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?
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. Definitive evaluation method
2. Right-Angle Method
3. Tube shift method (buccal object rule)
Name the methods of localization.
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?
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.
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 __?
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 __.
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 __?
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?