A proper x-ray machine consists of two sides. An x-ray tube is mounted on one side and the x-ray film or a detector on the opposite side. The patient's head is positioned with chin, forehead and side rests. The patient may be provided with a bite blocker to open the mouth slightly for a clearer picture.
How Does the Procedure of the Dental Equipment Work?
X-rays are a form of radiation like light or radio waves. X-rays pass through most objects, including the body. Once it is carefully aimed at the part of the body being examined, an x-ray machine produces a small burst of radiation that passes through the body, recording an image on photographic film or a special detector. A panoramic x-ray does not provide precise and detailed information about each individual tooth or soft tissues, such as the muscles. It is generally used as an initial evaluation of the bones and teeth. Because your mouth is curved, the panoramic x-ray can sometimes create a slightly blurry image where accurate measurements of your teeth and jaw are not possible. If your dentist or surgeon needs more information, a computed tomography (CT) scan or magnetic resonance imaging (MRI) may be ordered. This may include Dental Cone Beam CT, an imaging exam developed specifically for this part of the body. During a panoramic x-ray examination, 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 side.
Rather than relying on film placed inside the mouth, a panoramic x-ray machine projects a beam through the patient onto film or a detector rotating opposite the x-ray tube. Until recently, dental x rays unit for sale were maintained on large film sheets (much like a large photographic negative). Today, most images are digital files that are stored electronically. These stored images are easily accessible and are frequently compared to current x-ray images for diagnosis and disease management. The digital format also allows the dentist to adjust and change the contrast, brightness and darkness of the image for better visualization of certain structures and tissues. Images on film cannot be adjusted or changed.
How is the procedure performed?
First, you will be situated in the center of the unit where the technician will carefully position and secure your head. The unit can be adjusted to accommodate a patient standing or sitting in a wheelchair. A bite-blocker is then placed in your mouth to ensure proper alignment of the teeth. Correct placement of the teeth and head is important for obtaining a clear image. You will be asked to remain very still while the rotating arm travels in a semicircle around the perimeter of your head and the images are being taken. This can typically last between 12 to 20 seconds.
