Lecture 6 (9/26)

Question 1

A CBCT will show you a ___ image

Answer 1

3D

Question 2

Traditional radiography we are looking at a ___ picture for a ____ dimensional situation

Answer 2

2D; 3D

Question 3

A static 2-dimensional shadow of a dynamic 3-dimensional situation:

Answer 3

traditional radiograph

Question 4

Type of image that is a snapshot in time:

Answer 4

radiograph

Question 5

Ideally if we are going to do endodontic therapy we want a radiograph that is

Answer 5

exposed the day of treatment (although not 100% necessary)

Question 6

Because a radiograph is only a 2D image, it is subject to:

Answer 6

distoration

Question 7

As long as there is no periapical lesions we need to see ____ mm of bone beyond the apex

If there is a periapical lesion we need to see:

Answer 7

2-3mm; all of the lesion

Question 8

If the radiograph does not appear right, you should consider:

Answer 8

better angulation

Question 9

______ to the area of concern are paramount in helping to determine a correct diagnosis

Answer 9

optimization of image quality and relationship

Question 10

Optimization of image quality and relationship to the area of concern are paramount in helping to determine a correct:

Answer 10

diagnosis

Question 11

If your radiograph was taken before the patient had symptoms you should:

Answer 11

take a new radiograph

Question 12

If your radiograph was taken before the patient had some operative work done you should:

Answer 12

take a new radiograph

Question 13

Old radiographs can be very useful, such as:

Answer 13

viewing changes that occur

Question 14

Diagnostic radiographs must be ___ and include all of the areas of concern in proper orientation without cone cuts, overlapping, elongation or foreshortening. Must include all the tooth and at least ____ mm apical to the end of the root

Answer 14

distinct; 5mm

Question 15

Diagnostic radiographs must be distinct and include:

Answer 15

all areas of concern and proper orientation

Question 16

What diagnostic radiographs are required for all posterior teeth?

Answer 16

2 P/A radiographs (straight on and 20 degree H. angled)

Question 17

When taking diagnostic radiographs, its always a good idea to take ____ to help ____

Answer 17

multiple angles; guess the 3D anatomy

Question 18

Are your radiographs current? Think of all the ____ of a ___ pulpal-periodontal environment to a ____ state. You will see most of these stages.

Answer 18

stages; healthy; diseased

Question 19

What does a 5 year old sloppy x-ray tell you?

Answer 19

To take current radiographs

Question 20

A current radiograph is one that has been taken:

Answer 20

within 1-2 months, unless something has changed

Question 21

NEVER EVER EVER try to make your diagnosis:

Answer 21

from 1 radiograph alone

Question 22

The radiograph is a _____ that helps us arrive at a ____. But it is not _____.

Answer 22

tool; diagnosis; NOT THE ONLY TOOL

Question 23

Why must a radiograph be current?

Answer 23

people change and situations change

Question 24

A drop-ff perio pocket or a DST could indicate:

Answer 24

a new vertical root fracture

Question 25

Do radiographs have historical value?

Answer 25

Yes- allows you to visualize change over time

Question 26

A series of radiographs over time with similar angulation and exposure can be very helpful when following:

Answer 26

a new, developing, or healing lesion

Question 27

Benefits of endodontic radiology include: (4)

Answer 27

1. Suggests LEOs & other pathosis 2. May indicate unseen canals & proximal anatomy 3. Largely locates most curvatures 4. Assists in working-length determination

Question 28

Canals don't calcify from the ___ to the ____, its the other way around

Answer 28

apex to the chamber

Question 29

If a canal disappears this may be called a _____ meaning the canal has _____. This is significant for ______ You probably want to ____ these cases

Answer 29

fast break; split; lower 1st premolars; refer

Question 30

Bullseye suggests that:

Answer 30

the root takes a 90 degree curve - very difficult to treat theses cases! REFER REFER REFER

Question 31

Mesio-distal curvatures are ____ to see Buccal-lingual curvatures are ____ to see (on radiographic images)

Answer 31

Easy; harder

Question 32

Benefits of endodontic radiology: Suggests ____ & other _____

Answer 32

LEOs & other pathosis

Question 33

Benefits of endodontic radiology: May indicate ____ & ____

Answer 33

unseen canals & proximal anatomy

Question 34

Benefits of endodontic radiology: Largely locates most:

Answer 34

curvatures

Question 35

Benefits of endodontic radiology: Assists in _____ determination

Answer 35

working-length

Question 36

Changes of horizontal angulation = ______

Answer 36

"SLOB" Rule

Question 37

Modern diagnostic digital radiography is ______ when appropriate _____ are emplyed

Answer 37

without risk; radiation hygiene techniques

Question 38

The lingual canal will move the ____ direction as the shift shot. The buccal canal will move the ____ way of the shift shot

Answer 38

same; opposite (Line up fingers in front of face exercise)

Question 39

There should be ____ about x-ray safety for adequate diagnostic/Tx purposes

Answer 39

no question

Question 40

Radiographs help develop a:

Answer 40

mental image

Question 41

Risks of endodontic radiology: Many opportunities exist for ___ and ___

Answer 41

confusion & inauguration interpretation

Question 42

Risks of endodontic radiology: Results can be _____ leading to ____.

Answer 42

inaccurate diagnosis; incorrect treatment

Question 43

A risk of endodontic radiology is that results can be inaccurate leading to incorrect treatment, because of this, its extremely important to:

Answer 43

avoid making diagnosis solely off of radiograph

Question 44

A risk of endodontic radiology is that results can be inaccurate leading to incorrect treatment, because of this, its extremely important to evaluate for: (3)

Answer 44

1. artifacts 2. poor resolution 3. wrong angulation

Question 45

The 3 biggest risks of endodontic radiology include:

Answer 45

1. attempting to diagnose from radiographs alone 2. seeing something on the film that is not there 3. failing to see something on the film that is there

Question 46

Unless you like spending time and money in court: (its a saying)

Answer 46

Errors of commission = Errors of omission

Question 47

______ curvatures are more easily noticed than ____

Answer 47

mesio-distal; bucco-lingual

Question 48

When you see a ___ on an image, you are seeing a facial or lingual root tip "on end". You don't know if it curves to the facial or the lingual (good opportunity to refer)

Answer 48

bullseye

Question 49

When you see a bullseye on an image, you are seeing a ____ or _____ _____; you don't know if it curves to the ____ or ____

Answer 49

facial or lingual root tip; facial or lingual

Question 50

When you see a bullseye on an image, its a good idea to:

Answer 50

refer

Question 51

This image shows an example of a:

Answer 51

bullseye

Question 52

This 4th (ditto-lingual) root is seen most frequently in _____ & ____ populations

Answer 52

Native American; Asian

Question 53

What kind of root is seen most frequently in Native American and Asian populations?

Answer 53

4th disto-lingual root

Question 54

Often the disto-lingual root and canal curve sharply to the _____ to present this classic appearance

Answer 54

facial

Question 55

A distal shift shot on #30 would make the ML root appear to move:

Answer 55

distal to the MB root

Question 56

Which of the following is not necessary for quality diagnostic routine endodontic films?

Answer 56

panorex