Chapter 29
A widen PDL, membrane will appear radiolucent wider by how much at the roots of the tooth
0.5.
Type of radiograph shows the pts mouth, jaw, and surrounding structures
3D
Handheld intraoral units are preset to
60 kilov 2ma's
Advantage of digital radiography
Adjust brightness & contrast
Direct digital system for intraoral exposure what do you do if an error occurs
Adjust sensor
Radiopaque peaks are between what on radiographs
Alveolar crest
Dilaceration is what kind of root
Bent root of posterior tooth
When taking a Panoramic of the pt head is positioned too far forward it will appear
Blurred on the anterior teeth
Do patients have to sit or stand during a pano exposure
Both
Does an intensifying screen intensify or decrease exposure of radiation?
Decrease
Cementum is slightly less radiopauge then
Dentin
What type of radiography allows the dentist to display an intro oral radiograph on computer screen without processing the dental film
Digital radiology
Type of apron should be used on the pt during a pano
Double sided w/o w thyroid collar
Assistant's responsibility
Educating patient on importance of radiography
Advantage of radiography
Eliminates dark room and processing equipment
TMJ selection control
Enables 3-second exposure on extraoral radiograph machine
Most radiopaque part of tooth
Enamel
What is the most radiopauge structure of the tooth
Enamel
True or false, direct, digital imaging converge traditional x-rays to digital images
False
Cassette film holders
Flat hard containers or flexible thin sleeves
What is a 3-D curve zone, gentle arches position to achieve the sharpest image
Focal trough
The type of radiographic, unit that incorporates shielding
Handheld intro oral unit
How must extraoral film be loaded?
In a dark room under Safelite conditions
Image method is storage phosphor imaging
Indirect
Digital radiology allows the dentist to take _____ & ______ radiographs
Intraoral and extraoral
Dentin and cementum are slightly
Less radiopauge
Decay not visible on x-ray
Moderate decay
When taking the direct digital technique does a cassette needs to be loaded into the x-ray machine before taking a Pano
No
Ideal outcome from coin test
No indication of coin on processed film
What type of x-ray is the infraorbital foremen usually seen
Pano
How should a patient Frankfurt plane be positioned while taking a Pano?
Parallel to the floor
Inspector of dental radiation equipment
Physicist
How will the patient's head be positioned if the mandibular arch will appear as exaggerated on an upward panoramic?
Position down ward
X-ray output test
Quality assurance test for beam safety for patient
Pt refusal to take xrays
Record refusal on chart and have pt sign it
Indirect digital imaging what should be removed before exposure
Remove image plate
Restoration and decayed area
Restoration has fine even lines on radiograph
How dosalivary stones appear on the radiograph?
Round radiopaque appearance
How do pope stones appear on radiographs?
Round radiopauge areas
Radiographer distance
Should be at least 6 feet from patient or behind a shield
When taking the trans cranial TMJ radiograph, the x-ray is positioned on what on the patient
Side of head
When using 3-D imaging, the image is usually captured in a_______ rotation around the patient's head
Single
If a patient has 25% bone loss at the coronal 1/3 without any tooth loss what stage of periodontitis is that?
Stage two periodontitis
Pano radiography is based on the principle of
Tomography
What can cause a dark radiolucent area above the APICES of the maxillary teeth when taking a Panogram
Tongue not resting on roof of mouth during exposure
Type of radiography being described as x-rays strike film and image recorded on film
Traditional
What does it mean when a tumor of Piers radiopaque on an x-ray?
Tumor denser than original tissue
X-ray of tooth with acrylic crown
Visible prepared tooth structure, but acrylic crown not visible
In digital radiography, is the x-ray sensors typically thicker than the x-ray packets
Yes
Is it considered a HIPP a violation if x-rays are in a location where other patients can view them
Yes
Pano radiographs view what
fractures, bone sinuses, dentition, TMJ, and erupted teeth
Posterior anterior radiograph should be positioned
in front of patient's face
Intraoral digital exposure is placed where
in oral cavity
Extra oral radiographs are used to identify_______ areas of the skull
large
Amalgam restorations compared to cast metal crowns
larger with smoother margins
Maxillary tuberosity, appears radiopauge boney protuberance on the
posterior to last molar
Cephalometric Radiograph is used to access the patients
skeletal profile and structure
