What is Tomography?
Last updated: November 23, 2024
What is dental tomography, and why would I need it?
Dental tomography is a type of advanced imaging technology that creates detailed, three-dimensional pictures of your teeth, jaw, and surrounding structures. Unlike traditional dental X-rays, which provide a flat, two-dimensional image, tomography delivers a much more comprehensive and precise view. This can help your dentist better understand what’s happening in your mouth and create a more accurate plan for your dental care.
Dentists often recommend tomography when they need to see all the fine details inside your jaw and teeth. For example, if you’re planning to get dental implants, tomography can show the exact shape, size, and density of your jawbone. This is important to ensure that the implant fits properly and is placed securely. It’s also useful for evaluating wisdom teeth, locating impacted or missing teeth, and assessing any abnormalities, such as cysts, tumors, or infections that might not show up clearly on regular X-rays.
Another reason you might need tomography is if you’re experiencing pain or discomfort that’s hard to pinpoint. The 3D images help the dentist locate problems like cracks, fractures, or hidden decay that can be missed in a standard dental exam. By seeing the entire structure of your teeth and jaw, the dentist can make a more accurate diagnosis and recommend the best treatment for your situation.
Tomography can also be helpful in cases involving orthodontics or complex dental issues. If you’re getting braces or aligners, the images provide precise measurements that help the orthodontist plan tooth movement over time. For people with TMJ disorders (problems with the jaw joints), tomography offers clear visuals of the joint structure and helps determine the best course of treatment.
In short, tomography is a powerful tool for situations where more in-depth, three-dimensional imaging is needed for planning or diagnosing. Your dentist won’t order this scan unless it’s necessary, so it’s very likely they see something that requires a clearer picture. The extra detail provided by tomography helps improve the safety, accuracy, and outcomes of many dental procedures. If your dentist recommends it, you can feel confident that it’s an important step in your care.
Is tomography the same as an X-ray or different?
Tomography is a type of advanced imaging technology that differs significantly from traditional dental X-rays. While both are used to see what’s happening beneath the surface of your teeth, gums, and jaw, the way they work and the level of detail they provide are quite different.
Traditional dental X-rays are two-dimensional images. They give your dentist a flat view of your teeth, bones, and soft tissues. While these are helpful for detecting cavities, bone loss, and some infections, they have limitations. Since they are flat images, it can sometimes be difficult for your dentist to pinpoint issues in hard-to-see areas or to get a clear view of teeth or structures that overlap.
Tomography, on the other hand, uses advanced imaging techniques to create a three-dimensional view of your mouth. Most commonly, dental professionals use cone-beam computed tomography (CBCT). This type of scan captures multiple images of your teeth and jaw from various angles in a short amount of time. Then, a computer puts the images together to create a detailed 3D model of your mouth. This model helps your dentist see things much more clearly and from every angle.
The main difference comes down to the complexity and detail of the images. X-rays are simpler but give less information. Tomography provides much more data about your dental structures, which makes it especially helpful for planning complex procedures. For example, dentists often use tomography to plan dental implants, assess bone density, evaluate jaw issues like TMJ disorders, or locate impacted teeth. It gives them a much better understanding of what’s happening below the surface, which means a more accurate diagnosis and treatment plan.
Another difference is how the images are taken. With tomography, the machine rotates around your head to capture the data from different angles. This process is more involved than a standard dental X-ray, which usually just involves a stationary machine or bitewing X-ray film. However, tomography scans are still quick, easy, and non-invasive.
While dental X-rays remain a valuable tool for routine exams and diagnosing standard issues, tomography offers a more detailed and comprehensive look when advanced imaging is needed. Your dentist will decide which option best fits your needs based on your specific situation. Both technologies are safe, but tomography is generally reserved for cases where its advanced imaging capabilities make a significant difference.
How safe is dental tomography for me?
Dental tomography is considered very safe. This imaging technique uses advanced technology to create detailed, 3D images of your teeth, jaws, and surrounding structures. It often involves the use of cone beam computed tomography (CBCT), which is specifically designed for dental purposes. While it does utilize a small amount of radiation, the exposure is significantly lower compared to medical CT scans and is well within safe limits established by health and safety guidelines.
One key reason dental tomography is safe for most people is that the imaging process is highly focused. Unlike traditional X-rays that may capture a broader area, tomography targets only the necessary regions of your mouth or jaw. This focused approach helps reduce unnecessary radiation exposure to other parts of your body. Dentists and dental specialists only recommend tomography when it's truly needed, ensuring that the benefits of the scan outweigh any minimal risks from radiation exposure.
For further safety, dental professionals follow strict protocols to protect patients. For example, they may provide a lead apron to shield your body or a lead collar to protect your thyroid from radiation. These protective measures minimize any potential risk, especially for patients who may be concerned about repeated imaging.
It's also important to note that advances in technology have made dental tomography even safer over the years. Modern CBCT machines are designed to use lower doses of radiation while still producing highly accurate and detailed images. This combination of precision and safety ensures that your dentist can diagnose and treat conditions effectively while keeping your health a top priority.
