RHS Exam Prep With Verified Answers Graded A+
periapical - -radiographic image showing the crown, root tip, & surrounding
structures
Page | 1
periapical radiographs used to detect: - -any abnormalities of the root structure &
surrounding bone structure
Bitewing radiograph - -image view showing the crowns of both arches on one film
bitewing radiographs used to detect: - -or monitor interproximal caries if the
proximal surfaces of the teeth cannot be visually tactilely examined
full mouth series radiograph - -is composed of a series of individual images,
including a combination of bitewing & periapical
purpose of full mouth series: - -as a baseline on the health of your mouth
Occlusal radiograph - -image that shows large areas of the maxilla or mandible
Occlusal radiograph purpose: - -help track the development & placement of a
section or entire arch of teeth in the upper or lower jaw
panoramic radiograph - -provides full view of the upper & lower jaw
panoramic radiograph purpose - -allows us view your head, neck, & jaw, & how they
work together as a whole
, Cephalometric radiograph - -extraoral radiograph of the bones & tissues of the head
Page | 2
Cephalometric radiograph purpose - -enables the dentist to capture a complete
radiographic image of the side of the face
CBCT (cone beam computed tomography) - -three dimensional digital imaging
method that uses a cone-shaped beam of radiation that rotates around the patient
CBCT (cone beam computed tomography) purpose - -allows accurate, three
dimensional (3D) imaging of hard tissue structures
Radiolucent - -- portion of an image that is dark or black;
- the passage of x-rays w/relatively little attenuation by absorption
Radiopaque - -- portion of an image that appears light or white
- strongly inhibiting the passage of x-rays
Phosphor plates are processed by using: - -laser beam technology
Most bilateral findings in images are considered: - -normal anatomic landmarks
Impacted third molars are best seen w/what type of radiograph? - -Panoramic
, Which of the following is automatically labeled on the computer template for an image? -
-Date of image
Page | 3 The main purpose of using a lead apron w/a thyroid collar when exposing dental
radiographs is to protect the patient from: - -scatter radiation
For x-ray machines operating in ranges at or below 70 kVp, the total aluminum equivalent
filtration must be a minimum of: - -1.5 mm
Foreshortening of the maxillary radiographic image results from: - -increased vertical
angulation
After a patient has been dismissed, dental unit surfaces & counter tops that may have been
contaminated should be cleaned w/an EPA-registered: - -intermediate-level
disinfectant
Dilaceration in a radiographic image indicates the: - -root shape is abnormally bent
or curved
Somatic effects of radiation do NOT have damaging effects on: - -offspring
Which of the following will best protect the dental assistant from cross-contamination
while exposing radiographs? - -Gloves
The time between patient exposure to radiation & the appearance of biological damage is
the: - -latent period
periapical - -radiographic image showing the crown, root tip, & surrounding
structures
Page | 1
periapical radiographs used to detect: - -any abnormalities of the root structure &
surrounding bone structure
Bitewing radiograph - -image view showing the crowns of both arches on one film
bitewing radiographs used to detect: - -or monitor interproximal caries if the
proximal surfaces of the teeth cannot be visually tactilely examined
full mouth series radiograph - -is composed of a series of individual images,
including a combination of bitewing & periapical
purpose of full mouth series: - -as a baseline on the health of your mouth
Occlusal radiograph - -image that shows large areas of the maxilla or mandible
Occlusal radiograph purpose: - -help track the development & placement of a
section or entire arch of teeth in the upper or lower jaw
panoramic radiograph - -provides full view of the upper & lower jaw
panoramic radiograph purpose - -allows us view your head, neck, & jaw, & how they
work together as a whole
, Cephalometric radiograph - -extraoral radiograph of the bones & tissues of the head
Page | 2
Cephalometric radiograph purpose - -enables the dentist to capture a complete
radiographic image of the side of the face
CBCT (cone beam computed tomography) - -three dimensional digital imaging
method that uses a cone-shaped beam of radiation that rotates around the patient
CBCT (cone beam computed tomography) purpose - -allows accurate, three
dimensional (3D) imaging of hard tissue structures
Radiolucent - -- portion of an image that is dark or black;
- the passage of x-rays w/relatively little attenuation by absorption
Radiopaque - -- portion of an image that appears light or white
- strongly inhibiting the passage of x-rays
Phosphor plates are processed by using: - -laser beam technology
Most bilateral findings in images are considered: - -normal anatomic landmarks
Impacted third molars are best seen w/what type of radiograph? - -Panoramic
, Which of the following is automatically labeled on the computer template for an image? -
-Date of image
Page | 3 The main purpose of using a lead apron w/a thyroid collar when exposing dental
radiographs is to protect the patient from: - -scatter radiation
For x-ray machines operating in ranges at or below 70 kVp, the total aluminum equivalent
filtration must be a minimum of: - -1.5 mm
Foreshortening of the maxillary radiographic image results from: - -increased vertical
angulation
After a patient has been dismissed, dental unit surfaces & counter tops that may have been
contaminated should be cleaned w/an EPA-registered: - -intermediate-level
disinfectant
Dilaceration in a radiographic image indicates the: - -root shape is abnormally bent
or curved
Somatic effects of radiation do NOT have damaging effects on: - -offspring
Which of the following will best protect the dental assistant from cross-contamination
while exposing radiographs? - -Gloves
The time between patient exposure to radiation & the appearance of biological damage is
the: - -latent period
