Different Types of Dental Anesthesia and Their Side Effects
When preparing to have dental procedures it is vital that patients be informed of the various options of Anesthesia and their potential side effects so that they can make informed decisions, and know what to expect. Going in with a routine filling, removal of the wisdom teeth or an even more complex process, say a dental bridge, your dentist will recommend the best type of Anesthesia based on the treatment you require and your needs.
What is Dental Anesthesia?
Dental Anesthesia is a combination of medications that could be employed in preventing or reducing pain during dental procedures. These agents work by preventing or paralysing the nerve impulses in some parts of the mouth or by producing some level of sedation. Dentists use Anesthesia in many procedures, including the simplest filling of cavity and the more complex ones like wisdom teeth removal, root canals, dental bridge placement, and TMJ.
Types of Dental Anesthesia
Local Anesthesia
The most popular type of dental anesthesia is local anesthesia. This procedure requires the injection of an anaesthetic substance, usually lidocaine or articaine, into the gum tissue of the region of treatment. The drug has the effect of blocking the nerve impulses in that particular part of the body causing numbness so that the pain cannot reach the brain but the patients are in full control of what happens during the procedure.
Local Anesthesia is used by dentists in a very broad scope of treatment such as fillings, crowns preparation, fittings of dental braces, extractions and periodontal treatment. The effects normally set in a few minutes and take between one and a few hours depending on the type of medicine used and the presence of a vasoconstrictor such as epinephrine.
The main benefit of local Anesthesia is its specific local effect and a reduction of the systemic effects with effective pain management. Patients are able to interact with their dentist during the procedure and they can often continue with their daily activities as soon as the procedure is over but must take caution when eating and drinking until they feel the sensation is normal.
Nitrous Oxide (Laughing Gas)
Laughing gas is a type of mild sedation that is administered by use of nitrous oxide where patients are awake and alert. This gas is applied by means of a small mask that covers the nose; it is a colourless gas that smells sweet and gives a feeling of relaxation and euphoria which helps to remove anxiety and discomfort during dental operations.
The effects come within minutes of inhalation and are gone almost instantly after the mask is removed, so the patients can drive home and resume their normal activities immediately. Local Anesthesia is commonly used with nitrous oxide by dentists to tackle the issue of pain management and anxiety treatment at the same time.
It is a form of sedation that is especially useful in patients with dental phobia, patients having prolonged procedures, patients with sensitive gag reflex or children who are unable to remain still during their treatment.
Oral Premedication (Oral Sedation)
Oral premedication is taking of prescribed sedation medication, typically of the benzodiazepine family, at about an hour prior to the dental appointment. Triazolam, diazepam and lorazepam are common drugs that cause different degrees of sedation that can be minimal to moderate depending on the amount of the drug that has been used.
Patients can be relaxed with little sedation without fully waking up and being unable to respond normally. Moderate sedation can result in drowsiness, speech problems and inability to recall the process, but patients can still be roused and answer questions.
Oral sedation is applicable to patients who have moderate dental anxiety or those who have prolonged procedures. Due to the duration of the effects, which may take several hours, patients have to make some transportation to get to the appointment and back, as well as, they should not drive or use machinery during the rest of the day.
Intravenous (IV) Sedation
IV sedation is the administration of sedative drugs into the blood, more specifically into a vein, usually the hand or the arm. This is a more profound mode of sedation and the dentist has a clear control of the level of sedation during the procedure.
In deep relaxation IV sedation, patients are unable to remember anything much about the procedure after being put into a state of deep relaxation. Dentists prescribe IV sedation to complex surgeries, such as multiple extractions, surgical wisdom teeth, large-scale reconstruction, or patients with high levels of dental anxiety. Special training and monitoring equipment is needed in this form of Anesthesia.
Common Side Effects of Dental Anesthesia
Although dental anesthesia is rather safe when provided by a qualified professional, patients must be aware of the side effects each type may have. The majority of the reactions are mild and self-limiting.
Side Effects of Local Anesthesia
Local Anesthesia has the most prominent side effect being the existence of a numbness in the area of the injection that may take several hours before fading off after leaving the dental office. Patients might bite their cheek, lip or tongue without knowing during this period. Other individuals get tingling or the pins and needles sensation as the Anesthesia wears out.
Reactions at injection sites are not very uncommon and they could include short term pain, tenderness, bruising, or swelling at the point of needle entry into the tissue. The symptoms normally clear up within days. In other cases, patients report bitter taste in case anaesthetic solution gets into the mouth during injection.
The inability to open the mouth completely, known as trismus, may be present in case the nearby muscles are impacted by the injection. This situation normally subsides in a few days to a week. In some isolated cases, nerve damage can also result in temporary numbness of weeks or months but this will be permanent damage which is very rare.
Local Anesthesia has systemic reactions that are uncommon but may include an increased heart rate or blood pressure especially in cases where epinephrine is added. Patients can also have temporary nervousness, shakiness, or palpitations of the heart that normally pass within a short period of time.
Local anaesthetics may cause allergic reactions although this is uncommon. Milder reactions can be manifested in the form of skin rashes or itch, and severe anaphylactic reactions are to be taken to a doctor immediately and may involve the inability to breathe, swelling of the face, and severe blood pressure decrease.
Side Effects of Nitrous Oxide
Nitrous oxide has very few side effects, and it is one of the least dangerous drugs of sedation. Yet, other patients also complain about nausea or vomiting during or soon after administration, especially on higher concentrations. This can be reduced by consuming a light meal prior to the flight.
Nitrous oxide and the short term effects of the removal of the mask can cause dizziness and light-headedness. Patients are to sit until they become stable. Others complain of headaches after the administration of nitrous oxide, but they normally fade away within a short period.
