Numb lips after a dental appointment are a common experience. This temporary loss of feeling is a normal side effect of local anesthetics. Understanding why it happens and how to manage it can help you navigate the post-dental period with greater ease. This article provides practical advice for managing this temporary effect.
Why Your Lips Are Numb
Local anesthetics are fundamental in dentistry, working by temporarily blocking nerve signals in the treated area. These medications interfere with the sodium channels in nerve cells, which are necessary for transmitting pain signals to the brain. By inhibiting the rapid inflow of sodium, anesthetics prevent nerves from sending impulses, ensuring you do not feel pain during your procedure.
Common local anesthetics include lidocaine and articaine. Lidocaine begins working within five minutes and can numb the area for one to two hours, with effects lasting longer if combined with epinephrine. Articaine offers deep penetration and fast onset, lasting one to two and a half hours, often paired with epinephrine to extend its effect. The duration of numbness depends on the anesthetic type and amount, nerve block administered, and individual patient metabolism.
Ways to Encourage Numbness to Subside
Patience is key as the body naturally metabolizes the anesthetic, but some gentle approaches can help the numbness subside. Increasing blood flow to the area assists in the anesthetic’s dissipation. Light physical activity, such as walking, promotes overall circulation.
Applying a warm compress to the cheek, away from the treated site, can enhance blood flow to the numb region. Gentle massage of the numb lip or cheek area, if comfortable and not near the treated tooth, can also stimulate circulation. Staying hydrated supports the body’s metabolic processes in breaking down the anesthetic.
Staying Safe While Numb
Maintaining safety while your lips are numb is important to prevent accidental injury. The lack of sensation means you might not feel if you are biting your cheek, tongue, or lip, so it is crucial to avoid chewing or eating until full sensation returns. This precaution helps prevent inadvertent soft tissue damage.
You should also be cautious with hot beverages or foods, as you might not perceive their temperature, leading to potential burns. Drinking through a straw can be a safer alternative for liquids, but even then, proceed with care. Refrain from touching or picking at the numb area, as this can cause irritation or injury without you realizing it. If you must eat, choose soft foods and check for food accumulation in your mouth afterward.
When to Contact Your Dentist
While temporary numbness is normal, certain situations warrant contacting your dentist. If numbness persists beyond 24 hours, contact your dentist. Prolonged numbness could indicate nerve irritation or damage.
Contact your dentist if you experience unexpected symptoms such as severe pain, increased swelling, or signs of infection like fever or pus. Difficulty breathing or swallowing after your dental procedure are serious symptoms requiring immediate attention. Follow your dentist’s post-procedure instructions and call if you have concerns.