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Flashcards in Radiographs Deck (47):
1

In order to establish a diagnosis and develop treatment decision, information is needed from the ______ examination, ______ examination, and _______ history

- clinical
-radiographic
-patient

2

When examining teeth clinically a _____ _____ is used for caries examination

set sequence starting w/ #1 to #32

3

During a clinical exam an ______ is used as a tactile device to detect the presence of any _______ changes (eg catches or tug-back) in pits, fissures, and grooves of the teeth as well as break in the enamel of smooth surface lesions

-explorer
-consistency

4

_______ ____ can be sued to dry teeth and remove debri in order to allow for a better visual examination

compressed air

5

______ is a way to detect caries on anterior teeth that involves passing light thru the tooth

trans-illumination

6

During trans-illumination healthy enamel allows the passage of light while ____ ____ does not

dental caries

7

Carious lesions appear as a _____ on a dental radiograph

radiolucency

8

A radiolucent structure permits the passage of the x-ray beam and appear ____ or ___ on a dental radiograph

-dark
-black

9

The degree of radiolucency seen on a radiograph is det. by the _____ and _____ of destruction as a result of the caries process

-extent
-severity

10

Caries is always _____ advanced clinically than what is seen on a radiograph

further

11

What is the radiograph of choice for examination of dental caries bc it shows the crowns of upper and lower teeth on the same film?

bite-wing

12

What type of radiograph can be used to detect inter-proximal caries?

periapical radiograph

13

What criteria must be met for a bite wing to be considered diagnostic for the eval. of dental caries?

- exposure and processing
-open contacts
-occlusal plane (horizontally along midline)
-premolar placement ( distal contacts of max and mand canines)
-molar placement (centered over 2nd molar)
-free of errors

14

Caries found on smooth surfaces btw 2 teeth is termed _______ caries

interproximal

15

Interproximal caries is seen at or just below (apical) to the _____ pt

contact

16

_____ caries is less that 1/2 the thickness of enamel

incipient

17

____ caries is greater than 1/2 thickness of enamel and does NOT involve the DEJ

moderate

18

____ caries involves enamel and the DEJ. Less than 1/2 distance to the pulp cavity

advanced

19

____ caries; dentin penetrated more than 1/2 the distance to the pulp cavity

severe caries

20

Occlusal caries is caries that involves the ____ and ____ of the posterior teeth

-pit
-fissures

21

Occlusal caries is not seen on a radiograph until there is involvement of the _____

DEJ

22

____ occlusal caries cannot be seen on a dental radiograph and is detected clinically w/ explorer

incipient

23

____ occlusal caries extends into dentin and is seen as a very thin radiolucent line under the enamel

moderate

24

_____ occlusal caries extends into dentin and is seen as a large radiolucency under the enamel of the occlusal surface

severe

25

____ caries involves the buccal surface of the tooth and _____ caries involves the lingual tooth surface

- buccal
-lingual

26

Buccal or lingual caries appears as a small, _____ radiolucency and clinical exam in needed to determine location

circular

27

_____ _____ involves the roots of teeth and involves the cementum and dentin just below cervical region of tooth. No involvement of enamel is seen

root caries

28

Root surface caries is detected on exposed root surfaces as cupped out or crater shaped radiolucency just below the ____

CEJ

29

Secondary or ____ caries occurs adj to pre-existing restoration bc of inadequate cavity prep, defective margins, ore incomplete removal of caries before placing restoration

recurrent

30

On a radiograph recurrent caries appears as a radiolucency just ______

beneath a restoration (interproximal margins)

31

_____ caries is advance and severe caries which affects numerous teeth in dentition (dec salivary flow or poor diet)

rampant

32

_____ caries is rampant caries resulting from xerostomia caused by head and neck radiation therapy

radiation

33

What are the techniques needed for evaluation of dental caries by interpretation of dental radiographs?

- mounted in opaque film mounts
- viewed in room w/ subdued lighting free of distractions
- illuminator or view box
-harsh light masked to reduce glare
-pocket sized magnifying glass
-viewed w/ patient present

34

Bite wings must be free of ______ contacts caused by horizontal angulation

overlapped
- cannot determine if interproximal caries

35

_____ ___, abrasion, ____ and cervical burnout may resemble dental caries on a radiograph

restorative materials
-attrition
-cervical burnout

36

Both the clinical exam and interpretation of radiographs are mutually contributory aids in making the diagnosis of _______ ____

dental caries

37

_______ _____ such as composites may appear as radiolucent and resemble dental caries but differ bc they have a well-defined, smooth outline

restorative materials

38

______ or wearing away tooth structure from the friction of a foreign object such as a tooth brush. Appears as a well defined horizontal radiolucency along the cervical region of a tooth

abrasion

39

____ or mechanical wearing down of teeth can be seen on the incisal or occlusal surfaces of teeth. When worn into dentin it appears as concavities that may resemble caries but clinical exam tells them apart

attrition

40

______ _____ is a radiolucent artifact and appears as a collar or wedge shaped radiolucency on the mesial and distal root surfaces near the CEJ of tooth (seen bc diff densities of adj tissues)

Cervical burnout

41

GV Black Classificatio of Carious lesions

Class I-VI

42

Occlusal areas and buccal or lingual pits

Class I

43

Posterior interproximal

Class II

44

Anterior interproximal

Class III

45

Anterior Interproximal including incisal corner

Class IV

46

Cervical 1/3 at facial or lingual

Class V

47

Cusp tip

Class VI