Quiz Final

Question 2

What is the lingual foramen?

Answer 2

A depression on the labial aspect of the mandibular incisor area, appearing as a generalized radiolucent area around the incisor apices.

The lingual foramen is often mistaken for other anatomical features.

Question 3

True or False: Disto-oblique periapical radiographs are valuable in detecting impacted third molars.

Answer 3

True

Disto-oblique periapical radiographs use a tube shift to help image posterior objects like impacted third molars.

Question 4

What is the advantage of a caries grading system?

Answer 4

It establishes a baseline to track the progression and/or remineralization of carious lesions at future appointments.

The grades may include ‘incipient,’ ‘moderate,’ ‘advanced,’ or ‘severe.’

Question 5

Which radiographic feature is not added to an assessment of periodontal disease?

Answer 5

The length of a clinical crown.

Radiographs reveal root morphology and lengths, and the amount of supporting bone, but not the clinical crown length.

Question 6

True or False: Bony outgrowths on the palate and lingual surfaces of the mandible are called ‘nodules.’

Answer 6

False

They are called ‘tori.’ Tori are commonly seen in the oral cavity.

Question 7

True or False: Periapicals should be exposed using the paralleling technique to evaluate periodontal disease.

Answer 7

True

Ideal radiographs for imaging periodontal diseases are bitewings or periapical radiographs exposed by the paralleling technique.

Question 8

Which mandibular teeth generally have the longest roots?

Answer 8

Canines.

Canine teeth have the longest roots compared to adjacent teeth.

Question 9

True or False: Radiographs may be used to evaluate crestal bone and interdental septal changes.

Answer 9

True

The height of remaining bone is subtracted from the physiologic bone level to estimate bone loss.

Question 10

True or False: Air spaces could compromise the diagnostic ability of the panoramic radiograph.

Answer 10

True

Radiolucencies produced by air spaces can obscure other structures.

Question 11

True or False: Cortical bone varies in radiopacity according to the size and number of trabeculae.

Answer 11

False

Cortical (compact) bone is very dense and radiopaque.

Question 12

True or False: Giving a child a job to do during radiographic procedures encourages participation.

Answer 12

True

This approach boosts cooperation by giving the child a sense of control.

Question 13

True or False: Dental caries must show a decrease in calcium and phosphorus of approximately 40 to 50 percent to be recorded on a radiograph.

Answer 13

True

A 40 to 50 percent loss is required before decreased density can be seen on a radiograph.

Question 14

True or False: Children have long attention spans, so a single instruction is sufficient.

Answer 14

False

A young child’s attention span can be short; repeated instructions are often necessary.

Question 15

For caries to be imaged on a radiograph, what percentage of calcium and phosphorus must be lost?

Answer 15

40 to 50 percent.

The depth of caries penetration is clinically deeper than it appears on the radiograph.

Question 16

Which dental materials may be observed within the pulp chamber and/or root canals?

Answer 16

Post and core, a silver point, gutta-percha.

An implant is not located in the pulp chamber.

Question 17

Which statement is false regarding radiographs?

Answer 17

Radiographs assist with determining active versus arrested disease.

Radiographs cannot image soft tissue details, requiring clinical examination.

Question 18

What classification is used for proximal caries at or through the dentinoenamel junction but less than halfway through the dentin?

Answer 18

C-3.

This classification is based on the grading system suggested by Haugejorden and Slack.

Question 19

True or False: Foreign artifacts and radiographic artifacts are synonymous.

Answer 19

False

They must be differentiated; radiographs reveal foreign objects resulting from trauma.

Question 20

True or False: Moderate caries is seen radiographically as a radiolucency that has penetrated at or through the DEJ but less than halfway through the dentin.

Answer 20

True

Moderate caries appear as a radiolucent triangle with the apex pointing toward the DEJ.

Question 21

True or False: Radiographs document the amount of bone remaining rather than the amount lost.

Answer 21

True

The amount of bone loss is estimated from the physiologic bone level.

Question 22

Which kVp setting produces the highest contrast between sound enamel and demineralization?

Answer 22

70 kVp.

A lower kVp setting yields a black-and-white image with few shades of gray.

Question 23

The appearance of a fracture on panoramic images can be mistaken for which of the following?

Answer 23

Ghost image.

An outline of soft tissue may mimic the appearance of a fracture.

Question 24

Which of the following is not a structure of the mandible?

Answer 24

Hamulus.

