Module 10 Flashcards
What is the purpose of bitewing radiographs?
To examine the interproximal surfaces of the teeth, the proximal surfaces of restorations, and the alveolar crestal bone
________ is the basic technique used when taking bitewings which contributes to their _______ and _______ value
Paralleling
Accuracy
Diagnostic
The ________ and the ________ are both ________ and ________ teeth are visible in a bitewing radiograph
Crown
Alveolar crest of bone
Maxillary
Mandibular
________ bitewings are used to assess bone levels
Vertical
Vertical bitewings are needed when you suspect ________ disease, root _______, or _______ sequence
Periodontal
Caries
Eruption
Vertical bitewings can be taken when a patient can’t afford an ______
FMX
_______ contacts appear as _______ radiolucent lines between _______ teeth
Opened
Thin
Adjacent
_______ contacts appear _______ over the contact area of an adjacent tooth
Overlapped
Superimposed
When taking bitewings the patient”s _______ should be _______ to the floor
Chin
Parallel
Positioning for horizontal and vertical bitewings is the ______ for ______ and ______
Same
Molars
Pre Molars
For ______ positioning the bite tab is centered over the ______ of the _____ molar
Molar
Occlusal
First
To be considered diagnostic the ______ portion of the film must capture the ______ half of the ______ pre molar, and the distal portion of the film must captures the _______ half of the ______ molar
Mesial Distal 2nd Distal 2nd
For pre molar positioning the _______ is placed over the ______ surface of the _______
Bite tab
Occlusal
Pre molars
To be _______ the ______ half of the _______ must be present in the ______ film
Diagnostic
Distal
Canine/Cuspid
Pre molar
There are _____ difference film sizes available
5
Size ____ is the ______ and used only for ______
0
Smallest
Children
Size 1 are used to take bitewings on ______ and _____ on adults
Children
Anterior PA’s
Size ____ is the ______ common size used for adult bitewings and ______ PA’s
2
Posterior
Size 3 is _______, but is used for _______ bitewings because it is longer and narrower than a Size 2
Uncommon
Premolar/Molar
Size _____ is large and usually only used for occlusal films
4
With ________ angulation, the central ray is directed _______ to the curvature of the arch and _______ through the contact areas of the teeth
Horizontal
Perpendicular
Directly
Too much horizontal angulation results in _______ contacts on the film
Overlapped
With a short PID the _______ angulation is approximately ______ degrees
Vertical
+3
With a long PID the vertical angulation is approximately ______ degrees
+6
Vertical angulation refers to the ________ plane of the PID and requires the _______ ray to be perpendicular to the _______ and directly through the _______ of the teeth for _______ and _______ films
Up and Down Central Film Contacts Molar Pre molar
A _______ degree for vertical angulation requires the PID to be _______ the occlusal plane and to be pointed _______, for a _______ degree the PID is _______ the occlusal plane and is pointed _______
Positive Above Downward Negative Below Upward
Films where the contacts are ______ at the DEJ are considered ________
Closed
Non-Diagnostic
What are the radiographic aids available to stabilize/position bitewing radiographs?
Bitetabs, Film positioning devices (Rinn), and Kwik-Bites
The first thing you should do before taking x-rays on a patient is to _______, because it will determine how many bitewings are taken
Look in their mouth to see how many teeth they have
Most adult patients require ______ bitewings
4
List the 4 bitewings typically taken
Right molar, right pre molar, left pre molar, and left molar
Children usually only need _____ bitewings
2
What is a supplemental film?
Additional film that is taken to complete a diagnostic set of radiographs
The most common need for a supplemental film is _______
Malpositioned teeth
In order to open the contacts on a supplemental film you need to direct the beam to the _______ or _______ of the surface you are trying to open; this will result in _______ contacts in other places
Mesial
Distal
Overlapped
Paralleling technique means the _______ of the tooth is _______ to the film
Long-axis
Parallel
Vertical bitewings may require _______ vertical angulation is the film is _____
Increased
Bent
