Quiz Final Flashcards
What is the lingual foramen?
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.
True or False: Disto-oblique periapical radiographs are valuable in detecting impacted third molars.
True
Disto-oblique periapical radiographs use a tube shift to help image posterior objects like impacted third molars.
What is the advantage of a caries grading system?
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.’
Which radiographic feature is not added to an assessment of periodontal disease?
The length of a clinical crown.
Radiographs reveal root morphology and lengths, and the amount of supporting bone, but not the clinical crown length.
True or False: Bony outgrowths on the palate and lingual surfaces of the mandible are called ‘nodules.’
False
They are called ‘tori.’ Tori are commonly seen in the oral cavity.
True or False: Periapicals should be exposed using the paralleling technique to evaluate periodontal disease.
True
Ideal radiographs for imaging periodontal diseases are bitewings or periapical radiographs exposed by the paralleling technique.
Which mandibular teeth generally have the longest roots?
Canines.
Canine teeth have the longest roots compared to adjacent teeth.
True or False: Radiographs may be used to evaluate crestal bone and interdental septal changes.
True
The height of remaining bone is subtracted from the physiologic bone level to estimate bone loss.
True or False: Air spaces could compromise the diagnostic ability of the panoramic radiograph.
True
Radiolucencies produced by air spaces can obscure other structures.
True or False: Cortical bone varies in radiopacity according to the size and number of trabeculae.
False
Cortical (compact) bone is very dense and radiopaque.
True or False: Giving a child a job to do during radiographic procedures encourages participation.
True
This approach boosts cooperation by giving the child a sense of control.
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.
True
A 40 to 50 percent loss is required before decreased density can be seen on a radiograph.
True or False: Children have long attention spans, so a single instruction is sufficient.
False
A young child’s attention span can be short; repeated instructions are often necessary.
For caries to be imaged on a radiograph, what percentage of calcium and phosphorus must be lost?
40 to 50 percent.
The depth of caries penetration is clinically deeper than it appears on the radiograph.
Which dental materials may be observed within the pulp chamber and/or root canals?
Post and core, a silver point, gutta-percha.
An implant is not located in the pulp chamber.
Which statement is false regarding radiographs?
Radiographs assist with determining active versus arrested disease.
Radiographs cannot image soft tissue details, requiring clinical examination.
What classification is used for proximal caries at or through the dentinoenamel junction but less than halfway through the dentin?
C-3.
This classification is based on the grading system suggested by Haugejorden and Slack.
True or False: Foreign artifacts and radiographic artifacts are synonymous.
False
They must be differentiated; radiographs reveal foreign objects resulting from trauma.
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.
True
Moderate caries appear as a radiolucent triangle with the apex pointing toward the DEJ.
True or False: Radiographs document the amount of bone remaining rather than the amount lost.
True
The amount of bone loss is estimated from the physiologic bone level.
Which kVp setting produces the highest contrast between sound enamel and demineralization?
70 kVp.
A lower kVp setting yields a black-and-white image with few shades of gray.
The appearance of a fracture on panoramic images can be mistaken for which of the following?
Ghost image.
An outline of soft tissue may mimic the appearance of a fracture.
Which of the following is not a structure of the mandible?
Hamulus.
The hamulus is a process of bone extending from the sphenoid bone.
True or False: The exposure settings for the maxillary molar region should be higher than those used in the mandibular anterior region.
False
Bone structures are thinner in the mandibular incisor region.
Which describes the radiographic appearance of calculus?
Pointed projections, ringlike encircling, fuzzy speck.
Calculus may appear in various forms depending on density and amount.
True or False: A black film indicates accidental exposure to white light.
True
White light exposure will expose all silver halide crystals.
True or False: An amalgam overhang is a local contributing factor for periodontal disease.
False
Factors like amalgam overhangs can trap bacteria leading to periodontal diseases.
True or False: A panoramic radiograph is often selected to identify caries.
True
Panoramic radiographs may identify large caries but not early caries.
True or False: Dental radiographers should be trained in intervention strategies for patients with ASD.
True
Training should occur prior to treating patients with ASD.
True or False: Correct mounting and orientation is essential prior to reading dental radiographic images.
True
Proper mounting is crucial for accurate interpretation.
Which statement is correct about topographical occlusal radiographs?
They yield a greater amount of information in the alveolar crest and apical areas than periapical radiographs.
Topographical occlusal radiographs are used for larger areas than periapical radiographs.
