Dental anesthesia makes treatment painless. Almost all dental care is done under local anesthesia, which numbs only the area being treated for one to several hours while you stay fully awake. Sedation, which relaxes anxious patients, and general anesthesia, in which the patient is asleep, are reserved for specific situations such as extensive treatment in young children or severe anxiety.
Local anesthesia: the standard for dental treatment
Local anesthesia temporarily blocks the nerves that carry pain signals from one area of the mouth. You still feel pressure, vibration and movement, but not sharp pain. It is used for fillings, root canal treatment, extractions, implants and gum treatment.
There are two main techniques:
- Infiltration: the anesthetic is placed near the tooth’s root tip. It is commonly used for upper teeth and front teeth.
- Nerve block: the anesthetic is placed near a nerve trunk to numb a larger area, typically half of the lower jaw, including the lip and tongue on that side.
What does the injection feel like?
Most patients feel a brief sting or pressure. Several things make it more comfortable:
- A numbing gel applied to the gum first
- A fine needle and slow injection
- Gently moving the cheek during the injection
- Breathing calmly and letting the dentist know if you need a pause
Once the anesthetic works, usually within a few minutes, treatment can start. If you still feel sharp pain, say so: a top-up can be given. Our articles on whether dental implants are painful and whether root canal treatment is painful describe what patients feel in practice.
How long does numbness last?
The tooth itself is usually numb for about one to two hours, while the lip, cheek or tongue can remain numb for two to five hours, especially after a lower-jaw block. Until feeling returns:
- Avoid hot drinks, to prevent burns.
- Avoid chewing, to avoid biting your lip, cheek or tongue.
- Watch children closely, as they often chew or play with a numb lip.
Is local anesthesia safe?
Local anesthetics used in dentistry are very safe and have been used for decades. Possible side effects are usually mild and short-lived: a fast heartbeat for a minute from the adrenaline in some anesthetics, a small bruise, or tenderness at the injection site. True allergy is rare.
Tell your dentist about your medical conditions and medicines, especially heart problems, high blood pressure, pregnancy or previous reactions, so the anesthetic and dose can be chosen accordingly.
Sedation for anxious patients
Sedation reduces anxiety while the patient remains conscious and able to respond. It is always combined with local anesthesia, which provides the pain control. Depending on the setting, sedation can be given by inhaled gas, tablets or injection. It requires specific training, equipment and monitoring, and is not available in every clinic. If anxiety prevents you from having treatment, discuss it openly with your dentist: many people manage well with explanations, short visits and agreed breaks.
General anesthesia
Under general anesthesia the patient is completely asleep. In dentistry it is reserved for particular cases, such as young children who need extensive treatment and cannot cooperate, some patients with special needs, or complex surgery. It is carried out in a hospital or specialised setting, with an anesthetist. Our article on helping a child who is afraid of the dentist explains the approaches tried first.
Anesthesia and comfort at Ajam Dental Clinic, Tripoli
At Ajam Dental Clinic, Fouad Chehab Boulevard, Al-Makateb Building, 1st floor, Tripoli, treatment is carried out under local anesthesia with attention to comfort: numbing gel, a slow injection, time for the anesthetic to work and the option to pause whenever you need. We ask about your health beforehand and explain each step. Learn about our oral surgery and extractions and contact us by WhatsApp or phone if you have questions before your visit.
Frequently asked questions
Why does local anesthesia sometimes not work well?
Inflamed or infected tissue is more acidic, which can reduce the effect of the anesthetic, so a very painful tooth may need more time or an additional injection. Anatomy also varies between people. Tell the dentist if you still feel sharp pain; there are several ways to deepen the anesthesia.
Can I drive after dental anesthesia?
After local anesthesia alone, most people can drive, as it does not affect alertness. After sedation or general anesthesia, you must not drive, and you need someone to accompany you home. Follow the specific instructions you receive.
Is dental anesthesia safe during pregnancy?
Local anesthetics commonly used in dentistry are considered safe during pregnancy in normal doses, and treating pain or infection is often safer than leaving it. Non-urgent treatment is usually planned for the second trimester. Always tell the dentist you are pregnant so the choice and dose can be adapted.
Can I eat before a dental appointment with local anesthesia?
Yes. A light meal beforehand is usually a good idea, because you may not want to eat until the numbness wears off. Before sedation or general anesthesia, however, there are strict fasting rules that you will be given in advance.
How long after anesthesia can I eat?
Wait until the feeling in your lips, cheeks and tongue has returned, usually two to five hours after treatment. Eating earlier risks biting or burning the numb tissue without noticing. Cool, soft food and drinks are best at first.
Have a question about your teeth?
Send a WhatsApp message to Dr. Abdel Rahman Ajam or Dr. Soumaya Ajam, or call the clinic to book a consultation.
This article provides general information for patients. It does not replace an examination by a dentist, who can advise you on your own situation.
