Local anesthesia in dentistry: how it works and what to expect?

Local anesthesia temporarily reduces pain sensation in the treated area of the mouth. The patient usually remains conscious and can communicate with the dentist throughout the procedure.

How does local anesthesia work?

A local anesthetic temporarily blocks the transmission of pain signals from a specific area. It is usually injected near the treated tooth or nerve; sometimes a topical anesthetic is applied before the injection.

Depending on the treated area, the teeth, gums, lip, or tongue may become numb. Pressure or movement sensations may remain, but any pain felt must be immediately reported to the dentist.

When is it used?

Local anesthesia may be applied during filling, root canal treatment, tooth extraction, or other procedures. Whether it is needed, what type is appropriate, and the amount used are decided by the dentist based on the procedure and the patient’s health.

What is important to tell before treatment?

Inform your dentist about medications you are taking, known allergies, heart or other diseases, pregnancy, previous reactions to anesthetics, and severe anxiety. Do not change prescribed medications without consulting the prescribing doctor.

What to do after the procedure?

While numbness persists, eat and drink hot beverages carefully and protect your lip, cheek, and tongue to avoid biting or burning them. Children may require additional adult supervision. The time until sensation returns depends on the anesthetic used and individual factors.

What reactions are possible?

The injection site may be sensitive, and tingling may occur as the numbness wears off. Serious reactions are rare, but if unusual or prolonged numbness occurs after the procedure, contact the treating specialist. Sudden facial or throat swelling, wheezing, or breathing difficulties require urgent help – call 112.

How to discuss fear and comfort?

If you are worried about the injection or previous unpleasant experiences, mention this before starting. You can agree on a signal to ask to stop and inquire how anesthesia effectiveness will be checked. Treatment options depend on health and the nature of the procedure.