August 28, 2025
When your dentist numbs your mouth, it’s a lifesaver during treatment—but you’re left wondering how long the tingling will stick around. On average, dental numbing lasts a few hours, but the exact time depends on the procedure and medication. Knowing what to expect helps you plan your day with ease.
Dental numbing uses local anaesthesia to block pain during dental treatments. It stops nerve signals in the treated area, so you may feel pressure but not pain.
Types of Numbing Agents Used
The most common agent is lidocaine, which lasts about 1–3 hours. Others, such as articaine or bupivacaine, are used for longer procedures. Dentists choose the anaesthetic based on your treatment and health history.
Dental numbing usually lasts 1–3 hours, depending on the type of anaesthetic, the procedure, and your body’s response.
Short Procedures
For small fillings, numbness usually wears off within 1–2 hours.
Longer Procedures
Extractions or root canals may require longer-acting anaesthetics, keeping you numb for 3–5 hours.
Individual Variation
Your metabolism, age, and health affect recovery. Some people regain feeling quickly, while others stay numb longer.
Type of Anaesthetic
Different anaesthetics last for different times. Lidocaine works for 1–2 hours, while articaine may last up to 3. Your dentist selects the best option for your treatment.
Location of Injection
Numbing in the lower jaw often lasts longer because the nerves are denser and harder to reach. This means sensation may return more slowly than in the upper jaw.
Dosage and Concentration
Higher doses or stronger concentrations extend numbness. Dentists adjust this based on the complexity and length of your procedure.
Patient’s Metabolism and Health
Anaesthesia wears off at different rates depending on age, weight, and health. Faster metabolism means quicker recovery, while slower processing can extend numbness.
Fillings
For small to medium fillings, numbness usually lasts 1–2 hours, with full sensation returning soon after treatment.
Tooth Extraction
Tooth extractions often use longer-lasting anaesthetics, so numbness may linger for 2–4 hours. Wisdom tooth removals can last even longer.
Root Canal Treatment
Root canals involve deeper treatment, so the numbing effect usually lasts 2–3 hours.
Wisdom Tooth Surgery
Wisdom tooth surgery often requires higher doses, so numbness may last 3–5 hours, or longer if several teeth are removed.
Tingling Sensation
As numbness fades, you may feel tingling or pins-and-needles in your lips, cheeks, or tongue. This is normal and shows your nerves are waking up.
Gradual Return of Feeling
Numbness fades gradually. Sensation returns in stages, from slight awareness to full feeling within a few hours.
Mild Discomfort
Mild soreness or sensitivity may appear once numbness fades. Over-the-counter pain relief or your dentist’s advice can help.
Avoid Chewing on the Numb Side
Chewing while numb can cause you to bite your cheek, tongue, or lip without realising it. Stick to soft foods until sensation returns.
Skip Hot Drinks
Hot tea or coffee can burn your mouth since you won’t feel the heat properly. Wait until the numbness wears off before sipping.
Protect Your Mouth
Be mindful when talking or smiling, as numb lips are easy to injure. Give your mouth time to fully recover before normal activities.
Stay Active
Light movement, like walking, boosts blood flow and helps the anaesthetic fade quicker.
Gentle Massage
If your dentist approves, gently rub the area near the injection to speed circulation.
Warm Drinks
Sipping warm (not hot) fluids can encourage sensation to return sooner.
Contact your dentist if numbness lasts longer than 5–6 hours, or if you notice swelling, sharp pain, or unusual tingling.
Dental numbing is temporary and usually fades within a few hours. Follow safety tips, and contact your dentist if it lingers too long.
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