Emilie Meyer
Panoramic dental X-rays, also known as panos, are a type of X-ray that provides a broad view of the entire mouth, including the teeth, jaws, and surrounding anatomical structures. Unlike traditional X-rays, panoramic X-rays are extraoral, meaning the imaging machine is outside of the patient's mouth. The X-ray machine projects a beam through the patient onto film or a detector rotating opposite the X-ray tube. The radiation beam passes through soft tissues and creates images of the teeth and bones. Panoramic X-rays are typically used to diagnose problems with the teeth, assess the TMJ, or check for cysts and tumours.
| Characteristics | Values |
|---|---|
| Radiation exposure | 0.01 millisieverts (mSv) |
| Radiation comparison to traditional intraoral x-ray | About twice as much |
| Radiation comparison to other tests | Mammogram: 40 panoramic radiographs; Head CT: 200 times more; Chest CT: 700 times more |
| Radiation comparison to background radiation | About the same as one day of background radiation |
| Radiation comparison to plane flight | About the same as a short plane flight (1-2 hours) |
| Radiation reduction in digital x-rays | 70% less radiation than film x-rays; up to 90% less radiation than conventional film-type x-rays |
| Image capture | Single image of the entire mouth, including upper and lower jaws, TMJ joints, teeth, nasal area, sinuses, and more |
| Image storage | Electronically stored digital files |
| Image manipulation | Ability to adjust contrast, brightness, and darkness |
| Image transfer | Instantly transmitted to a monitor in the treatment room |
| Image parameters | Selected prior to acquisition |
| Image format | Flat image of a curved structure |
| Image advantages | Better clarity, more diagnostic, easier to send to specialists |
| Preparation | Little to none; remove metal objects, wear a lead apron |
| Frequency | Once every 3-5 years or if there is a specific concern |
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What You'll Learn
- Panoramic X-rays are extraoral, meaning the imaging machine is outside the mouth
- They produce a 2D image of the entire mouth, including the teeth, jaws, and surrounding structures
- They expose patients to a small dose of ionizing radiation to create pictures of the inside of the body
- Digital panoramic X-ray machines integrate with dental imaging software via a TWAIN interface
- They are a valuable diagnostic tool, allowing dentists to evaluate a patient's overall oral health
Panoramic X-rays are extraoral, meaning the imaging machine is outside the mouth
Unlike traditional X-rays, such as bitewing X-rays, panoramic dental X-rays are extraoral, meaning the imaging machine is outside the mouth. The X-ray tube rotates in a semicircle around the patient's head, starting at one side of the jaw and ending at the other. The X-ray machine projects a beam through the patient's mouth onto a film or detector rotating opposite the X-ray tube.
Panoramic X-rays are a commonly performed examination by dentists and oral surgeons. They are an important diagnostic tool, providing valuable information about the maxillary sinuses, tooth positioning, and other bone abnormalities. They are also used to plan treatments, such as dentures, braces, extractions, and implants.
This type of X-ray captures the entire mouth in a single image, including the upper and lower jaws, teeth, temporomandibular (TMJ) joints, and even the nasal area and sinuses. It provides a comprehensive view of the patient's entire mouth very quickly, making it easier for dentists to analyse every part.
Panoramic X-rays use a very small dose of ionizing radiation to capture the image. This type of X-ray is perfectly safe, but patients should always inform their dentist if they are pregnant as, while there is little to no risk to the fetus, most dentists avoid taking X-rays during pregnancy unless it is absolutely necessary.
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They produce a 2D image of the entire mouth, including the teeth, jaws, and surrounding structures
Panoramic digital x-rays, often referred to as 'pano', are a type of extraoral x-ray, meaning the film is outside of the mouth. This technique captures a two-dimensional image of the entire mouth, including the teeth, upper and lower jaws, and the surrounding structures such as the sinus and nerve canals. This is achieved by moving the x-ray machine in a semi-circular motion around the patient's head, capturing a detailed image of the mouth and jaw from multiple angles.
The resulting panoramic image provides a comprehensive view of the oral cavity and is often used for detecting impacted teeth, identifying jaw disorders, and diagnosing other dental issues. It offers a unique perspective that cannot be obtained from traditional intraoral x-rays, which only capture a small portion of the mouth at a time.
The process of capturing a panoramic x-ray is relatively quick and non-invasive. The patient sits still while the x-ray machine rotates around their head, capturing a series of images that are then stitched together to create a single, comprehensive 2D image. This technique ensures that the entire mouth is visualised in a single image, providing a more holistic view of a patient's oral health.
The resulting panoramic image offers a detailed view of the teeth and their roots, the upper and lower jawbones, and the surrounding tissues and structures. This helps dentists and oral surgeons identify issues such as tooth decay, bone loss, cysts, tumours, or fractures that may not be visible on a traditional intraoral x-ray. Therefore, panoramic x-rays play a crucial role in the diagnosis, treatment planning, and overall management of oral health.
