Going to sleep for oral surgery: Simple Rules, Why They Matter, and How They Keep You Safe

When a patient is given general anesthesia (often called “going to sleep”) for oral surgery, the clinic will give a list of rules. These rules may sound strict, but they help keep you safe. Below is a clear, easy-to-read explanation of the usual rules, why they exist, and what safety problems they prevent.

Fasting: when to stop eating and drinking

You will usually be told not to eat solid food for about 6 hours before surgery and not to drink clear liquids for about 2 hours before surgery. Clear liquids include water, apple juice (no pulp), or black coffee. These rules help lower the chance that food or liquid in your stomach will come up into your lungs while you are asleep. This is called aspiration and can cause serious lung problems. Shorter fasting for clear liquids helps you stay hydrated and comfortable, so teams try to balance safety with comfort. (1)

Medicines: tell the team what you take

Some medicines can change bleeding risk or how your body reacts to anesthesia. Blood thinners (for example) may need special planning with your doctor. Newer drugs, like GLP‐1 medicines used for diabetes or weight loss, can slow how fast your stomach empties. That may change fasting instructions. Always tell the surgeon and anesthesiologist every medicine and supplement you take so they can make a safe plan for you. (2,3)

Jewelry, piercings, nail polish, and makeup

Remove jewelry and body piercings before surgery. Metal can cause problems with some surgical tools and can get in the way during care. Remove nail polish and artificial nails too, because they can make the small finger sensor (pulse oximeter) give wrong readings. Take out contact lenses and heavy makeup as well. These steps make monitoring your vital signs more accurate and reduce small risks during the operation (4,5).  

You need a driver and someone to stay with you

After general anesthesia you should not drive or be left alone for several hours. Anesthesia and common pain medicines can slow your thinking and reactions. You should arrange for a responsible adult to drive you home and stay with you until you are more awake and steady. Many places advise not driving for 24 hours or until you are fully back to normal (6).

Smoking and alcohol

Try not to smoke right before surgery, and avoid heavy drinking. Smoking makes breathing problems and poor healing more likely. Drinking a lot of alcohol can raise bleeding and infection risks and cause other problems. If you use alcohol often, tell your care team so they can plan for safety (7,8)

What to bring and ask about before surgery

• Bring a list of all medicines, supplements, and your usual health problems.
• Ask which medicines you should take the morning of surgery with a small sip of water. • Ask how long to fast (stop eating/drinking) for your specific case.
• Plan a ride home and a person who can stay with you.
• Leave valuables like jewelry at home if possible.

Why do these rules exist?

These steps are designed to prevent a few serious problems: breathing stomach contents into the lungs (aspiration), too much bleeding, poor monitoring because sensors are blocked, reactions with medicines, and being unsafe to drive or make decisions after anesthesia. Following the rules helps your surgery go smoothly and lowers the chance of needing extra care.