Technological advances mean that dentists and orthodontists now can see teeth a lot better than before. Dr. Menachem Roth of Carvalho and Roth Orthodontics in Massachusetts talks here about a relatively new scanner that depicts the mouth in 3-D.
Traditionally, orthodontists will use two types of x-rays in order to generate a treatment plan: They would most likely make use of a panoramic x-ray, which gives a view of all 32 teeth in the mouth. Or they would use the second option, which would be a cephalometric x-ray, that gives a side view of the head to look at the jaw positions and the angulation of the teeth.
Both of these x-rays are two-dimensional representations of our head, which is obviously 3-D. But in certain instances, particularly if there is a tooth that is impacted or there are concerns over a potential pathology, the orthodontist may recommend a 3-D cone beam scan.
What It Is
Essentially, this is a 3-D CT scan of the jaws, which allows the orthodontist to view the teeth and jaws in three dimensions. It provides a more accurate view of where the teeth are in space, how close the teeth may be to the roots of other teeth, or where various nerves and sinuses may be located when preparing for various dental procedures.
Cone beam CT scanners are becoming more prevalent in private offices, although with traditional orthodontic treatment, many times this type of detail is not necessary. The scan itself takes 20 to 40 seconds and is similar to other types of dental x-rays. You do not need to be lying flat as it is done in a sitting upright position and there is no discomfort from the scan.
This is pretty much the gold standard in terms of x-rays if you are looking for information concerning where a particular tooth is, or to see the TMJ, or temporomandibular joint. The cone beam scanner is particularly good in giving a lot of detail about the joints.
In the United States, cone beam scanners have been available since 2001, although they are pricey and not all dental offices have them. But they provide a reliable way to see parts of the teeth that regular x-rays can miss, providing superior 3-D dental images quickly and efficiently, with easy patient positioning and quality results.
The information in the article is not intended to substitute for the medical expertise and advice of your healthcare provider. We encourage you to discuss any decisions about treatment or care with an appropriate healthcare provider.
