Flashcards in Lecture 33 DA Deck (9):
Why is adrenaline used in dental practice?
It is a vasoconstrictor and prevents anaesthetics from dispersing too quickly.
This also helps stop bleeding.
What happens if the dentist injects into a vein?
It will reach the heart and cause tachycardia.
What happens if the dentist injects into an artery?
That side of the face will turn white from vasoconstriction, and also numb.
What are the main nerves that concern dental practice?
Maxillary and mandibular divisions of the trigeminal nerve.
Facial nerve as well to a lesser extent.
How does the mandibular division of the trigeminal nerve enter the mandible?
The mandible is a very dense bone, and the nerve enters through the mandibular canal found posterolaterally. Hard to anaesthetise.
Is the maxillary division of the trigeminal nerve easy to anaesthetise compared to the mandibular division?
Yes, the maxilla is porous, whereas the mandible is very dense.
Where are maxilla blocks done?
At points were the maxillary division exits bone to the face.
What happens if the dentist injects too deep in a mandibular division block?
Can hit the parotid gland, which is innervated by the facial nerve. That side of the face will droop with no blinking for up to 24h.