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1102 Rad > Chpt 21- Bite Wing Techniques > Flashcards

Chpt 21- Bite Wing Techniques Flashcards

1
Q

What does a bit wing image include?

A

the crowns of the maxillary and mandibular teeth, inter proximal areas and areas of the crestal bone

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2
Q

what are bing wing images used to detect?

A

interproximal caries and crestal bone levels

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3
Q

define interproximal

A

between two adjacent surfaces

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4
Q

define interproximal examination

A

intra oral examination used to inspect the crowns of both maxillary and mandibular teeth on a single image

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5
Q

define bite wing receptor

A

type of receptor used in interproximal examination the wing wing receptor has a wing or tab that the patient bites on to stabilize the receptor

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6
Q

define alveolar bone

A

bone that supports and encases the roots of teeth

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7
Q

define crestal bone

A

coronal portion of alveolar bone found between teeth

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8
Q

define contact areas

A

the area of a tooth that touches an adjacent the area where adjacent tooth surfaces touch eachother

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9
Q

define horizontal bite wing

A

the bite wing receptor is places in the mouth with the long portion of the receptor in a horizontal direction

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10
Q

define opened contact

A

on a dental image opened contact appear as thin radiolucent lines between adjacent tooth surfaces

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11
Q

define overlapped contacts

A

on a dental image the area where the contact area of one tooth is superimposed over the contact area of an adjacent tooth

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12
Q

define vertical bite wing

A

the bite wing recpetor is places in the mouth with the long portion of the receptor in a vertical direction

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13
Q

Fill in the blank:
The receptor is placed in the mouth ______ to the crowns of both maxillary and mandibular teeth

A

parallel

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14
Q

what vertical angulation should be used when taking a bite wing image

A

+ 10 deg

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15
Q

what is used to stabilize the receptor?

A

a beam alignment device or bite wing tab

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16
Q

how is a beam alignment device used?

A

to position an intra oral receptor in the mouth and maintain the receptor in position during the imaging procedure

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17
Q

what is an example of a beam alignment device?

A

Rinn xcp extension cone paralleling system

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18
Q

what is recommended for bite wing projections

A

Rinn XCP system

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19
Q

what is used to limit amount of raditation exposure

A

collimator

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20
Q

What are 3 sizes of receptors

A

0,2,3

21
Q

what is size 0 used for?

A

posterior teeth of children with primary dentition Always placed in horizontal postion

22
Q

what is a size 2 receptor used for and what position

A

posterior teeeth in older children and adults, can be placed vertically and horizontal

23
Q

what is a size 3 receptor used for? and what position

A

longer and narrower only used for bite wing exposures in horizontal position

24
Q

which receptor is least recommended

A

size 3

25
Q

how can angulation be utilized

A

by moving the pid in both vertical or horizontal planes

26
Q

what is horizontal angulation

A

positioning of the central ray in a horizontal or side to side plane

27
Q

what does correct horizontal angulation look like

A

the dental ray is directed perpendicular to the curvature of the arch and through the contact areas of the teeth
contact areas are opened and examinations for caries can be completed

28
Q

what does incorrect horizontal angulation look like

A

results in overlapped contact areas and cannot be used in examination may require a retake

29
Q

what is vertical angulation

A

positioning the pid in a vertical or up and down plane, may be positive or negative

30
Q

what does it mean to have a positive angulation

A

if the PID is positioned above the occlusal plane and the central ray is directed down

31
Q

what does a negative angulation mean

A

if the PID is positioned below the occlusal plane and the central ray is directed upward

32
Q

Rules for Bite Wing Techniques
how must the receptor be placed?

A

to cover the prescribed area of teeth

33
Q

Rules for Bite Wing Techniques
How must the bite wing receptor be positioned in order to cover the crowns of both the maxillary and mandibular teeth?

A

parallel

34
Q

Rules for Bite Wing Techniques
The receptor must be ______ when the patient bites on the bite wing tab or the bite block of the beam alignment device

A

stabalized

35
Q

Rules for Bite Wing Techniques
What type of angulation is it when a bite wing tab is used with film or PSP sensors having the central ray of the x ray beam directed at +10 deg.

A

vertical angulation

36
Q

Rules for Bite Wing Techniques
what must the x ray beam be directed through in horizontal angulation

A

contact areas between teeth

37
Q

Rules for Bite Wing Techniques
Why must the x ray beam be centered on the receptor in bite wing images

A

to ensure all areas of the receptor is are exposed

38
Q

what happens if the x ray beam is not centered on the receptor

A

only a partial image could be produced

39
Q

When taking bite wing images you should position the patient head so that the maxillary arch is ______ to the floor and the midsagital (midline) is _________ to the floor

A
  1. parallel
  2. perpendicular
40
Q

what protective equipment should go on the patient before taking x rays

A

led apron with a thyroid collar

41
Q

what should the patient remove before having x ray images taken

A

eyeglasses and all objects from the mouth (dentures, retainers and gum etc)

42
Q

what is the exposure sequence for receptor placements

A
  1. expose the premolar bite wing receptor first
  2. expose the molar bite wing receptor next
    3, repeat on opposite sides
43
Q

What must the premolar bite wing always include

A

the distal of the canine (cuspid)

44
Q

what must a molar bite wing always include

A

the distal of the second pre molar ( bicuspid)

45
Q

What are vertical bite wings used for

A

to examine the level of alveolar bone

46
Q

What is edentulous spaces

A

no teeth

47
Q

what may be to be done to support edentulous spaces during x rays

A

placing a cotton roll in the area of the missing tooth to support the bite wing tab or beam alignment device

48
Q

what may you need to do if the paitent has tori

A

place the receptor between the tori and the tongue

1102 Rad (4 decks)

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