Citanest lasts about 30 minutes
Articaine lasts about 45-75 minutes
The practice sometimes uses Bupivacaine (Marcaine) which can last 90 minutes or longer.
Procaine (Novacaine) developed in 1905 is no longer because it could cause an allergic reaction in some patients. It was replaced in 1948 by Lidocaine. Per the internet, Lidocaine is a relatively weak anesthetic. I will have to pay more attention to numbing agents in the future.