Dentists no longer use Novocain when treating patients. No, this doesn’t mean we’ve somehow managed to make dentistry completely painless (we wish!). We mean that Novocain is no longer the anesthetic of choice for dentists. In fact, it hasn’t been for many years.
Novocain is actually a brand name for procaine. It was first created in 1905 and started being used in dentistry soon after. Believe it or not, before that, cocaine was the anesthetic of choice for procedures! Novocain was more effective and didn’t have addictive side effects, so it won out as the anesthetic of choice for many decades.
However, there was a serious side effect that caused dentists to start moving away from using Novocain. Many patients can have allergic reactions, sometimes severe, to the chemical that results as Novocain is processed by the body. By the 1980s, barely any dentists were using Novocain anymore. For the past 30 years or so, lidocaine has been the local anesthetic that most dentists use. Lidocaine was invented in 1943 and is sometimes called xylocaine or lignocaine. There are few other local anesthetics that dentists may choose based on slight variations in their effect, such as being longer-lasting.
Lidocain the same way that Novocain does: it’s a nerve blocker. When lidocaine enters nerve cells, it prevents them from sending pain messages to each other, therefore the feeling of pain can never reach your brain. Think of it as an email spam blocker. The spam keeps being sent, but it never reaches your inbox so you never see it or experience it.
Local anesthetics like lidocaine are usually used in restorative dental procedures, such as crowns or root canals. They are also used in combination with nitrous oxide (laughing gas) or general anesthesia in more complex procedures such as surgical extractions and placing dental implants.
So if Novocain hasn’t been used by dentists in a long time, why do patients under 30 still know what it is and ask about it? Our best guess is that patients have heard about it from their parents, grandparents, or TV and movies. If you’re curious about the local anesthetic and how we might use it in your treatment, please feel free to ask!
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