Dental X-rays (radiographs) are images of the teeth that a dentist uses to evaluate oral health. They are made with low levels of radiation to capture images of the interior of teeth and gums. This can help a dentist to identify problems, like cavities, tooth decay, and impacted teeth.
Dentistry students at the University of Groningen are provided with a digital handbook for their radiology practicals. Part of that handbook is a series of models, which I was asked to make. Each model depicts the positioning for an x-ray. These x-rays show details of one area of the mouth.
The positioner depicted in the models below is positioned for a pericapical x-ray of the teeth of the upper jaw. It shows the whole tooth: from crown to beyond the rooth where the tooth attaches into the jaw. Each periapical x-ray shows all teeth in one portion of either the upper of lower jaw. Periapical x-rays detect any unusual changes in the root and surrounding bone structures.
This models below depict the positioning for a bite-wing x-ray. These x-rays show details of the upper and lower teeth in one area of the mouth. Each bite-wing shows a tooth from its crown (the exposed surface) to the level of the supporting bone. Bite-wing x-rays detect decay between teeth and changes in the thickness of bone caused by gum disease. Bite wing x-rays can also help determine the proper fit of a crown (a cap that completely encircles a tooth) or other restorations (eg, bridges). It can also see any wear or breakdown of dental fillings.
View all of the models embedded in the digital handbook here.