Block & Infiltration
There are essentially 2-types of local anesthesia delivery.
1. Block- this is where a larger area is anesthetized using a single injection location. This is used many times in the lower jaw. 2. Infiltration- this is where only certain teeth are anesthetized, usually 1-3, and occurs more often in the upper jaw. There is also topical anesthesia, which is primarily used in hygiene for cleanings.