How Long Does Dental Numbing Last?

Dental numbing is frequently used during dental procedures to ensure patients are comfortable and don’t feel any pain. However, if you’ve not had a local anaesthesia injection before, you may be nervous about what to expect.

In this blog, we’ll cover how long dental numbing lasts, factors that may affect how long it lasts, and when you should seek help if numbness has lasted longer than expected.

Although rare, prolonged numbness could be a sign of nerve damage – if this is the case, you may be eligible to claim compensation for nerve damage from a dental injection.

How long does dental numbing last?

Dental numbing typically lasts 1-3 hours. After this period, the effects of the anaesthesia start to wear off, and you’ll begin to regain sensation in the affected area. Some residual effects (like tingling or mild numbness) may linger for slightly longer, but this is not cause for concern.

Several factors can affect how long it takes for dental numbing to wear off:

• Type of anaesthetic used: Some numbing agents last slightly longer than others.
• Dosage and concentration: A higher dosage may be used for a more extended procedure, which is likely to prolong the numbing effect.
• Location in the mouth: Areas with denser bone structure may require stronger or longer-lasting anaesthesia.

Individual factors: Metabolism, age, weight, and overall health all play a part in how quickly numbing agents wear off. A young, healthy person is likely to notice the effects wearing off sooner than an older person with diagnosed health issues.

Is prolonged numbness normal?

It’s normal for residual numbness to last a little longer than 1-3 hours, especially if you’ve had an extensive or complex procedure. However, if the area still feels completely numb after 6 hours, you should contact your dentist.

When should I seek help?

Dental numbing is generally completely safe and predictable, but you should seek help from a dental professional if:

• Numbness lasts longer than 6 hours: If numbness lingers beyond the expected duration or spreads to other areas, you should get it checked out.
• Numbness is accompanied by severe pain or swelling: Unexpected pain or swelling near the injection site could be a sign of infection or another complication.

Allergic reaction symptoms: It’s rare for allergic reactions to anaesthetic to occur, but if you do experience any symptoms like difficulty breathing, rash, or swelling of the face, you should seek medical help immediately.

Could numbness that doesn’t go away be a sign of nerve damage?

In some rare cases, prolonged dental numbness could be a sign of nerve damage. Nerve damage can occur during a dental procedure when the dentist fails to administer the anaesthetic injection correctly, or if they use too much force during the procedure.

If your dentist has failed to take the proper care when carrying out a dental procedure, and this has led to nerve damage, then you may be eligible to make a dental negligence claim.

A dental negligence claim can help you get the compensation you deserve for negligent dental treatment and is designed to cover both emotional and financial damages that you may have incurred as a direct result of substandard care.

At the Dental Law Partnership, we specialise exclusively in dental negligence claims. We work on a no-win, no-fee basis, which means there’s no financial risk involved with making a claim – you won’t pay anything if your claim is unsuccessful.

Get in touch for a free, no-obligation consultation – we’ll review your case and advise you on whether you have a strong nerve damage claim.