RADIAÇÕES

Question 1

What is radiation?

Answer 1

Radiation is the emission of energy as electromagnetic waves or as moving subatomic particles.

Question 2

True or False: All radiation is harmful to biological tissues.

Answer 2

False

Question 3

What are the two main types of radiation?

Answer 3

Ionizing and non-ionizing radiation.

Question 4

Fill in the blank: Ionizing radiation has enough energy to ______ electrons from atoms.

Answer 4

remove

Question 5

What is a common source of ionizing radiation in dental radiography?

Answer 5

X-rays

Question 6

What is the primary biological effect of ionizing radiation?

Answer 6

It can cause damage to DNA and other cellular structures.

Question 7

True or False: Non-ionizing radiation can cause significant biological damage.

Answer 7

False

Question 8

What are the potential effects of radiation exposure?

Answer 8

Acute radiation syndrome, cancer, and genetic mutations.

Question 9

What is the purpose of radiographic processing?

Answer 9

To convert the latent image on the film into a visible image.

Question 10

List the steps involved in radiographic processing.

Answer 10

Development, rinsing, fixing, washing, and drying.

Question 11

What is the role of the developer in film processing?

Answer 11

To reduce exposed silver halide crystals to metallic silver.

Question 12

True or False: The fixer removes unexposed silver halide crystals from the film.

Answer 12

True

Question 13

What is the purpose of the rinse step in processing?

Answer 13

To stop the development process and remove excess developer.

Question 14

What is the significance of the radiographic density?

Answer 14

It refers to the degree of darkness on the radiograph.

Question 15

What factors can affect radiographic density?

Answer 15

Exposure time, film speed, and processing conditions.

Question 16

Fill in the blank: Radiographic contrast is the difference in ______ between adjacent areas on a radiograph.

Answer 16

density

Question 17

What is a common intraoral radiographic technique?

Answer 17

Periapical radiography.

Question 18

True or False: Bitewing radiographs are used to view the interproximal areas of teeth.

Answer 18

True

Question 19

What is the purpose of using a lead apron during radiographic procedures?

Answer 19

To protect the patient’s body from scatter radiation.

Question 20

What does the term ‘collimation’ refer to in radiography?

Answer 20

The process of restricting the size and shape of the x-ray beam.

Question 21

What is the function of the x-ray tube in radiography?

Answer 21

To generate x-rays by accelerating electrons and directing them toward a target.

Question 22

List two types of intraoral radiographic techniques.

Answer 22

Periapical and bitewing techniques.

Question 23

True or False: Digital radiography requires the same processing steps as traditional film radiography.

Answer 23

False

Question 24

What is one advantage of digital radiography over film radiography?

Answer 24

Immediate image availability.

Question 25

What is the purpose of the control panel in an x-ray machine?

Answer 25

To set exposure parameters such as time and kilovoltage.

Question 26

Fill in the blank: The term 'radiation dose' refers to the amount of ______ received by a patient.

Answer 26

radiation

Question 27

What is the recommended maximum dose of radiation for dental patients per year?

Answer 27

0.1 Sievert (100 mSv).

Question 28

True or False: Radiographic images can be enhanced digitally after they are taken.

Answer 28

True

Question 29

What is the purpose of a darkroom in film processing?

Answer 29

To provide a light-tight environment for developing film.

Question 30

What is the role of a radiographic sensor in digital radiography?

Answer 30

To capture x-ray images electronically.

Question 31

What is the term for the visual representation of the internal structures of teeth and surrounding tissues?

Answer 31

Radiograph

Question 32

Fill in the blank: The ______ angle technique is used to obtain images of the maxillary molars.

Answer 32

maxillary

Question 33

What is one potential risk associated with repeated exposure to ionizing radiation?

Answer 33

Increased risk of cancer.

Question 34

True or False: All dental professionals are trained to minimize radiation exposure.

Answer 34

True

Question 35

What is the purpose of using a film holder during radiographic procedures?

