The goal of dental anesthesia is to ensure that our procedures are always performed painlessly. Whether it is a surgical or non-surgical treatment, it can be stated that after administering the proper anesthesia, the patient will not feel pain during the procedure.
The essence of anesthetic solutions is to block the function of sensory nerves in the mouth, gums, and pulp by delivering different anesthetic fluids to specific areas. As a result, the pain-sensitive nerve endings do not transmit pain signals to the brain.
Its uniqueness lies in the fact that it neither blocks the function of the motor nerves nor interferes with the function of deep, pressure-sensitive nerves. As a result, although the patient does not feel any pain, they may still experience pressure or touch sensations even around the anesthetized area. It is important to emphasize that this does not indicate pain, but rather a dull sensation that something is happening in that area.
Of course, there is a more serious form of anesthesia that affects the entire body, known as general anesthesia. In this case, we not only eliminate the pain sensation but also turn off the patient's consciousness.
It is primarily indicated for major surgical procedures, extreme fear, or in cases of patients who are difficult to cooperate with, as it places a significantly different strain on the body compared to local anesthesia. The procedure requires an anesthesia machine, mechanical ventilation, and an anesthesiology team.
Even during general anesthesia, a separate anesthetic is required to eliminate the sensation of pain.
You can read more about general anesthesia here.
Local anesthesia refers to eliminating pain sensation in the immediate area of the procedure using dental anesthetics. This is the most commonly used form of anesthesia. It can make procedures on the mucous membranes, tooth pulp, or jawbone pain-free.
There are different forms of local anesthesia.
During mucosal anesthesia, only the superficial layers of the mucous membrane are numbed. This allows for very minor, surface-level procedures to be performed and can also be used prior to injection anesthesia to reduce the discomfort caused by the needle. Lidocaine spray or benzocaine-based flavored gels can be used for this purpose.
In terminal anesthesia, the anesthetic fluid is applied directly to the area around the specific tooth, so only the treated area will become numb, while more distant, non-relevant areas will remain unaffected.
It is primarily used for anesthesia of the upper teeth and mucous membranes, where the teeth are innervated by small nerve bundles individually. In the past, lidocaine was used, but nowadays, an anesthetic injection containing articaine is more commonly applied for this purpose.
The essence of conduction anesthesia is that a larger, central nerve trunk is anesthetized, thereby simultaneously eliminating the pain sensation of all smaller nerves associated with that trunk. It is most commonly used for the anesthesia of the lower teeth and mucous membranes, as, for anatomical reasons, these teeth are not innervated by small individual nerves but by a larger nerve trunk. The central part of this trunk is easily accessible and can be anesthetized.
The advantage of conduction anesthesia is that with a single injection, the pain sensation of multiple teeth is eliminated. The disadvantage is that a large area becomes numb, even if only one tooth is being treated. The same types of anesthetic solutions used for terminal anesthesia are applied for this purpose.
The active ingredients in dental anesthetic solutions are, in most cases, lidocaine or articaine. These substances are used in dissolved form (2% solution), typically combined with adrenaline, which has a vasoconstrictive effect. The adrenaline enhances and prolongs the anesthetic effect.
Anesthetic spray, lidocaine ointment, or other anesthetic gels used for mucosal numbing contain a higher concentration of the active ingredient, typically 5-10%.
To administer the anesthetic solution, a syringe and needles of various diameters and lengths are required. Traditional syringes are made in a sterile, disposable form. A needle is attached to the syringe for use. The standard needle typically has a diameter of 0.4-0.5 mm.
Instead of traditional tools, our clinic uses the carpule system. In this system, the syringe is not disposable, and the anesthetic solution is loaded in cartridge form. The needle can be secured to it with threaded fittings.
Advantages:
We typically use a very fine injection needle (Carpule) and always apply anesthetic gel beforehand to avoid any discomfort from the needle prick. Often, it is not the needle insertion itself that causes discomfort in the mucosa but rather the injection of the anesthetic fluid into the tissues. To alleviate this, our team always deposits the anesthetic fluid very slowly, resulting in less tension during the anesthesia process.
The duration of numbness can never be defined by a single word, as it depends on numerous factors. It varies based on the area to be anesthetized, the amount and type of anesthetic administered. Additionally, it depends on the patient's current stress level, age, prior food and fluid intake.
Generally, the effects of anesthetic solutions wear off about 2-3 hours after administration, though individual variations can occur. As numbness fades, a tingling sensation may be felt, which is a normal response.
Fortunately, complications are quite rare, and when they do occur, they are usually mild and temporary, with effects that resolve after a short period.
Some patients may exhibit allergic reactions to anesthetic solutions. It is very important to inform your dentist if you have had any unusual reactions to anesthesia in the past, as this will allow us to choose an alternative anesthetic for your treatments.
After the use of a larger amount of anesthetic, mild palpitations and an increased heart rate may occur. This does not indicate an allergic reaction, as it is simply a response to the vasoconstrictor component of the solution.
Since most anesthetics contain a vasoconstrictor (adrenaline), it is important to inform your dentist if you have had issues with eye pressure (glaucoma) or if you use eye drops. In such cases, an adrenaline-free solution can be used.
After anesthesia, in rare cases, uncomfortable symptoms may develop, such as a hematoma (bruise), an anemic area on the skin, or in extreme cases, facial paralysis (nerve injury due to dental anesthesia). These are all temporary and will disappear once the effects of the anesthetic wear off.
When considering the materials used during pregnancy, we must always evaluate the risk of postponing the procedure and the potential dangers of the materials used during the procedure. Delaying dental treatments can have much more serious consequences than administering an anesthetic solution.
For this reason, we recommend that if it is not an emergency procedure, it is worth waiting until the second trimester, but it is not advisable to delay necessary procedures any further. Therefore, during pregnancy, we do not avoid the use of anesthetics for dental procedures starting from the second trimester.
Is lidocaine spray effective on teeth?
Lidocaine-based spray is not suitable for numbing teeth; it can only be used for numbing the mucous membrane.