The temporary sensations can be tingling in the extremities, sense of heaviness or floating, auditory changes as ringing in the ears. They can talk or giggle excessively when administering it. Patients are very rarely reported to have hallucinations or vivid dreams when under sedation.
Side Effects of Oral Sedation
The most expected and typical side effects of oral sedation are drowsiness, which can last a number of hours following the procedure. Patients generally experience a sense of grogginess and lack of coordination and judgment. That is why it is necessary to organize the transportation- driving under the influence of the oral sedatives is extremely dangerous.
It is also common in memory impairment or amnesia of the procedure especially when the sedation is moderate. The dry mouth can happen and can be remedied by taking water after it is safe to take it. Some patients experience nausea and dizziness, particularly when they are standing up rapidly. The heads may begin to ache when the drug wears off.
Side Effects of IV Sedation
IV sedation has the same side effects as oral sedation, only at a higher level since the level of sedation is deeper. Drowsiness is anticipated and it usually takes the whole day of the procedure. Several hours of impaired coordination and cognitive are observed, which require a rest and supervision.
Patients might experience bruising, tenderness, or mild swelling at the site of insertion of the IV. IV sedation is more likely to cause nausea and vomiting although the anti-nausea drugs may be given via the IV line.
Deepest sedation can result in respiratory depression, in which the breathing becomes slow. That is why oxygen monitoring and vital signs need to be continuously monitored in case of IV sedation. Headache, light-headedness and the overall sickness of a hangover can continue on the next day. Emotional reactions to the emergence of sedation can include crying or confusion by some patients.
Complications Related to Dental Procedures
In addition to side effects of Anesthesia, some of the complications may occur due to the dental procedure. One of the most frequent complications of extraction is called dry socket, a painful condition that appears when the blood clot which covers an extraction site is dislodged. Although not anaesthetic in itself, smoking, poor oral health or forceful rinsing during the numb state may contribute to the risk of dry socket.
Post-Anesthesia Dental Care
Post-anaesthetic care prevents the side effects and enhances the healing process. As long as your mouth is still numb due to the local anesthesia, do not take hot food or drinks that may burn tissues unknowingly. Chew carefully so that you do not bite your cheek, tongue or lips. Continue with soft and cool foods until sensation returns.
Oral hygiene should be maintained even in the case of Anesthesia. Cleanse the area of treatment with soft-bristled toothbrush and fluoride toothpaste. Use an antimicrobial mouthwash, like chlorhexidine mouthwash, to control bacteria and aid in healing but do not overdo the swishing that may rip open the surgical sites.
Once dental floss is reinstated, it is necessary to be delicate around treated areas to prevent irritation. Keep hydrated with ample water and this aids in the elimination of medications and healing.
In case of any procedure where one has to be put in a sedative process, make arrangements to have someone to spend a few hours with you once you are back home. Alcohol is to be avoided, because it may react with other sedative drugs left over. Take your time before resuming normalcy after undergoing Anesthesia, since it needs time to be completely metabolized.
Look at symptoms of complications, including excessive bleeding, pain that is too severe to be managed by prescribed drugs, fever, excessive swelling, difficulty breathing or swallowing, and infection. Such symptoms of gum disease as constant redness, swelling, or pus are also reasons to reach out to your dentist.
Dental Procedures and Anesthesia Considerations
Anesthesia must differ depending on the type of dental procedure. Basic fillings do not usually require more than local Anesthesia, whereas wisdom teeth extraction may include local Anesthesia and the use of sedation. A dental bridge can be installed using local Anesthesia to prepare the crown. The treatment procedures of the TMJ are quite different as they can be as simple as taking minimal Anesthesia or even as complex as surgery that requires deeper Anesthesia.
Special attention should be paid to patients who have a dental condition. Patients who have the symptoms of gum disease or are infected with it might require antibiotics prior to some procedures. Patients with rotten teeth that have a lot of work can be sedated to overcome anxiety.
Some of the medical conditions that influence the decision about Anesthesia are heart disease, high blood pressure, diabetes, respiratory, and neurological disorders. Always bring a full list of medical history and any medication you are on to your dentist.
When to Consult Your Dentist
The side effects of dental anesthesia are self-limiting, and most of them are resolved within hours to a few days. Nevertheless, there are symptoms that are a cause to call your dentist at once. Urgent treatment is required should you have any difficulty with breathing or swallowing, chest pain or irregular heartbeat, allergic reactions that are severe and can be identified with facial swelling, uncontrolled blood loss, or any symptoms of infection such as fever.
Call your dentist when you are at work in case of persistent numbness after the expected period, pain, which does not decrease despite medications, any symptoms of dry socket after an extraction, or a feeling that something wrong is happening during your recovery.
Discuss you concerns with your dentist before getting any procedure that needs Anesthesia. Take a good look into your medical history, list all the medications you use, and be honest about the levels of anxiety.
FAQs
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Is dental anesthesia safe for adults over 30?
Yes, dental anesthesia is safe in adults above 30 in case it is done by qualified dental practitioners. Old age does not render Anesthesia dangerous, but dentists take into account your general health condition, medical history, and medications and choose a type and a dosage.
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How long do numbing side effects last?
The numbness of local Anesthesia can be one to five hours, depending on the type of medication applied. Majority of the patients experience a full recovery in sensation in two to four hours of the appointment. In case numbness continues more than eight hours, call your dentist because this can be a sign of a complication related to the nerves.
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Can Anesthesia cause dry socket?
Dry socket does not directly come as a result of Anesthesia, but rather is caused when the blood clots covering an extraction site are dislodged too soon. But activities done when the mouth is numb like aggressive rinsing, spitting, drinking using a straw, or smoking may lead to the occurrence of dry socket. In case you start to experience severe throbbing pain several days after an extraction, call your dentist.