Answer 35

To stabilize the film or sensor and ensure proper positioning.

Question 36

List the two main components of an x-ray machine.

Answer 36

The x-ray tube and the control panel.

Question 37

What does the term 'grid' refer to in radiography?

Answer 37

A device used to reduce scatter radiation and improve image quality.

Question 38

Fill in the blank: The ______ technique is used to capture images of the lower anterior teeth.

Answer 38

periapical

Question 39

What is the significance of the focal spot in an x-ray tube?

Answer 39

It is the area on the anode where x-rays are produced.

Question 40

True or False: Higher kilovoltage settings result in higher contrast images.

Answer 40

False

Question 41

What is the purpose of using a positioning device during radiographic procedures?

Answer 41

To ensure accurate alignment of the film or sensor with the x-ray beam.

Question 42

What type of radiation is primarily used in dental x-ray machines?

Answer 42

Ionizing radiation.

Question 43

What is the primary concern regarding radiation exposure for dental staff?

Answer 43

Occupational exposure leading to health risks.

Question 44

List one method of reducing radiation exposure for patients.

Answer 44

Using faster film or digital sensors.

Question 45

True or False: The ALARA principle stands for 'As Low As Reasonably Achievable.'

Answer 45

True

Question 46

What is the purpose of using a lead shield?

Answer 46

To protect against scatter radiation during x-ray procedures.

Question 47

Fill in the blank: The ______ effect refers to the biological damage caused by ionizing radiation.

Answer 47

stochastic

Question 48

What is a common symptom of acute radiation syndrome?

Answer 48

Nausea and vomiting.

Question 49

What is the role of the quality control in radiographic imaging?

Answer 49

To ensure consistent and high-quality images.

Question 50

True or False: Radiographic images can be used for both diagnostic and therapeutic purposes.

Answer 50

True

Question 51

What is the significance of the kilovoltage peak (kVp) in radiography?

Answer 51

It controls the energy and penetrating ability of the x-ray beam.

Question 52

What is the main purpose of using a film processing tank?

Answer 52

To hold the solutions used in developing radiographic film.

Question 53

Fill in the blank: Radiographic images should be stored in a ______ environment to prevent deterioration.

Answer 53

cool, dry

Question 54

What does the term 'image receptor' refer to?

Answer 54

Any device that captures the image produced by x-rays.

Question 55

What is an advantage of using digital radiography over traditional film?

Answer 55

Lower radiation dose.

Question 56

True or False: The term 'exposure' refers to the amount of radiation that reaches the image receptor.

Answer 56

True

Question 57

What is the importance of patient positioning during radiographic procedures?

Answer 57

It ensures the accuracy of the radiographic image.

Question 58

What is the purpose of the x-ray beam filter?

Answer 58

To remove low-energy x-rays that do not contribute to image quality.

Question 59

Fill in the blank: The ______ principle emphasizes minimizing radiation exposure to patients.

Answer 59

ALARA

Question 60

What is the role of a panoramic radiograph?

Answer 60

To capture a wide view of the teeth, jaws, and surrounding structures.

Question 61

What is the significance of the exposure time in radiography?

Answer 61

It affects the density and quality of the radiographic image.

Question 62

True or False: Digital images can be easily stored and transmitted compared to film images.

Answer 62

True

Question 63

What is the main disadvantage of traditional film radiography?

Answer 63

Longer processing time and need for darkroom.

Question 64

What does the term 'radiographic interpretation' refer to?

Answer 64

The ability to analyze and understand the information presented in radiographs.

Question 65

What is the purpose of using a contrast medium in certain radiographic examinations?

Answer 65

To enhance the visibility of specific structures.

Question 66

Fill in the blank: The ______ is the part of the x-ray machine that houses the x-ray tube.

Answer 66

tube head

Question 67

What is the main goal of radiographic examination?

Answer 67

To diagnose and monitor dental conditions.

Question 68

What is the standard procedure for handling radiographic film?

Answer 68

Always handle in a dark environment to avoid exposure to light.