However, pregnant patients should always inform their dentist of their condition before undergoing any imaging procedure. While the radiation levels are low, it's crucial to avoid any unnecessary exposure to the developing fetus. In such cases, your dentist may postpone the tomography or consider alternative diagnostic methods if possible.
Ultimately, dental tomography is a valuable and safe tool used for specific purposes, such as planning dental implants, evaluating jaw issues, or diagnosing complex dental conditions. If you have concerns about the safety of tomography, discuss them with your dentist. They can provide you with more personalized information and explain why the scan is necessary for your dental care. Your dentist’s goal is to protect your health while offering the best possible treatment.
Does tomography hurt or cause any discomfort?
Dental tomography, also called cone beam computed tomography (CBCT), is a safe and painless imaging method. During the process, you won’t feel anything because it’s non-invasive, meaning there are no tools or devices entering your mouth or body. Unlike other procedures where discomfort might arise from physical contact or pressure, tomography simply uses a rotating scanner to capture images of your teeth, jaw, and surrounding structures.
The machine works quickly and quietly, usually taking less than a minute to complete the scan. You’ll be asked to stay still while the CBCT machine moves around your head. Some people compare the experience to having your picture taken. The only thing you might notice is the movement of the device, but it doesn’t touch you, so there’s no physical sensation to worry about.
For patients who feel nervous or anxious about dental procedures, it’s reassuring to know that tomography does not involve needles, drills, or anything uncomfortable. While you may need to stand or sit still for a short time, the process is straightforward and stress-free for most people. If you have concerns about claustrophobia, you should know that the CBCT scanner is open and does not enclose you, unlike traditional medical CT scanners. This open design helps many patients feel more relaxed.
It’s worth mentioning that dental tomography requires no special preparation beforehand. For example, you won’t need numbing agents or sedatives, as the procedure is entirely pain-free. Patients with sensitive teeth, jaw pain, or other dental conditions can comfortably undergo the scan without any issues.
After the scan, there’s no recovery period, so you can go about your day as usual. Because tomography is all about capturing clear and detailed images, the focus is on precision and convenience rather than anything that could cause discomfort. If you’re still feeling uncertain, don’t hesitate to ask your dentist or the technician to walk you through the process. They can explain exactly what will happen step by step to help you feel at ease.
In summary, tomography is a quick, safe, and completely painless process. It’s designed to make diagnostics easier for your dentist while keeping you comfortable. Most patients are surprised at how simple and efficient the experience is. If you have any worries, let your dental team know so they can ensure the process is as smooth and stress-free as possible for you.
How long does the tomography scan take?
A tomography scan usually doesn’t take very long. In most cases, the actual scanning process lasts just 10 to 30 seconds. The advanced technology captures detailed 3D images of your teeth, jaw, and surrounding structures in a single rotation. However, when you add in preparation and positioning time, the entire process may take about 5 to 15 minutes.
Before the scan begins, the dental team will guide you through the setup process. They’ll ensure you’re seated or standing in the right position, depending on the type of tomography machine being used. If it’s a cone beam CT (CBCT) scan, you may need to bite down on a small piece of plastic to keep your mouth still. This step ensures the images are clear and precise. Positioning may take a few minutes as the equipment is adjusted to suit your anatomy.
Once you’re correctly aligned, the technician or dental professional will start the scan. During this time, the machine will rotate around your head, capturing multiple images from different angles. You’ll need to stay as still as possible during this part of the process to ensure that the resulting images are accurate. Fortunately, the scan is quick, and you shouldn’t feel any discomfort throughout.
After the scan is complete, the data is processed to create detailed 3D images. This step happens almost immediately, so the dentist may be able to review your results right away. However, if further analysis is required, the dentist may take more time to study the images and diagnose any specific issues.
In summary, the tomography scan itself takes less than a minute, but the overall process, including preparation, positioning, and review, may last around 5 to 15 minutes. It’s a quick and convenient procedure designed to provide highly detailed images to assist in your dental care. If you’re concerned about time or any specific steps, feel free to ask your dentist for guidance before the appointment.
Will my insurance cover the cost of a tomography scan?
Whether your dental insurance covers the cost of a tomography scan depends on several factors, including your specific plan, the reason for the scan, and how your dentist or dental office files the claim. Tomography scans, such as Cone Beam Computed Tomography (CBCT), are advanced imaging tools often used for detailed views of your teeth, jaw, and surrounding structures. While these scans can be extremely helpful in diagnosing complex dental issues or planning treatments like implants or orthodontics, coverage for them isn’t always guaranteed.
The first step to determine coverage is to review your dental insurance benefits. Some insurance plans include tomography scans under diagnostic procedures, while others may consider them an upgraded or elective option. If your plan lists general diagnostic care, it may cover routine X-rays but not necessarily specialized imaging like tomography scans. You can look at your coverage booklet or call your insurance provider directly to clarify if 3D imaging or CBCT scans are included.
