Question 12 of 46

No, that is incorrect. Vasoconstrictors will constrict blood vessels, thereby decreasing the blood flow to the site of injection.

The consequence of this is that absorption of the local anesthetic agent into the cardiovascular system will be slowed down. This is favorable because there will be lower anesthetic blood levels which will decrease the risk of local anesthetic toxicity.

Also, decreased blood flow at the site of administration is useful when a dental/dental hygiene procedure is anticipated to create increased bleeding.