answer 10

assess direction of force

contribute to mastication, salivation , interdental discrimination

Question 11

dysphagia

Answer 11

difficulty swallowing

various causes including stroke, brain injury, tumours

Question 12

anosmia

Answer 12

loss of olfactory sense