Insurance companies often require the tomography scan to be medically necessary. This means the scan must be essential for diagnosing or treating a specific condition, rather than being obtained for general observation or convenience. For example, if your dentist orders the scan to plan a dental implant surgery or evaluate a potential oral health issue like an impacted tooth, insurance is more likely to cover it. However, if the scan is done for more cosmetic or elective treatment purposes, your insurance may deny the claim. In that case, you could be responsible for the full cost, which ranges from a few hundred dollars to more, depending on your location and dental office.
It's also important to note that some dental offices work with specific insurance providers and have experience negotiating claims. They might help you submit documentation or justification that shows why the tomography scan is necessary. If insurance doesn’t cover the scan, many offices offer payment plans, care credit options, or even discounts for patients paying out of pocket.
Before the scan, ask the dental office if they can provide a cost estimate and verify your insurance benefits. This way, you’ll avoid surprise fees and have a better understanding of how much, if any, of the tomography scan’s expense will fall on you. When in doubt, contact your insurance provider directly and provide the dental office’s procedure code for the scan to get the clearest answer.
What can the dentist see with a tomography scan that they can't see with regular X-rays?
Dental tomography, often specifically Cone Beam Computed Tomography (CBCT), provides a much more detailed and comprehensive view of your teeth, jaw, and facial structures compared to standard X-rays. While traditional X-rays are two-dimensional (showing height and width of the structures), tomography creates a three-dimensional image, allowing your dentist to view your mouth from multiple angles and depths.
This 3D view is especially helpful for diagnosing complex dental issues or planning advanced treatments. For example, in the case of dental implants, tomography lets your dentist evaluate the exact dimensions, density, and health of your jawbone. Knowing these details helps them determine the best size, angle, and placement of the implant to ensure long-term success. In contrast, regular X-rays might not show the full picture, such as the precise thickness or depth of bone in certain areas.
Dental tomography is also valuable in detecting conditions that may not be visible with standard X-rays. This includes problems like small fractures in teeth, early-stage infections, or issues in the root canals. If you're experiencing unexplained pain or discomfort, a tomography scan can help locate the problem by examining every layer of the affected area. It can also identify issues in the joints of your jaw (such as temporomandibular joint disorders, or TMJ), sinus cavities, and even irregularities in your airway that affect breathing.
Another advantage of tomography is better accuracy in diagnosing impacted teeth or evaluating wisdom teeth. While an X-ray might show an impacted tooth as simply sitting at an angle, tomography can reveal its exact position in relation to nerves, blood vessels, and other teeth. This ensures that your dentist has all the critical information before recommending surgery or treatment.
Tomography is also commonly used in orthodontics. If you’re getting braces or aligners, CBCT scans allow your orthodontist to create a treatment plan tailored to your unique bone structure and tooth alignment. Since the 3D imaging provides such a detailed map, it makes planning for tooth movement much more precise.
In summary, tomography’s main advantage over X-rays is its ability to give a clearer, more detailed view of your dental and facial anatomy. This helps your dentist catch problems early, plan treatments more accurately, and use your time and money more efficiently. If your dentist recommends tomography, it's likely because they want to offer you the safest, most effective care possible.
Do I need to prepare in any special way before getting a tomography scan?
Preparing for a dental tomography scan is usually simple and doesn't require extensive steps. Your dentist will give you specific instructions, but here are some general guidelines to help you feel ready for the process.
First, you don’t need to fast or avoid food or drinks before a dental tomography scan. This procedure isn’t like other medical imaging tests, such as an MRI or a CT scan that might require you to avoid eating ahead of time. You can go about your normal routine, whether your appointment is in the morning or later in the day.
One important step is removing any metal items from your head or neck area before the scan. This includes jewelry, such as earrings, necklaces, nose rings, or other piercings. Glasses, hairpins, and dentures (if applicable) should also be removed. Metal can interfere with the imaging process, causing distortions in the scan and making it harder for your dentist to get clear results. If you are unsure which items might need to be removed, ask your dentist for clarification.
If you wear fixed dental appliances or braces, let your dentist know. Most fixed orthodontic appliances stay in place during the scan, but your dentist will decide if any adjustments need to be made.
For clothing, it’s a good idea to wear something comfortable and avoid shirts or blouses with metal buttons, zippers, or embellishments located near the neck area. These can also interfere with the scan. Many offices may provide protective gear, like a lead apron, to wear during the scan to shield you from radiation exposure.
You don’t need to worry about feeling pain or discomfort during the tomography scan. The process is quick, painless, and non-invasive. Many tomography machines are designed to be more patient-friendly, meaning you’ll either stand or sit still briefly while the machine moves around your head. Staying still is vital to ensuring the scan produces accurate and detailed images of your teeth, jaw, and surrounding structures. Your dentist or technician will guide you through this step.
Lastly, let your dentist know if you’re pregnant or might be pregnant. While dental tomography is generally safe, your dentist may take extra precautions or recommend delaying the scan if it isn’t urgently needed during pregnancy.
By following these instructions and asking your dentist for any additional advice, you can ensure a smooth and stress-free experience during your dental tomography scan!