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Endodontics > Lecture 6 (9/26) > Flashcards

Lecture 6 (9/26) Flashcards

1
Q

A CBCT will show you a ___ image

A

3D

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2
Q

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

A

2D; 3D

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3
Q

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

A

traditional radiograph

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4
Q

Type of image that is a snapshot in time:

A

radiograph

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5
Q

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

A

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

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6
Q

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

A

distoration

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7
Q

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:

A

2-3mm; all of the lesion

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8
Q

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

A

better angulation

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9
Q

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

A

optimization of image quality and relationship

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10
Q

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

A

diagnosis

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11
Q

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

A

take a new radiograph

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12
Q

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

A

take a new radiograph

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13
Q

Old radiographs can be very useful, such as:

A

viewing changes that occur

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14
Q

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

A

distinct; 5mm

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15
Q

Diagnostic radiographs must be distinct and include:

A

all areas of concern and proper orientation

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16
Q

What diagnostic radiographs are required for all posterior teeth?

A

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

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17
Q

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

A

multiple angles; guess the 3D anatomy

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18
Q

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

A

stages; healthy; diseased

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19
Q

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

A

To take current radiographs

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20
Q

A current radiograph is one that has been taken:

A

within 1-2 months, unless something has changed

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21
Q

NEVER EVER EVER try to make your diagnosis:

A

from 1 radiograph alone

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22
Q

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

A

tool; diagnosis; NOT THE ONLY TOOL

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23
Q

Why must a radiograph be current?

A

people change and situations change

24
Q

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

A

a new vertical root fracture

25
Q

Do radiographs have historical value?

A

Yes- allows you to visualize change over time

26
Q

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

A

a new, developing, or healing lesion

27
Q

Benefits of endodontic radiology include: (4)

A
  1. Suggests LEOs & other pathosis
  2. May indicate unseen canals & proximal anatomy
  3. Largely locates most curvatures
  4. Assists in working-length determination
28
Q

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

A

apex to the chamber

29
Q

If a canal disappears this may be called a _____ meaning the canal has _____.

This is significant for ______

You probably want to ____ these cases

A

fast break; split; lower 1st premolars; refer

30
Q

Bullseye suggests that:

A

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

31
Q

Mesio-distal curvatures are ____ to see
Buccal-lingual curvatures are ____ to see

(on radiographic images)

A

Easy; harder

32
Q

Benefits of endodontic radiology:

Suggests ____ & other _____

A

LEOs & other pathosis

33
Q

Benefits of endodontic radiology:

May indicate ____ & ____

A

unseen canals & proximal anatomy

34
Q

Benefits of endodontic radiology:

Largely locates most:

A

curvatures

35
Q

Benefits of endodontic radiology:

Assists in _____ determination

A

working-length

36
Q

Changes of horizontal angulation = ______

A

“SLOB” Rule

37
Q

Modern diagnostic digital radiography is ______ when appropriate _____ are emplyed

A

without risk; radiation hygiene techniques

38
Q

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

A

same; opposite

(Line up fingers in front of face exercise)

39
Q

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

A

no question

40
Q

Radiographs help develop a:

A

mental image

41
Q

Risks of endodontic radiology:

Many opportunities exist for ___ and ___

A

confusion & inauguration interpretation

42
Q

Risks of endodontic radiology:

Results can be _____ leading to ____.

A

inaccurate diagnosis; incorrect treatment

43
Q

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

A

avoid making diagnosis solely off of radiograph

44
Q

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)

A
  1. artifacts
  2. poor resolution
  3. wrong angulation
45
Q

The 3 biggest risks of endodontic radiology include:

A
  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
46
Q

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

A

Errors of commission = Errors of omission

47
Q

______ curvatures are more easily noticed than ____

A

mesio-distal; bucco-lingual

48
Q

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)

A

bullseye

49
Q

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

A

facial or lingual root tip; facial or lingual

50
Q

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

A

refer

51
Q

This image shows an example of a:

A

bullseye

52
Q

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

A

Native American; Asian

53
Q

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

A

4th disto-lingual root

54
Q

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

A

facial

55
Q

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

A

distal to the MB root

56
Q

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

A

panorex

57
Q
A

Endodontics (19 decks)

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