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They expose patients to a small dose of ionizing radiation to create pictures of the inside of the body
X-rays are a form of electromagnetic radiation that can pass through the human body to create images of the inside. This process is known as radiography, and the images produced are called radiographs. X-rays are commonly used to check for broken bones, but they can also be used to diagnose other conditions, such as pneumonia or breast cancer. They are also used in cancer treatment to destroy cancerous cells and tumours.
Panoramic X-rays, also known as panorex X-rays, are a type of dental X-ray that captures the entire mouth in a single image, including the teeth, upper and lower jaws, and surrounding tissues. Unlike traditional X-rays, which are intraoral, panoramic X-rays are extraoral, meaning the imaging machine is outside of the patient's mouth. The X-ray tube rotates in a semicircle around the patient's head, starting at one side of the jaw and ending on the other.
Panoramic X-rays produce a two-dimensional, flat image of the curved structure of the mouth and typically provide details of the bones and teeth. They expose patients to a small dose of ionizing radiation, about 0.01 millisieverts, to produce images of the inside of the body. This is slightly more than the radiation exposure from a traditional intraoral X-ray, which is around 0.005 millisieverts. However, the amount of radiation from a panoramic X-ray is still considered safe.
After a panoramic X-ray image is captured, the digital image is immediately transferred to a computer for viewing. Most panoramic X-ray machines integrate with dental imaging software via a TWAIN interface, allowing doctors to easily access and store the images electronically.
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Digital panoramic X-ray machines integrate with dental imaging software via a TWAIN interface
Digital panoramic X-ray machines are now widespread throughout the dental market. They have been around for over two decades and offer many advantages over traditional X-ray machines. For example, they do not require film to be placed inside the patient's mouth, which can be uncomfortable and trigger a patient's gag reflex. Instead, the X-ray tube rotates in a semicircle around the patient's head, capturing a 2D image of the entire mouth, including the teeth, jaws, and surrounding structures.
Digital panoramic X-ray machines are also superior in terms of diagnostics, the environment, and workflow. They produce electronically stored digital files, which doctors can easily access and adjust to aid diagnosis and treatment. The digital format allows dentists to change the contrast, brightness, and darkness of the image, enabling better visualisation of certain structures and tissues. This is not possible with film images.
Most digital panoramic X-ray machines integrate with leading dental imaging software via a TWAIN interface. TWAIN drivers are typically free and available for download from the dental equipment manufacturer's website. Once the appropriate driver is installed, the imaging software "calls" the TWAIN driver, which initiates the acquisition from the dental X-ray machine. From there, the image can be saved into the patient's chart, and the current imaging software functionality can be used to view, enhance, and manage the panoramic images.
When considering the addition of a digital panoramic X-ray machine to a dental practice, it is important to evaluate the specific requirements of each machine, including size, orientation, and patient flow, to ensure that everything can be installed and configured correctly.
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They are a valuable diagnostic tool, allowing dentists to evaluate a patient's overall oral health
Panoramic dental X-rays, also known as "panos", are a valuable diagnostic tool for dentists, providing a comprehensive evaluation of a patient's oral health. Unlike traditional X-rays, such as bitewing X-rays, panoramic X-rays are extraoral, meaning the imaging machine remains outside the patient's mouth. This type of X-ray captures a single image of the entire mouth, including the upper and lower jaws, teeth, TMJ joints, and surrounding tissues and structures.
The panoramic X-ray machine projects a beam through the patient onto a film or detector rotating opposite the X-ray tube, creating a two-dimensional image. This process allows for a broad view of the patient's oral cavity, providing dentists with a "snapshot" of their overall oral health. The image produced can help dentists diagnose various oral health issues, such as impacted teeth, developing third molars, infections, cysts, and tumours.
While panoramic X-rays do not provide the same level of detail as traditional dental X-rays, they offer a unique perspective that aids in the detection of larger concerns. For example, they are effective in evaluating the roots of front teeth and identifying jaw fractures. Additionally, panoramic X-rays expose patients to a lower dose of radiation compared to traditional X-rays, making them a safer option for patients.
The frequency with which an individual should undergo a panoramic X-ray can vary. Generally, it is recommended to have one taken every five to eight years to evaluate the jaws for any pathology or disease that may not be detectable with other types of dental X-rays. However, dentists may recommend panoramic X-rays more frequently if there are specific concerns or as part of a comprehensive dental care treatment plan.
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Frequently asked questions
A "'pano' or panoramic radiography is an X-ray that gives an overall view of the patient's mouth, from nose to chin and ear to ear.
A digital pano X-ray machine rotates around the patient's head, capturing a series of images as it moves. The X-ray lasts between 12-20 seconds.
Digital pano X-rays offer better clarity and are more diagnostic than film X-rays. They are also easier to transfer to specialists and require less radiation than film X-rays.
It is recommended that patients get a full-mouth X-ray every 3-5 years.
Digital pano X-rays are considered safe and are regulated by the Food and Drug Administration (FDA). They expose patients to very minimal radiation—about 0.01 millisieverts, which is less than a short plane flight.