What are topographical occlusal radiographs best used for?
To image conditions of the teeth and supporting structures when an area larger than that imaged by periapical radiographs is required
Topographical occlusal radiographs are suitable for larger areas.
True or False: All anatomical features recorded on intraoral radiographs are also recorded on panoramic images.
False
Not all anatomical features are captured in panoramic images.
Which method is most likely to assist in controlling a tactile stimulated gag response?
Direct the patient to press the back of the head against the headrest
This method helps stabilize the patient.
What is the term for a developmental anomaly where enamel invaginates within the body of the tooth?
Dens en dente
Mesiodens refers to an extra tooth, not this anomaly.
What are air spaces in the context of panoramic radiographs?
Regions of the skull where there is less bone or thin bony structures
They appear as areas of reduced density on the image.
True or False: Ghost images and negative shadows enhance the interpretation of panoramic images.
False
They can complicate the interpretation.
True or False: Panoramic images can possibly record cartilage and calcifications of ligaments located in the neck.
True
Which of the following requires a decrease in exposure settings? Children, older adults, edentulous regions, or mandibular incisor region?
Children
Older adults may not require decreased exposure unless edentulous.
Which statement is false regarding occlusal radiographs?
Cross-sectional occlusal radiographs of the mandible are taken with the occlusal plane perpendicular to the floor
This statement is incorrect as they are taken with the occlusal plane parallel.
True or False: The term ‘idiopathic resorption’ can apply to either external or internal resorption.
False
Idiopathic resorption refers to unknown causes of bone or tooth structure loss.
True or False: Vertical bone loss is the same diagnosis as angular bone loss.
True
They are often used interchangeably.
Which anatomical landmark is found in both the maxillary anterior and posterior regions of a panoramic radiograph?
Hard palate
Anomalies and pathologic lesions must be described by which characteristics?
Size, shape, border, architecture, location, and affect on surrounding tissues
All of these are critical for proper diagnosis.
What describes a benign pathologic lesion?
Well-defined border
Benign lesions typically grow slowly and are well-circumscribed.
True or False: A radiopaque appearance indicates tissue breakdown allowing more radiation to penetrate.
False
Radiopaque indicates denser tissue blocking radiation.
Which structure of the tooth appears the most radiopaque?
Enamel
Enamel is the most dense dental structure.
True or False: When imaging the mandibular arch, the printed side of the occlusal film packet will face the mandible.
False
The white side faces the mandible.
True or False: Patients with a large oral cavity and high palatal vault do not have a gag reflex.
False
All patients have a gag reflex regardless of anatomy.
True or False: A cyst is an epithelium-lined sac that appears radiolucent.
True
True or False: Radiographs can serve as a baseline for determining treatment success.
True
When should a child’s first professional oral examination occur according to the American Academy of Pediatric Dentistry?
Within 12 months following the eruption of the first primary tooth
This typically occurs between 6 and 12 months of age.
True or False: A cross-sectional occlusal radiograph will significantly distort the image of the teeth.
True
It produces a circular or elliptical appearance.
Which is not a reason to expose radiographs on an edentulous patient?
To determine the quality and condition of alveolar bone
This is often assessed through other means.
True or False: Evaluation of dental restorative materials is more likely to be conducted in conjunction with a clinical examination.
True
What does a clear or blank image indicate?
A full denture blocked the film from radiation
No radiation reaching the receptor results in a blank image.
Which of the following is not a cause of light images?
Developing in weak processing solutions
Weak processing solutions typically do not cause light images.
True or False: Occlusal radiographs can be placed and exposed in five regions of the oral cavity.
True
A vertical, 0-degree angulation is used for exposure of which occlusal radiograph?
Mandibular cross sectional
This angle is critical for proper imaging.
What describes a disease characterized by the loss of skeletal bone density?
Osteoporosis
The oblique ridge is most likely to be recorded on an intraoral radiograph of which region?
Mandibular posterior region
An image receptor placed too far back in the mouth will result in not imaging the?
Anterior structures
This placement leads to missing the front teeth.
True or False: Because the edentulous ridge is less dense, the amount of radiation needed to produce a diagnostic image is less.
True
Each of the following is a limitation of radiographs in the assessment of periodontal disease except one. Which one is the exception?
Two-dimensional images do not reveal infrabony changes
This is a known limitation of traditional radiography.
