Radiography - Chapter 28 - Supplemental Radiographic Technique

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Radiography - Chapter 28 - Supplemental Radiographic Technique

1. avoiding overlap
2. malialigned or crowded teeth
3. altering vertical angulation
4. exposure factors

What are some acceptable variations in technique when taking an xray?

Extend and angle the sensor outward from the linguals of the teeth and more towards the anterior

If you KNOW there is overlap on the teeth you are about to xray how do you compensate?

Endentulous Patient Xray

Canine to premolar overlap

Altering Vertical Angulation

Malaligned Teeth

Molar Overlap

you can place the sensor behind the torus and more central in the mouth to avoid the torus

When taking xrays on patient's with Tori you can still use the parallelling technique if __?

1. Children
2. If the patient cannot bite down

What are some reasons you may use the snaparay?

1. Definitive evaluation method
2. Right-Angle Method
3. Tube shift method (buccal object rule)

Name the methods of localization.

shadow casting principle

The definitive evaluation method is based on the __?

an object positioned farther away from the image receptor will be magnified and less clearly imaged

The definitive evaluation method states that __?

Definitive Evaluation Method

Because intraoral image receptor placement positions the receptor close to the lingual surface of the teeth, those objects on the lingual are more likely to appear distinctly defined on the resultant radiograph.This most closely associates with which localization?

consistently reliable

Although true in principle, the definitive method of localized is not __?

occlusal

Which xray is most commonly used for the right angle method of localization?

Right Angle method

Once identified on a periapical radiograph, a better way to determine whether or not a foreign object or structure, such as an impacted tooth is located on the buccal or the lingual is to take a occlusal radiograph. This method of localization is called?

buccal or lingual

Using the right angle method is allows the radiographer to image the object clearly using an occlusal film and tell whether the object is located on the __ or __ surface.

A: is Initial periapical and B is the Right angle method to determine whether it is on the buccal or lingual of the mouth since the PA doesn't show.

buccal -object rule

The tube shift method is also called the __?

tube shift method

Which is the most versatile method of localization?

2

How may radiographs are needed to apply the tube shift method?

Each of the 2 radiographs used must be exposed using either a different horizontal or different vertical angulation

What is the process for the tube shift method?

whether an object is located onthe buccal or lingual

The tube shift method is a good way to see __?

lingual

The behind the tube shift method is that it the structure or object appears to have moved in the same direction as the horizontal or vertical shift of the tube, then the object is located on the __.

SAME on LINGUAL
OPPOSITE on BUCCAL

SLOB =

tube shift method

The SLOB rule is associated with which method of localization?

disto-oblique periapical radiographs

This method utilizes a tube shift to help image posterior objects such as impacted third molars, especially when the patient cannot tolerate posterior image placement.

Standard vertical and horizontal angulation is altered slightly (no more than 15 degrees) to project posterior objects forward or anteriorly onto the image receptor.

The process for taking a disto-oblique periapical radiograph is __?

Vertical Tube Shift

Horizontal Tube Shift

Disto-oblique Periapical Method

In which localization method do you move the PID back in order to project the 3rd molar or posterior areas forward?

emulsion is on only one side

What is different about duplicating film vs regular film?

Anatomical

___ conditions may require alterations in the radiographic technique.

aligning the horizontal and vertical angulations

A skilled radiographer can apply acceptable variations in ___ and still produce quality radiographs.

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