WK 2, Extraoral Radiography Practice Flashcards

Flashcards based on lecture notes covering extraoral radiographic examinations, including Panoramic Radiography (OPG), Cephalometric Radiography, and CBCT.

Panoramic Radiography (OPG)

An extraoral radiographic examination used for a wide view of the maxilla and mandible on a single projection.

Orthopantomogram (OPG)

Another name for panoramic radiography, used to evaluate dentition, supporting structures, and detect disease in the jaws.

Rotation Centre

The pivotal point which the receptor and X-Ray tube head rotate on during a panoramic procedure.

Focal Trough

A 3D curved zone where the teeth and jaws are captured sharply while structures outside it appear blurred or distorted.

Midsagittal Plane

An imaginary plane perpendicular to the floor that divides the patient's face into right and left sides.

Frankfurt Plane

An imaginary plane parallel to the floor that passes through the top of the ear canal and the bottom of the eye socket.

Palatoglossal air space

The area that causes radiolucency on an image if the patient does not keep their tongue against the roof of the mouth.

Anterior region

The specific area of the dental arches that is especially sensitive to positioning within the focal trough.

Extraoral receptor

A receptor positioned outside the mouth, used in techniques like OPG and CBCT.

Dental caries

A condition for which panoramic radiography should not be used as a primary diagnostic tool due to lack of sharpness.

Impacted teeth

A type of dental condition evaluated using panoramic radiography.

Eruption patterns

One of the aspects of dental development evaluated during an OPG examination.

Guiding lights

Tools used during the procedure to help position the patient's head correctly.

Bite block

A device the patient bites with their upper and lower incisors to ensure correct positioning.

Disposable coverslip

A single-use cover applied to the bite block for hygiene before patient use.

Head positioners

Equipment used to support and stabilize the patient's head during the radiographic procedure.

Cephalometric Radiography

A technique that produces lateral or frontal views of the entire head, mainly used in orthodontics.

Craniofacial complex

The structural area where dental and skeletal relationships are evaluated using cephalometric radiography.

Cone-beam Computed Tomography (CBCT)

A radiographic technique that offers highly detailed 3D images of bone and soft tissue structures.

Implant planning

A clinical application for CBCT that requires detailed visualization of bone structures.

Visualisation of abnormal teeth

A specific application for using Cone-beam Computed Tomography (CBCT) in dental assessment.

Orthodontic assessments

A shared application for both cephalometric radiography and Cone-beam Computed Tomography (CBCT).

Complex surgeries

Surgical procedures that utilize CBCT for detailed planning and visualization.

Lateral view

A perspective produced by cephalometric radiography showing the side of the head.

Frontal view

A perspective produced by cephalometric radiography showing the front of the entire head.

Trauma

Physical injury to the jaws that can be detected through panoramic radiography.

Radiolucency

The darkness on a radiograph caused by air spaces, such as when the tongue is not properly positioned.

Control panel

The interface used by the technician to adjust settings before taking the radiograph.

Growth and Development

Physiological changes in the jaws and teeth that are monitored via OPG.

Intraoral images

Radiographs taken inside the mouth that provide sharper detail than panoramic images.