The hamulus is a process of bone extending from the sphenoid bone.

Question 25

True or False: The exposure settings for the maxillary molar region should be higher than those used in the mandibular anterior region.

Answer 25

False ## Footnote Bone structures are thinner in the mandibular incisor region.

Question 26

Which describes the radiographic appearance of calculus?

Answer 26

Pointed projections, ringlike encircling, fuzzy speck. ## Footnote Calculus may appear in various forms depending on density and amount.

Question 27

True or False: A black film indicates accidental exposure to white light.

Answer 27

True ## Footnote White light exposure will expose all silver halide crystals.

Question 28

True or False: An amalgam overhang is a local contributing factor for periodontal disease.

Answer 28

False ## Footnote Factors like amalgam overhangs can trap bacteria leading to periodontal diseases.

Question 29

True or False: A panoramic radiograph is often selected to identify caries.

Answer 29

True ## Footnote Panoramic radiographs may identify large caries but not early caries.

Question 30

True or False: Dental radiographers should be trained in intervention strategies for patients with ASD.

Answer 30

True ## Footnote Training should occur prior to treating patients with ASD.

Question 31

True or False: Correct mounting and orientation is essential prior to reading dental radiographic images.

Answer 31

True ## Footnote Proper mounting is crucial for accurate interpretation.

Question 32

Which statement is correct about topographical occlusal radiographs?

Answer 32

They yield a greater amount of information in the alveolar crest and apical areas than periapical radiographs. ## Footnote Topographical occlusal radiographs are used for larger areas than periapical radiographs.

Question 33

What are topographical occlusal radiographs best used for?

Answer 33

To image conditions of the teeth and supporting structures when an area larger than that imaged by periapical radiographs is required ## Footnote Topographical occlusal radiographs are suitable for larger areas.

Question 34

True or False: All anatomical features recorded on intraoral radiographs are also recorded on panoramic images.

Answer 34

False ## Footnote Not all anatomical features are captured in panoramic images.

Question 35

Which method is most likely to assist in controlling a tactile stimulated gag response?

Answer 35

Direct the patient to press the back of the head against the headrest ## Footnote This method helps stabilize the patient.

Question 36

What is the term for a developmental anomaly where enamel invaginates within the body of the tooth?

Answer 36

Dens en dente ## Footnote Mesiodens refers to an extra tooth, not this anomaly.

Question 37

What are air spaces in the context of panoramic radiographs?

Answer 37

Regions of the skull where there is less bone or thin bony structures ## Footnote They appear as areas of reduced density on the image.

Question 38

True or False: Ghost images and negative shadows enhance the interpretation of panoramic images.

Answer 38

False ## Footnote They can complicate the interpretation.

Question 39

True or False: Panoramic images can possibly record cartilage and calcifications of ligaments located in the neck.

Answer 39

True

Question 40

Which of the following requires a decrease in exposure settings? Children, older adults, edentulous regions, or mandibular incisor region?

Answer 40

Children ## Footnote Older adults may not require decreased exposure unless edentulous.

Question 41

Which statement is false regarding occlusal radiographs?

Answer 41

Cross-sectional occlusal radiographs of the mandible are taken with the occlusal plane perpendicular to the floor ## Footnote This statement is incorrect as they are taken with the occlusal plane parallel.

Question 42

True or False: The term 'idiopathic resorption' can apply to either external or internal resorption.

Answer 42

False ## Footnote Idiopathic resorption refers to unknown causes of bone or tooth structure loss.

Question 43

True or False: Vertical bone loss is the same diagnosis as angular bone loss.

Answer 43

True ## Footnote They are often used interchangeably.

Question 44

Which anatomical landmark is found in both the maxillary anterior and posterior regions of a panoramic radiograph?

Answer 44

Hard palate

Question 45

Anomalies and pathologic lesions must be described by which characteristics?

Answer 45

Size, shape, border, architecture, location, and affect on surrounding tissues ## Footnote All of these are critical for proper diagnosis.

Question 46

What describes a benign pathologic lesion?

Answer 46

Well-defined border ## Footnote Benign lesions typically grow slowly and are well-circumscribed.

Question 47

True or False: A radiopaque appearance indicates tissue breakdown allowing more radiation to penetrate.

Answer 47

False ## Footnote Radiopaque indicates denser tissue blocking radiation.

Question 48

Which structure of the tooth appears the most radiopaque?

Answer 48

Enamel ## Footnote Enamel is the most dense dental structure.

