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 anaesthetic of choice for dentists. In fact, it hasn’t been for many years.
Novocain is actually a brand name for procain. It was first created in 1905 and started being used in dentistry soon after. Believe it or not, before that, cocaine was the anaesthetic of choice for procedures! Novocain was more effective and didn’t have addictive side effects, so it won out as the anaesthetic 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, lidocain has been the local anaesthetic that most dentists use. Lidocain was invented in 1943 and is sometimes called cylocain or lignocain. There are few other local anaesthetics that dentists may choose based slight variations in their effect, such as being longer lasting.
Lidocain the same way that Novocain does: it’s a nerve blocker. When lidocain 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 like an email spam blocker. The spam keeps being sent, but it never reaches your inbox so you never see it or experience it.
Local anaesthetics like lidocain 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 anaesthesia in more complex procedures such as surgical extractions and placing dental implants.
So if Novocain hasn’t been used 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 local anaesthetic and how we might use it in your treatment, please feel free to ask!