Plenty of oral surgeries require the use of dental anesthetics. There are many different sedatives used in oral procedures, each with its own effects on the body. Sedatives keep the patient semi-conscious, while general anesthesia puts the patient in a fully unconscious state. But what goes on in the brain while the patient is under the effects of sedatives or anesthesia during an oral surgery?
Some patients love to know the ins and outs of sedation used in dental surgeries, and this post is absolutely for you if you count yourself among that particular tribe. Knowledge is half the battle, and in this case, it helps reduce any anxiety surrounding dental sedatives.
The Spectrum of Consciousness During Oral Surgery Sedation
When patients come in for surgery at our Cincinnati clinic, they’re usually put under what’s called “conscious sedation.” It’s a drug-induced state of consciousness where patients are incredibly relaxed. They’re still able to respond with intention to verbal commands, and they maintain their breathing and other natural reflexes.
General anesthesia used in mouth surgeries, however, is different. When a patient is put under general anesthesia, they’re completely unconscious for the duration of the procedure. They require a machine to help them breathe, and they have no protective reflexes. General anesthesia is used in only the most complicated cases.
When a patient is given an oral sedative before a dental procedure, the effects kick in quickly. Patients feel deeply relaxed and drowsy, and they experience a significant anxiety reduction. Their perception of time is slightly skewed, and time passes quickly.
The Types of Sedatives Used in Oral Surgery
We’ve already mentioned that general anesthesia causes total unconsciousness, and it’s only used in extremely complicated oral surgeries or procedures that will take a long time. If you’re put under in this manner, your dental surgery team will monitor your vital signs throughout the procedure, and you’ll have assistance in breathing.
Here are the other types of sedation you might expect to experience, depending on the complexity of your next oral procedure:
- IV Sedation: Administered intravenously, and your surgery team will also monitor you closely since it’s the deepest level of sedation possible short of using general anesthesia.
- Oral Sedation: Administered via a pill before the surgery, and you’ll experience only mild to moderate sleepiness.
- Nitrous Oxide: Administered through a facial mask, this form of sedation helps you to relax and feel calm, and its effects wear off quickly.
- Local anesthesia: Usually given with an injection and used alongside other sedatives to numb the immediate area affected by your oral surgery procedure.
How Dental Sedatives Work
Oral surgery sedatives work by repressing the GABA system in patients’ brains. The GABA system is a neurotransmitter located in the brain. Its main function is to slow down nerve cell communications, preventing overstimulation. In short, it reduces stress and anxiety, and it promotes relaxation.
If this sounds familiar, it’s because that’s essentially what dental surgery sedation does. IV sedatives for oral surgery work in tandem with the GABA system and enhance its effects. With the help of a sedative, the GABA system slows down the transmission of signals between neurons in the brain. This suppresses awareness and slows thoughts.
Thanks to its importance, dental surgical practitioners are rigorously trained for sedative administration. They’re experts at slowly adjusting the dosage to achieve maximum effect with minimal risk.
Why Amnesia is a Common Side Effect of Dental Sedation
It‘s hard to find someone who actually wants to remember their surgical dental procedure. Thankfully, one of the most common effects of sedatives is the ability to cause amnesia in patients. During dental IV sedation, the ability to form new memories is greatly inhibited. Patients might remember bits and pieces, but most of the operation is a blur.
The hippocampus is the region of the brain that converts short-term memories into long-term memories. The sedatives commonly used in dental surgeries disrupt the hippocampus and its functions. This disruption prevents the formation of new long-term memories, a concept known as anterograde amnesia. This is actually a huge win for patients since it causes them to avoid the mental trauma and anxiety that comes along with the sights, sounds, and feelings of a dental operation.
The Safety Net for Dental Sedatives
The sedatives routinely used in oral surgeries are incredibly safe and effective. However, there’s always the potential for a unique patient reaction to the medication or an unforeseen complication.
But don’t worry, because in the unlikely event of any complications, there are reversal agents for IV dental sedatives. Flumazenil is the most commonly used reversal agent in oral surgeries. The drug rushes to the same GABA system receptors as the sedative. The reversal agent pushes the sedative molecules off the receptors, immediately restoring the normal function of the GABA system.
Dental surgical specialists rarely have to use a reversal agent. The most common circumstances that necessitate a reversal agent are:
- Paradoxical reaction to dental sedatives – Sometimes, patients experience the opposite of calm after taking a sedative. They might become aggressive, displaying agitation and confusion.
- Respiratory depression – If the patient’s consciousness levels fall too low, their breathing slows. The reversal agent immediately restores their normal breathing abilities.
- Unforeseen emergency – If a medical event unrelated to the sedative arises, reversal agents immediately wake up the patient. This allows them to be fully cognizant in case further diagnosis and treatment are required.
The entire sedation process during a dental operation is managed by trained professionals. The dental surgeon and their assistants are highly competent and focused on safety and comfort. The biggest, most exciting memory of the day will be the car ride home, guaranteed.