Question 49

True or False: When imaging the mandibular arch, the printed side of the occlusal film packet will face the mandible.

Answer 49

False ## Footnote The white side faces the mandible.

Question 50

True or False: Patients with a large oral cavity and high palatal vault do not have a gag reflex.

Answer 50

False ## Footnote All patients have a gag reflex regardless of anatomy.

Question 51

True or False: A cyst is an epithelium-lined sac that appears radiolucent.

Answer 51

True

Question 52

True or False: Radiographs can serve as a baseline for determining treatment success.

Answer 52

True

Question 53

When should a child's first professional oral examination occur according to the American Academy of Pediatric Dentistry?

Answer 53

Within 12 months following the eruption of the first primary tooth ## Footnote This typically occurs between 6 and 12 months of age.

Question 54

True or False: A cross-sectional occlusal radiograph will significantly distort the image of the teeth.

Answer 54

True ## Footnote It produces a circular or elliptical appearance.

Question 55

Which is not a reason to expose radiographs on an edentulous patient?

Answer 55

To determine the quality and condition of alveolar bone ## Footnote This is often assessed through other means.

Question 56

True or False: Evaluation of dental restorative materials is more likely to be conducted in conjunction with a clinical examination.

Answer 56

True

Question 57

What does a clear or blank image indicate?

Answer 57

A full denture blocked the film from radiation ## Footnote No radiation reaching the receptor results in a blank image.

Question 58

Which of the following is not a cause of light images?

Answer 58

Developing in weak processing solutions ## Footnote Weak processing solutions typically do not cause light images.

Question 59

True or False: Occlusal radiographs can be placed and exposed in five regions of the oral cavity.

Answer 59

True

Question 60

A vertical, 0-degree angulation is used for exposure of which occlusal radiograph?

Answer 60

Mandibular cross sectional ## Footnote This angle is critical for proper imaging.

Question 61

What describes a disease characterized by the loss of skeletal bone density?

Answer 61

Osteoporosis

Question 62

The oblique ridge is most likely to be recorded on an intraoral radiograph of which region?

Answer 62

Mandibular posterior region

Question 63

An image receptor placed too far back in the mouth will result in not imaging the?

Answer 63

Anterior structures ## Footnote This placement leads to missing the front teeth.

Question 64

True or False: Because the edentulous ridge is less dense, the amount of radiation needed to produce a diagnostic image is less.

Answer 64

True

Question 65

Each of the following is a limitation of radiographs in the assessment of periodontal disease except one. Which one is the exception?

Answer 65

Two-dimensional images do not reveal infrabony changes ## Footnote This is a known limitation of traditional radiography.

Question 66

The amount of radiation needed to produce a diagnostic image is _______.

Answer 66

less ## Footnote Dense areas require less radiation for diagnostic imaging.

Question 67

Exposure settings for edentulous regions should be _______ than those required for an area where teeth are present.

Answer 67

slightly less

Question 68

True or False: Radiographs can detect early signs of periodontal diseases.

Answer 68

F ## Footnote A significant loss of bone density must occur before radiographic changes are detected.

Question 69

True or False: Varying the horizontal angulation slightly may increase the chances of imaging interdental defects.

Answer 69

T

Question 70

Cancellous bone appears _______ in radiopacity.

Answer 70

varies in radiopacity

Question 71

True or False: The dentist must interpret panoramic images for deviations from normal anatomy.

Answer 71

T

Question 72

True or False: Dense structures absorb x-rays and will appear dark on the radiograph.

Answer 72

F ## Footnote Dense structures appear light or white on the radiograph.

Question 73

Which statement about the gag reflex is incorrect?

Answer 73

The radiographer should let the patient place the image receptor in his or her own mouth to help control the gag reflex.

Question 74

A qualified health physicist should examine the equipment for which of the following failed tests?

Answer 74

Darkroom safelight adequacy

Question 75

Excessive vertical angulation in the paralleling technique will result in _______.

Answer 75

foreshortening of the teeth

Question 76

True or False: Panoramic imaging causes broadening and flattening of the head and neck structures.

Answer 76

T

Question 77

Which occlusal radiograph yields more information about the location of tori and impacted teeth?

Answer 77

Mandibular cross sectional

Question 78

True or False: Changes in soft tissue can be demonstrated radiographically.

Answer 78

F ## Footnote Gingivitis cannot be diagnosed radiographically because soft tissue is not imaged.

