Chapter 7

Question 1

What are the types of Intraoral Projections

Answer 1

• Periapical Radiography
• Paralleling Technique
• Bisecting Angle Technique
• Bitewing Radiography
• Occlusal Radiography
• Full-Mouth Radiographic Series

Question 2

Shows the entire length of a tooth, from crown to apex.

Answer 2

Periapical Radiography

Question 3

Used to assess: Caries (tooth decay)

Answer 3

Periapical Radiography

Question 4

Used to assess: Periapical inflammation (infection at the root tip)

Answer 4

Periapical Radiography

Question 5

Used to assess: Trauma (injuries to teeth and bone)

Answer 5

Periapical Radiography

Question 6

Used to assess: Periodontal bone loss (gum disease)

Answer 6

Periapical Radiography

Question 7

Receptor is positioned parallel to the tooth’s long axis.

Answer 7

Paralleling Technique

Question 8

Central x-ray beam is perpendicular to both tooth and receptor.

Answer 8

Paralleling Technique

Question 9

Minimizes distortion for a more accurate image.

Answer 9

Paralleling Technique

Question 10

Used when paralleling is difficult due to anatomy.

Answer 10

Bisecting Angle Technique

Question 11

Receptor is positioned as close to the lingual surface as possible.

Answer 11

Bisecting Angle Technique

Question 12

Central x-ray beam is perpendicular to an imaginary line bisecting the angle between the tooth and receptor.

Answer 12

Bisecting Angle Technique

Question 13

Focuses on the crowns of teeth and the adjacent alveolar crests.

Answer 13

Bitewing Radiography

Question 14

Primarily used to detect: Interproximal caries (decay between teeth)

Answer 14

Bitewing Radiography

Question 15

Primarily used to detect: Bone loss in the interdental areas

Answer 15

Bitewing Radiography

Question 16

Produces a larger view of a dental arch, including the palate or floor of the mouth.

Answer 16

Occlusal Radiography

Question 17

Useful for locating:
 Unerupted teeth
 Foreign bodies
 Disease
 Fractures

Answer 17

Occlusal Radiography

Question 18

Consists of periapical and bitewing projections.

Answer 18

Full-Mouth Radiographic Series

Question 19

Provides valuable diagnostic information.

Answer 19

Full-Mouth Radiographic Series

Question 20

Radiographs should capture the entire area being examined.

Answer 20

Complete Areas of Interest

Question 21

Periapical views should include the full length of the roots and surrounding bone.

Answer 21

Complete Areas of Interest

Question 22

Radiographs should not capture the entire area being examined.

True or False

Answer 22

False (should)

Question 23

Periapical views should include the half length of the roots and surrounding bone.

True or False

Answer 23

False (full length)

Question 24

Distortion caused by improper beam angulation should be minimized.

Answer 24

Minimal Distortion

Question 25

Ensures accurate interpretation of the images.

Answer 25

Minimal Distortion

Question 26

Distortion caused by proper beam angulation should be minimized. True or False

Answer 26

False (improper)

Question 27

Radiographs should have appropriate density (blackness) and contrast (difference between light and dark areas).

Answer 27

Optimal Density and Contrast

Question 28

Facilitates clear visualization of structures.

Answer 28

Optimal Density and Contrast

Question 29

Periapical Radiography: What are the Diagnostic Objectives

Answer 29

- Caries (tooth decay) - Periapical inflammation (infection at the tip of the root) o Trauma (injuries to teeth and bone) - Periodontal bone loss (gum disease) - Root morphology (shape and structure of the root) - Implant osseointegration (bone growth around implants) o Unerupted and impacted teeth - Root resorption (loss of tooth structure) - Pulp morphology (shape and structure of the pulp) - Determine endodontic instrumentation length

Question 30

What are the 2 Radiographic Techniques

Answer 30

Paralleling Technique and Bisecting Technique

Question 31

Right-angle, Long-cone

Answer 31

Paralleling Technique

Question 32

Receptor parallel to tooth long axis

Answer 32

Paralleling Technique

Question 33

Central ray perpendicular to tooth and receptor

Answer 33

Paralleling Technique

Question 34

Minimizes distortion

Answer 34

Paralleling Technique

Question 35

Requires receptor holder

Answer 35

Paralleling Technique

Question 36

Receptor as close to lingual surface as possible

Answer 36

Bisecting Angle Technique

Question 37

Central ray perpendicular to bisector of angle between tooth and receptor

Answer 37

Bisecting Angle Technique

Question 38

May be useful when paralleling is difficult

Answer 38

Bisecting Angle Technique

Question 39

Stabilize receptor to a bite block

Answer 39

Receptor-Holding Instruments (Paralleling Technique)

Question 40

Ensure parallel orientation of receptor and tooth

Answer 40

Receptor-Holding Instruments (Paralleling Technique)

Question 41

Parallel to teeth and deep into vestibule

Answer 41

Receptor Placement (Paralleling Technique)

Question 42

Consider anatomic variations (shallow palate, tori)

Answer 42

Receptor Placement (Paralleling Technique)

Question 43

Aiming cylinder aligned with aiming ring

Answer 43

Angulation of the Tube Head (Paralleling Technique)

Question 44

Horizontal angulation influences crown overlap

Answer 44

Angulation of the Tube Head (Paralleling Technique)