Nerve supply of the mandible

Question 1

Nerve supplying the lower teeth + gums

Answer 1

are the inferior dental (alveolar), lingual + long buccal branches of the mandibular nerve
the mandibular division emerges from skull through foramen ovale + splits into 4 branches which carry motor + sensory components

Question 2

The mandibular nerve passes

Answer 2

down the base of the skull on the inner side of ramus of mandible, between medial + lateral pterygoid muscles + divides into above branches

Question 3

1.Inferior alveolar nerve

Answer 3

supplies sensations from all lower teeth, + from the buccal; or labial gingivae of all except the molar teeth
also supplies sensation from soft tissues of lower lip + chin + enters mandible through the mandibular foramen

Question 4

It is situated

Answer 4

at the centre of the inner surface of the ramus, its guarded on its front edge by a small bony projection called the lingula

Question 5

After entering mandibular foramen

Answer 5

the nerve passes through a canal running inside the mandible, below the apices of the teeth

Question 6

the end branch of inferior alveolar nerve

Answer 6

emerges on the outer surface of mandible through the mental foramen which is below the apices of the premolars

Question 7

from this point, it is called

Answer 7

the mental nerve + supplies buccal gum of incisors, canines, premolars, lower lip + chin

Question 8

2. Long buccal nerve

Answer 8

supplies the buccal gum of molars, it passes into the gum on outer surface of mandible, over the external oblique ridge

Question 9

3. Lingual nerve

Answer 9

supplies sensation from lingual gum of all lower teeth, passes along floor of the mouth on inner surface of the mandible, above the mylohyoid muscle. it also supplies the anterior two thirds of the tongue + floor of the mouth

Question 10

4. Motor branch

Answer 10

supplies stimulation to the muscles of mastication, to effect jaw closing + chewing movements