Question 79

Which of the following describes a malignant pathologic lesion?

Answer 79

Poorly defined border

Question 80

True or False: Some situations call for transferring the patient who uses a wheelchair to the dental chair for exposing radiographs.

Answer 80

T

Question 81

Evidence of bone loss up to 15 percent indicates _______ periodontitis.

Answer 81

mild

Question 82

To assist in developing cultural sensitivity, radiographers should consider a patient's _______.

Answer 82

communication style, comfortable zones of territory, and nonverbal gestures

Question 83

What size image receptor is used for occlusal radiographs on most adult patients?

Answer 83

Size 4

Question 84

Which statement about radiographs is false?

Answer 84

Radiographs cannot detect early signs of periodontal diseases.

Question 85

True or False: The power of suggestion can incite an unwanted gag reflex.

Answer 85

T

Question 86

True or False: Air spaces appear with varying degrees of radiopacity on panoramic images.

Answer 86

F ## Footnote Air spaces appear with varying degrees of radiolucency.

Question 87

True or False: Some anatomical structures are more readily observed than others on panoramic images.

Answer 87

T

Question 88

True or False: Amalgam tattoos are often found in edentulous areas of the mandibular arch.

Answer 88

T

Question 89

Which of these statements regarding acceptable alterations of radiographic technique is false?

Answer 89

Position the image receptor perpendicular to the embrasures of the teeth of interest.

Question 90

True or False: Bones are solid only on the outside and honeycombed within.

Answer 90

F ## Footnote Cortical bone lines the outside layers, while cancellous bone forms the bulk inside.

Question 91

True or False: Internal root resorption is characterized by root-end resorption where the roots appear shorter than normal.

Answer 91

T

Question 92

If the patient's head is rotated to the right in the focal trough, the teeth on the right appear _______.

Answer 92

diminished

Question 93

True or False: The endodontic filling materials gutta-percha and silver points can be distinguished radiographically.

Answer 93

F

Question 94

Which restorative material will appear the most radiopaque on a dental radiograph?

Answer 94

Post and core

Question 95

True or False: A 16 inch PID should be used for the occlusal radiographic exam.

Answer 95

F ## Footnote A shorter PID may be easier to position for steeper vertical angulations.

Question 96

True or False: Keeping a log of retakes can help identify the radiographer who needs continuing education.

Answer 96

T

Question 97

When interpreting dental radiographs for caries, evidence of proximal caries should be examined _______.

Answer 97

At and just apical to the gingival margin between adjacent teeth

Question 98

Composite restorations can mimic _______.

Answer 98

decay

Question 99

Which of the following bone types will appear the most radiopaque?

Answer 99

Cortical

Question 100

True or False: Occlusal trauma can cause periodontal disease.

Answer 100

F ## Footnote A traumatic occlusion does not cause periodontitis but can hinder the body's response.

Question 101

True or False: Occlusal trauma can cause periodontal disease.

Answer 101

False ## Footnote A traumatic occlusion does not cause periodontitis but can hinder the body's response to the disease.

Question 102

True or False: To minimize a patient's gag reflex, the radiographer can apply distraction techniques.

Answer 102

True ## Footnote Maintaining an engaging dialogue, asking the patient to think of a favorite vacation, or providing a distraction task for the patient to perform often minimizes the gag reflex.

Question 103

Safety Data Sheets (SDS) list each of the following except which one?

Answer 103

The amount of product the practice can legally store ## Footnote Safety Data Sheets (SDS) provide documentation regarding the properties and potential health effects of the product but do not regulate or limit the amount of products that may be purchased or stored by the practice or facility.

Question 104

Which statement is false regarding the patient with a visual impairment?

Answer 104

Use touch to demonstrate placement of the image receptor and feel of the receptor-holding device prior to its placement. ## Footnote Personal eyewear worn by a patient with a visual impairment may have to be temporarily removed if it is determined that the eyewear will be positioned within the path of the primary beam.

Question 105

Certain radiographic landmarks may or may not be recorded on intraoral dental radiographs because of all of the following except which one?

Answer 105

Type of image receptor used ## Footnote The type of image receptor used will not have an impact on anatomical landmarks being recorded on dental radiographs.

Question 106

True or False: Quality control calibrations are needed for computer monitors used to view digital images.

Answer 106

True ## Footnote Quality control calibrations on the computer monitor used to view digital radiographic images will ensure proper resolution and gray scale.