In my years of practicing dentistry since 2014, I have noticed a very common trend among our patients here in Mbale and surrounding areas. Many people arrive at the clinic having fasted for several hours. When I ask why, the answer is usually the same: “I didn’t want the food to disturb the medicine,” or “I was worried my mouth would be dirty for the doctor.”
I recently recorded a quick video explaining exactly why this could be a big mistake. Watch my full explanation on our official TikTok here!
While these concerns come from a good place, following “advice” from friends or neighbors can lead to dangerous situations once you sit in the dental chair.
I want to clear up this myth with facts and professional experience.
The Real Risk: Dizziness and Fainting (Hypoglycemia)
The biggest danger of coming to the dentist on an empty stomach is Hypoglycemia, or low blood sugar.
When you are nervous about a procedure, your body’s stress levels rise, and you burn through your energy reserves very quickly. If you haven’t eaten anything, your blood sugar can drop so low that you may feel dizzy, shaky, or even faint right in the middle of your treatment. I have on a few occasions seen this happen to some patients simply because their bodies ran out of “fuel.” This is easily preventable by eating at least a light meal before you set off for the dental clinic.
Why Your Medical History Matters
While a healthy adult should eat to prevent fainting or other issues during a procedure, it is even more important for patients managing other health conditions. We pay close attention to your medical history because it changes how your body reacts to dental stress:
- Diabetes: If you are diabetic, skipping a meal could be dangerous especially prior to a dental procedure. Taking your diabetes medication or insulin without eating before a dental procedure can cause your blood sugar to crash dangerously low. We need you to maintain your regular eating and medication schedule to keep you stable in the chair.
- Hypertension (High Blood Pressure): Pain and anxiety can cause blood pressure to spike. If you are hungry and irritable, your body is under more stress. Eating a light meal helps keep your body calm and ensures you have the strength to manage the procedure safely.
- Pregnant Women: When you are pregnant, your body is supporting two lives. Your blood sugar can fluctuate more rapidly, and fainting is a higher risk. Proper nutrition before your appointment ensures both you and the baby stay safe.
- The Elderly: Our older patients often have more sensitive systems and may be on multiple medications. For the elderly, skipping a meal can lead to severe weakness and a much slower recovery time after a procedure like a tooth removal.
Local Anesthesia is Not General Anesthesia
Many people in our society confuse a dental visit with a major hospital operation. In a big hospital surgery where you are put to sleep (General Anesthesia), doctors insist you don’t eat.. However, for most dental work, we do not sedate or put you to sleep. We use Local Anesthesia, which only numbs the specific tooth or area we are working on. This medicine does not interact with your stomach at all. In fact, local anesthesia works much better when your body is relaxed and well-fed.
The Waiting Period After Treatment
Another reason to eat before your visit is that several common procedures may require you to avoid eating for a few hours or sometimes several hours afterward. If you arrive hungry, you will be very weak by the time you are allowed to have your next meal.
- Tooth Extractions: After a tooth is removed, a blood clot must form in the socket to start the healing process. Eating too soon can dislodge this clot, causing the wound to start bleeding again or you may end up getting a painful condition called dry socket.
- Fluoride Treatments: If we apply a professional fluoride varnish to strengthen your enamel, you are typically asked not to eat or drink for at least 30 to 60 minutes to let the medicine absorb.
- Temporary Fillings or Crowns: These materials often need time to set or harden. Chewing on them immediately can cause them to break or fall out.
- Numbness Safety: Because of the anesthesia, your lips and tongue will be numb. If you try to eat before the feeling returns, you are very likely to bite your cheek or tongue severely without realizing it.
For a local person here in Mbale, having a meal like katogo, boiled cassava, or porridge before your appointment gives you the strength to handle the procedure and the long wait before your next meal.
“Will the Dentist Think I am Dirty?”
We are trained professionals. We see food debris every day, it is part of our job! We do not judge. If you are shy, simply rinse with water or brush your teeth after eating.
Actually this article is addressing just one of many misconceptions out there. If you want to learn more about other common “lies” people believe about their teeth and dentistry, read our article on Common Dental Myths That Could Be Harming Your Smile.
Get the Right Advice
Every patient is unique. Some have a sensitive gag reflex, and for them, we might recommend a very light meal. The best rule is: Do not rely on what your friends say. Get your information directly from a qualified professional.
Ready to Prioritize Your Dental Health?
- Book your appointment online
- Have a specific question? Contact our team directly
Let’s stop following the myths and start following the science. We look forward to seeing your healthy smile at Enamo Dental Clinic!
Written by Wataka Timothy, CEO – Enamo Dental Clinic. With over 12 years of clinical experience in dental health and currently pursuing a Bachelor of Dental Surgery at Makerere University.