The amount of radiation needed to produce a diagnostic image is _______.
less
Dense areas require less radiation for diagnostic imaging.
Exposure settings for edentulous regions should be _______ than those required for an area where teeth are present.
slightly less
True or False: Radiographs can detect early signs of periodontal diseases.
F
A significant loss of bone density must occur before radiographic changes are detected.
True or False: Varying the horizontal angulation slightly may increase the chances of imaging interdental defects.
T
Cancellous bone appears _______ in radiopacity.
varies in radiopacity
True or False: The dentist must interpret panoramic images for deviations from normal anatomy.
T
True or False: Dense structures absorb x-rays and will appear dark on the radiograph.
F
Dense structures appear light or white on the radiograph.
Which statement about the gag reflex is incorrect?
The radiographer should let the patient place the image receptor in his or her own mouth to help control the gag reflex.
A qualified health physicist should examine the equipment for which of the following failed tests?
Darkroom safelight adequacy
Excessive vertical angulation in the paralleling technique will result in _______.
foreshortening of the teeth
True or False: Panoramic imaging causes broadening and flattening of the head and neck structures.
T
Which occlusal radiograph yields more information about the location of tori and impacted teeth?
Mandibular cross sectional
True or False: Changes in soft tissue can be demonstrated radiographically.
F
Gingivitis cannot be diagnosed radiographically because soft tissue is not imaged.
Which of the following describes a malignant pathologic lesion?
Poorly defined border
True or False: Some situations call for transferring the patient who uses a wheelchair to the dental chair for exposing radiographs.
T
Evidence of bone loss up to 15 percent indicates _______ periodontitis.
mild
To assist in developing cultural sensitivity, radiographers should consider a patient’s _______.
communication style, comfortable zones of territory, and nonverbal gestures
What size image receptor is used for occlusal radiographs on most adult patients?
Size 4
Which statement about radiographs is false?
Radiographs cannot detect early signs of periodontal diseases.
True or False: The power of suggestion can incite an unwanted gag reflex.
T
True or False: Air spaces appear with varying degrees of radiopacity on panoramic images.
F
Air spaces appear with varying degrees of radiolucency.
True or False: Some anatomical structures are more readily observed than others on panoramic images.
T
True or False: Amalgam tattoos are often found in edentulous areas of the mandibular arch.
T
Which of these statements regarding acceptable alterations of radiographic technique is false?
Position the image receptor perpendicular to the embrasures of the teeth of interest.
True or False: Bones are solid only on the outside and honeycombed within.
F
Cortical bone lines the outside layers, while cancellous bone forms the bulk inside.
True or False: Internal root resorption is characterized by root-end resorption where the roots appear shorter than normal.
T
If the patient’s head is rotated to the right in the focal trough, the teeth on the right appear _______.
diminished
True or False: The endodontic filling materials gutta-percha and silver points can be distinguished radiographically.
F
Which restorative material will appear the most radiopaque on a dental radiograph?
Post and core
True or False: A 16 inch PID should be used for the occlusal radiographic exam.
F
A shorter PID may be easier to position for steeper vertical angulations.
True or False: Keeping a log of retakes can help identify the radiographer who needs continuing education.
T
When interpreting dental radiographs for caries, evidence of proximal caries should be examined _______.
At and just apical to the gingival margin between adjacent teeth
Composite restorations can mimic _______.
decay
Which of the following bone types will appear the most radiopaque?
Cortical
True or False: Occlusal trauma can cause periodontal disease.
F
A traumatic occlusion does not cause periodontitis but can hinder the body’s response.
True or False: Occlusal trauma can cause periodontal disease.
False
A traumatic occlusion does not cause periodontitis but can hinder the body’s response to the disease.
True or False: To minimize a patient’s gag reflex, the radiographer can apply distraction techniques.
True
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.
Safety Data Sheets (SDS) list each of the following except which one?
The amount of product the practice can legally store
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.
Which statement is false regarding the patient with a visual impairment?
Use touch to demonstrate placement of the image receptor and feel of the receptor-holding device prior to its placement.
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.
Certain radiographic landmarks may or may not be recorded on intraoral dental radiographs because of all of the following except which one?
Type of image receptor used
The type of image receptor used will not have an impact on anatomical landmarks being recorded on dental radiographs.
True or False: Quality control calibrations are needed for computer monitors used to view digital images.
True
Quality control calibrations on the computer monitor used to view digital radiographic images will ensure proper resolution and gray scale.
